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freebsd-skq/contrib/gcc/real.c

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Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* real.c - software floating point emulation.
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999,
2000, 2002, 2003, 2004 Free Software Foundation, Inc.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Contributed by Stephen L. Moshier (moshier@world.std.com).
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Re-written by Richard Henderson <rth@redhat.com>
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
This file is part of GCC.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
for more details.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#include "config.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "system.h"
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
#include "coretypes.h"
#include "tm.h"
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#include "tree.h"
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#include "toplev.h"
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
#include "real.h"
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
#include "tm_p.h"
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* The floating point model used internally is not exactly IEEE 754
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
compliant, and close to the description in the ISO C99 standard,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
section 5.2.4.2.2 Characteristics of floating types.
Specifically
x = s * b^e * \sum_{k=1}^p f_k * b^{-k}
where
s = sign (+- 1)
b = base or radix, here always 2
e = exponent
p = precision (the number of base-b digits in the significand)
f_k = the digits of the significand.
We differ from typical IEEE 754 encodings in that the entire
significand is fractional. Normalized significands are in the
range [0.5, 1.0).
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
A requirement of the model is that P be larger than the largest
supported target floating-point type by at least 2 bits. This gives
us proper rounding when we truncate to the target type. In addition,
E must be large enough to hold the smallest supported denormal number
in a normalized form.
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Both of these requirements are easily satisfied. The largest target
significand is 113 bits; we store at least 160. The smallest
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
denormal number fits in 17 exponent bits; we store 27.
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Note that the decimal string conversion routines are sensitive to
rounding errors. Since the raw arithmetic routines do not themselves
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
have guard digits or rounding, the computation of 10**exp can
accumulate more than a few digits of error. The previous incarnation
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
of real.c successfully used a 144-bit fraction; given the current
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
layout of REAL_VALUE_TYPE we're forced to expand to at least 160 bits.
Target floating point models that use base 16 instead of base 2
(i.e. IBM 370), are handled during round_for_format, in which we
canonicalize the exponent to be a multiple of 4 (log2(16)), and
adjust the significand to match. */
/* Used to classify two numbers simultaneously. */
#define CLASS2(A, B) ((A) << 2 | (B))
#if HOST_BITS_PER_LONG != 64 && HOST_BITS_PER_LONG != 32
#error "Some constant folding done by hand to avoid shift count warnings"
#endif
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void get_zero (REAL_VALUE_TYPE *, int);
static void get_canonical_qnan (REAL_VALUE_TYPE *, int);
static void get_canonical_snan (REAL_VALUE_TYPE *, int);
static void get_inf (REAL_VALUE_TYPE *, int);
static bool sticky_rshift_significand (REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *, unsigned int);
static void rshift_significand (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *,
unsigned int);
static void lshift_significand (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *,
unsigned int);
static void lshift_significand_1 (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
static bool add_significands (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *);
static bool sub_significands (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *, int);
static void neg_significand (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
static int cmp_significands (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
static int cmp_significand_0 (const REAL_VALUE_TYPE *);
static void set_significand_bit (REAL_VALUE_TYPE *, unsigned int);
static void clear_significand_bit (REAL_VALUE_TYPE *, unsigned int);
static bool test_significand_bit (REAL_VALUE_TYPE *, unsigned int);
static void clear_significand_below (REAL_VALUE_TYPE *, unsigned int);
static bool div_significands (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *);
static void normalize (REAL_VALUE_TYPE *);
static bool do_add (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *, int);
static bool do_multiply (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *);
static bool do_divide (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *,
const REAL_VALUE_TYPE *);
static int do_compare (const REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *, int);
static void do_fix_trunc (REAL_VALUE_TYPE *, const REAL_VALUE_TYPE *);
static unsigned long rtd_divmod (REAL_VALUE_TYPE *, REAL_VALUE_TYPE *);
static const REAL_VALUE_TYPE * ten_to_ptwo (int);
static const REAL_VALUE_TYPE * ten_to_mptwo (int);
static const REAL_VALUE_TYPE * real_digit (int);
static void times_pten (REAL_VALUE_TYPE *, int);
static void round_for_format (const struct real_format *, REAL_VALUE_TYPE *);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Initialize R with a positive zero. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
get_zero (REAL_VALUE_TYPE *r, int sign)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
memset (r, 0, sizeof (*r));
r->sign = sign;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Initialize R with the canonical quiet NaN. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
get_canonical_qnan (REAL_VALUE_TYPE *r, int sign)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
memset (r, 0, sizeof (*r));
r->class = rvc_nan;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
r->canonical = 1;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
get_canonical_snan (REAL_VALUE_TYPE *r, int sign)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
memset (r, 0, sizeof (*r));
r->class = rvc_nan;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
r->signalling = 1;
r->canonical = 1;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
get_inf (REAL_VALUE_TYPE *r, int sign)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
memset (r, 0, sizeof (*r));
r->class = rvc_inf;
r->sign = sign;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Right-shift the significand of A by N bits; put the result in the
significand of R. If any one bits are shifted out, return true. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
sticky_rshift_significand (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
unsigned int n)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long sticky = 0;
unsigned int i, ofs = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (n >= HOST_BITS_PER_LONG)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0, ofs = n / HOST_BITS_PER_LONG; i < ofs; ++i)
sticky |= a->sig[i];
n &= HOST_BITS_PER_LONG - 1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (n != 0)
{
sticky |= a->sig[ofs] & (((unsigned long)1 << n) - 1);
for (i = 0; i < SIGSZ; ++i)
{
r->sig[i]
= (((ofs + i >= SIGSZ ? 0 : a->sig[ofs + i]) >> n)
| ((ofs + i + 1 >= SIGSZ ? 0 : a->sig[ofs + i + 1])
<< (HOST_BITS_PER_LONG - n)));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
else
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; ofs + i < SIGSZ; ++i)
r->sig[i] = a->sig[ofs + i];
for (; i < SIGSZ; ++i)
r->sig[i] = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return sticky != 0;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Right-shift the significand of A by N bits; put the result in the
significand of R. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
rshift_significand (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
unsigned int n)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned int i, ofs = n / HOST_BITS_PER_LONG;
n &= HOST_BITS_PER_LONG - 1;
if (n != 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; i < SIGSZ; ++i)
{
r->sig[i]
= (((ofs + i >= SIGSZ ? 0 : a->sig[ofs + i]) >> n)
| ((ofs + i + 1 >= SIGSZ ? 0 : a->sig[ofs + i + 1])
<< (HOST_BITS_PER_LONG - n)));
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; ofs + i < SIGSZ; ++i)
r->sig[i] = a->sig[ofs + i];
for (; i < SIGSZ; ++i)
r->sig[i] = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Left-shift the significand of A by N bits; put the result in the
significand of R. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
lshift_significand (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
unsigned int n)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned int i, ofs = n / HOST_BITS_PER_LONG;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
n &= HOST_BITS_PER_LONG - 1;
if (n == 0)
{
for (i = 0; ofs + i < SIGSZ; ++i)
r->sig[SIGSZ-1-i] = a->sig[SIGSZ-1-i-ofs];
for (; i < SIGSZ; ++i)
r->sig[SIGSZ-1-i] = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
for (i = 0; i < SIGSZ; ++i)
{
r->sig[SIGSZ-1-i]
= (((ofs + i >= SIGSZ ? 0 : a->sig[SIGSZ-1-i-ofs]) << n)
| ((ofs + i + 1 >= SIGSZ ? 0 : a->sig[SIGSZ-1-i-ofs-1])
>> (HOST_BITS_PER_LONG - n)));
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Likewise, but N is specialized to 1. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
lshift_significand_1 (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = SIGSZ - 1; i > 0; --i)
r->sig[i] = (a->sig[i] << 1) | (a->sig[i-1] >> (HOST_BITS_PER_LONG - 1));
r->sig[0] = a->sig[0] << 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Add the significands of A and B, placing the result in R. Return
true if there was carry out of the most significant word. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
add_significands (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
const REAL_VALUE_TYPE *b)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool carry = false;
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; i < SIGSZ; ++i)
{
unsigned long ai = a->sig[i];
unsigned long ri = ai + b->sig[i];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (carry)
{
carry = ri < ai;
carry |= ++ri == 0;
}
else
carry = ri < ai;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[i] = ri;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return carry;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Subtract the significands of A and B, placing the result in R. CARRY is
true if there's a borrow incoming to the least significant word.
Return true if there was borrow out of the most significant word. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
sub_significands (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
const REAL_VALUE_TYPE *b, int carry)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
int i;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; i < SIGSZ; ++i)
{
unsigned long ai = a->sig[i];
unsigned long ri = ai - b->sig[i];
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (carry)
{
carry = ri > ai;
carry |= ~--ri == 0;
}
else
carry = ri > ai;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[i] = ri;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return carry;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Negate the significand A, placing the result in R. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
neg_significand (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool carry = true;
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; i < SIGSZ; ++i)
{
unsigned long ri, ai = a->sig[i];
if (carry)
{
if (ai)
{
ri = -ai;
carry = false;
}
else
ri = ai;
}
else
ri = ~ai;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[i] = ri;
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Compare significands. Return tri-state vs zero. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static inline int
cmp_significands (const REAL_VALUE_TYPE *a, const REAL_VALUE_TYPE *b)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = SIGSZ - 1; i >= 0; --i)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long ai = a->sig[i];
unsigned long bi = b->sig[i];
if (ai > bi)
return 1;
if (ai < bi)
return -1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Return true if A is nonzero. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static inline int
cmp_significand_0 (const REAL_VALUE_TYPE *a)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = SIGSZ - 1; i >= 0; --i)
if (a->sig[i])
return 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return 0;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Set bit N of the significand of R. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
set_significand_bit (REAL_VALUE_TYPE *r, unsigned int n)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[n / HOST_BITS_PER_LONG]
|= (unsigned long)1 << (n % HOST_BITS_PER_LONG);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Clear bit N of the significand of R. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
clear_significand_bit (REAL_VALUE_TYPE *r, unsigned int n)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
r->sig[n / HOST_BITS_PER_LONG]
&= ~((unsigned long)1 << (n % HOST_BITS_PER_LONG));
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Test bit N of the significand of R. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
test_significand_bit (REAL_VALUE_TYPE *r, unsigned int n)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
/* ??? Compiler bug here if we return this expression directly.
The conversion to bool strips the "&1" and we wind up testing
e.g. 2 != 0 -> true. Seen in gcc version 3.2 20020520. */
int t = (r->sig[n / HOST_BITS_PER_LONG] >> (n % HOST_BITS_PER_LONG)) & 1;
return t;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Clear bits 0..N-1 of the significand of R. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
clear_significand_below (REAL_VALUE_TYPE *r, unsigned int n)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
int i, w = n / HOST_BITS_PER_LONG;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; i < w; ++i)
r->sig[i] = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[w] &= ~(((unsigned long)1 << (n % HOST_BITS_PER_LONG)) - 1);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Divide the significands of A and B, placing the result in R. Return
true if the division was inexact. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static inline bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
div_significands (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
const REAL_VALUE_TYPE *b)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE u;
int i, bit = SIGNIFICAND_BITS - 1;
unsigned long msb, inexact;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
u = *a;
memset (r->sig, 0, sizeof (r->sig));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
msb = 0;
goto start;
do
{
msb = u.sig[SIGSZ-1] & SIG_MSB;
lshift_significand_1 (&u, &u);
start:
if (msb || cmp_significands (&u, b) >= 0)
{
sub_significands (&u, &u, b, 0);
set_significand_bit (r, bit);
}
}
while (--bit >= 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0, inexact = 0; i < SIGSZ; i++)
inexact |= u.sig[i];
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return inexact != 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Adjust the exponent and significand of R such that the most
significant bit is set. We underflow to zero and overflow to
infinity here, without denormals. (The intermediate representation
exponent is large enough to handle target denormals normalized.) */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
normalize (REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int shift = 0, exp;
int i, j;
/* Find the first word that is nonzero. */
for (i = SIGSZ - 1; i >= 0; i--)
if (r->sig[i] == 0)
shift += HOST_BITS_PER_LONG;
else
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Zero significand flushes to zero. */
if (i < 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_zero;
r->exp = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return;
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Find the first bit that is nonzero. */
for (j = 0; ; j++)
if (r->sig[i] & ((unsigned long)1 << (HOST_BITS_PER_LONG - 1 - j)))
break;
shift += j;
if (shift > 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp = r->exp - shift;
if (exp > MAX_EXP)
get_inf (r, r->sign);
else if (exp < -MAX_EXP)
get_zero (r, r->sign);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
r->exp = exp;
lshift_significand (r, r, shift);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Calculate R = A + (SUBTRACT_P ? -B : B). Return true if the
result may be inexact due to a loss of precision. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static bool
do_add (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
const REAL_VALUE_TYPE *b, int subtract_p)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int dexp, sign, exp;
REAL_VALUE_TYPE t;
bool inexact = false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Determine if we need to add or subtract. */
sign = a->sign;
subtract_p = (sign ^ b->sign) ^ subtract_p;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (CLASS2 (a->class, b->class))
{
case CLASS2 (rvc_zero, rvc_zero):
/* -0 + -0 = -0, -0 - +0 = -0; all other cases yield +0. */
get_zero (r, sign & !subtract_p);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_normal):
case CLASS2 (rvc_zero, rvc_inf):
case CLASS2 (rvc_zero, rvc_nan):
/* 0 + ANY = ANY. */
case CLASS2 (rvc_normal, rvc_nan):
case CLASS2 (rvc_inf, rvc_nan):
case CLASS2 (rvc_nan, rvc_nan):
/* ANY + NaN = NaN. */
case CLASS2 (rvc_normal, rvc_inf):
/* R + Inf = Inf. */
*r = *b;
r->sign = sign ^ subtract_p;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_normal, rvc_zero):
case CLASS2 (rvc_inf, rvc_zero):
case CLASS2 (rvc_nan, rvc_zero):
/* ANY + 0 = ANY. */
case CLASS2 (rvc_nan, rvc_normal):
case CLASS2 (rvc_nan, rvc_inf):
/* NaN + ANY = NaN. */
case CLASS2 (rvc_inf, rvc_normal):
/* Inf + R = Inf. */
*r = *a;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_inf, rvc_inf):
if (subtract_p)
/* Inf - Inf = NaN. */
get_canonical_qnan (r, 0);
else
/* Inf + Inf = Inf. */
*r = *a;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_normal, rvc_normal):
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Swap the arguments such that A has the larger exponent. */
dexp = a->exp - b->exp;
if (dexp < 0)
{
const REAL_VALUE_TYPE *t;
t = a, a = b, b = t;
dexp = -dexp;
sign ^= subtract_p;
}
exp = a->exp;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* If the exponents are not identical, we need to shift the
significand of B down. */
if (dexp > 0)
{
/* If the exponents are too far apart, the significands
do not overlap, which makes the subtraction a noop. */
if (dexp >= SIGNIFICAND_BITS)
{
*r = *a;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return true;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
}
inexact |= sticky_rshift_significand (&t, b, dexp);
b = &t;
}
if (subtract_p)
{
if (sub_significands (r, a, b, inexact))
{
/* We got a borrow out of the subtraction. That means that
A and B had the same exponent, and B had the larger
significand. We need to swap the sign and negate the
significand. */
sign ^= 1;
neg_significand (r, r);
}
}
else
{
if (add_significands (r, a, b))
{
/* We got carry out of the addition. This means we need to
shift the significand back down one bit and increase the
exponent. */
inexact |= sticky_rshift_significand (r, r, 1);
r->sig[SIGSZ-1] |= SIG_MSB;
if (++exp > MAX_EXP)
{
get_inf (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return true;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
}
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
r->exp = exp;
Gcc 3.4.4 release.
2005-06-03 03:28:44 +00:00
/* Zero out the remaining fields. */
r->signalling = 0;
r->canonical = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Re-normalize the result. */
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Special case: if the subtraction results in zero, the result
is positive. */
if (r->class == rvc_zero)
r->sign = 0;
else
r->sig[0] |= inexact;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return inexact;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Calculate R = A * B. Return true if the result may be inexact. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static bool
do_multiply (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
const REAL_VALUE_TYPE *b)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE u, t, *rr;
unsigned int i, j, k;
int sign = a->sign ^ b->sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
bool inexact = false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (CLASS2 (a->class, b->class))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_zero):
case CLASS2 (rvc_zero, rvc_normal):
case CLASS2 (rvc_normal, rvc_zero):
/* +-0 * ANY = 0 with appropriate sign. */
get_zero (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_nan):
case CLASS2 (rvc_normal, rvc_nan):
case CLASS2 (rvc_inf, rvc_nan):
case CLASS2 (rvc_nan, rvc_nan):
/* ANY * NaN = NaN. */
*r = *b;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_nan, rvc_zero):
case CLASS2 (rvc_nan, rvc_normal):
case CLASS2 (rvc_nan, rvc_inf):
/* NaN * ANY = NaN. */
*r = *a;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_inf):
case CLASS2 (rvc_inf, rvc_zero):
/* 0 * Inf = NaN */
get_canonical_qnan (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_inf, rvc_inf):
case CLASS2 (rvc_normal, rvc_inf):
case CLASS2 (rvc_inf, rvc_normal):
/* Inf * Inf = Inf, R * Inf = Inf */
get_inf (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_normal, rvc_normal):
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
default:
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (r == a || r == b)
rr = &t;
else
rr = r;
get_zero (rr, 0);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Collect all the partial products. Since we don't have sure access
to a widening multiply, we split each long into two half-words.
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Consider the long-hand form of a four half-word multiplication:
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
A B C D
* E F G H
--------------
DE DF DG DH
CE CF CG CH
BE BF BG BH
AE AF AG AH
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
We construct partial products of the widened half-word products
that are known to not overlap, e.g. DF+DH. Each such partial
product is given its proper exponent, which allows us to sum them
and obtain the finished product. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; i < SIGSZ * 2; ++i)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long ai = a->sig[i / 2];
if (i & 1)
ai >>= HOST_BITS_PER_LONG / 2;
else
ai &= ((unsigned long)1 << (HOST_BITS_PER_LONG / 2)) - 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (ai == 0)
continue;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (j = 0; j < 2; ++j)
{
int exp = (a->exp - (2*SIGSZ-1-i)*(HOST_BITS_PER_LONG/2)
+ (b->exp - (1-j)*(HOST_BITS_PER_LONG/2)));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp > MAX_EXP)
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
{
get_inf (r, sign);
return true;
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp < -MAX_EXP)
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
{
/* Would underflow to zero, which we shouldn't bother adding. */
inexact = true;
continue;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
memset (&u, 0, sizeof (u));
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
u.class = rvc_normal;
u.exp = exp;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (k = j; k < SIGSZ * 2; k += 2)
{
unsigned long bi = b->sig[k / 2];
if (k & 1)
bi >>= HOST_BITS_PER_LONG / 2;
else
bi &= ((unsigned long)1 << (HOST_BITS_PER_LONG / 2)) - 1;
u.sig[k / 2] = ai * bi;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
normalize (&u);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
inexact |= do_add (rr, rr, &u, 0);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
}
}
rr->sign = sign;
if (rr != r)
*r = t;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return inexact;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Calculate R = A / B. Return true if the result may be inexact. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static bool
do_divide (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a,
const REAL_VALUE_TYPE *b)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int exp, sign = a->sign ^ b->sign;
REAL_VALUE_TYPE t, *rr;
bool inexact;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (CLASS2 (a->class, b->class))
{
case CLASS2 (rvc_zero, rvc_zero):
/* 0 / 0 = NaN. */
case CLASS2 (rvc_inf, rvc_inf):
/* Inf / Inf = NaN. */
get_canonical_qnan (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_normal):
case CLASS2 (rvc_zero, rvc_inf):
/* 0 / ANY = 0. */
case CLASS2 (rvc_normal, rvc_inf):
/* R / Inf = 0. */
get_zero (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_normal, rvc_zero):
/* R / 0 = Inf. */
case CLASS2 (rvc_inf, rvc_zero):
/* Inf / 0 = Inf. */
get_inf (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_nan):
case CLASS2 (rvc_normal, rvc_nan):
case CLASS2 (rvc_inf, rvc_nan):
case CLASS2 (rvc_nan, rvc_nan):
/* ANY / NaN = NaN. */
*r = *b;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_nan, rvc_zero):
case CLASS2 (rvc_nan, rvc_normal):
case CLASS2 (rvc_nan, rvc_inf):
/* NaN / ANY = NaN. */
*r = *a;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_inf, rvc_normal):
/* Inf / R = Inf. */
get_inf (r, sign);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_normal, rvc_normal):
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (r == a || r == b)
rr = &t;
else
rr = r;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Make sure all fields in the result are initialized. */
get_zero (rr, 0);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
rr->class = rvc_normal;
rr->sign = sign;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp = a->exp - b->exp + 1;
if (exp > MAX_EXP)
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
{
get_inf (r, sign);
return true;
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp < -MAX_EXP)
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
{
get_zero (r, sign);
return true;
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
rr->exp = exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
inexact = div_significands (rr, a, b);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Re-normalize the result. */
normalize (rr);
rr->sig[0] |= inexact;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (rr != r)
*r = t;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return inexact;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Return a tri-state comparison of A vs B. Return NAN_RESULT if
one of the two operands is a NaN. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static int
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
do_compare (const REAL_VALUE_TYPE *a, const REAL_VALUE_TYPE *b,
int nan_result)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int ret;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (CLASS2 (a->class, b->class))
{
case CLASS2 (rvc_zero, rvc_zero):
/* Sign of zero doesn't matter for compares. */
return 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_inf, rvc_zero):
case CLASS2 (rvc_inf, rvc_normal):
case CLASS2 (rvc_normal, rvc_zero):
return (a->sign ? -1 : 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_inf, rvc_inf):
return -a->sign - -b->sign;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_normal):
case CLASS2 (rvc_zero, rvc_inf):
case CLASS2 (rvc_normal, rvc_inf):
return (b->sign ? 1 : -1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_zero, rvc_nan):
case CLASS2 (rvc_normal, rvc_nan):
case CLASS2 (rvc_inf, rvc_nan):
case CLASS2 (rvc_nan, rvc_nan):
case CLASS2 (rvc_nan, rvc_zero):
case CLASS2 (rvc_nan, rvc_normal):
case CLASS2 (rvc_nan, rvc_inf):
return nan_result;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case CLASS2 (rvc_normal, rvc_normal):
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (a->sign != b->sign)
return -a->sign - -b->sign;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (a->exp > b->exp)
ret = 1;
else if (a->exp < b->exp)
ret = -1;
else
ret = cmp_significands (a, b);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return (a->sign ? -ret : ret);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Return A truncated to an integral value toward zero. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
do_fix_trunc (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *a)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
*r = *a;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
{
case rvc_zero:
case rvc_inf:
case rvc_nan:
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
if (r->exp <= 0)
get_zero (r, r->sign);
else if (r->exp < SIGNIFICAND_BITS)
clear_significand_below (r, SIGNIFICAND_BITS - r->exp);
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Perform the binary or unary operation described by CODE.
For a unary operation, leave OP1 NULL. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_arithmetic (REAL_VALUE_TYPE *r, int icode, const REAL_VALUE_TYPE *op0,
const REAL_VALUE_TYPE *op1)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
enum tree_code code = icode;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (code)
{
case PLUS_EXPR:
do_add (r, op0, op1, 0);
break;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case MINUS_EXPR:
do_add (r, op0, op1, 1);
break;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case MULT_EXPR:
do_multiply (r, op0, op1);
break;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case RDIV_EXPR:
do_divide (r, op0, op1);
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case MIN_EXPR:
if (op1->class == rvc_nan)
*r = *op1;
else if (do_compare (op0, op1, -1) < 0)
*r = *op0;
else
*r = *op1;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case MAX_EXPR:
if (op1->class == rvc_nan)
*r = *op1;
else if (do_compare (op0, op1, 1) < 0)
*r = *op1;
else
*r = *op0;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case NEGATE_EXPR:
*r = *op0;
r->sign ^= 1;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case ABS_EXPR:
*r = *op0;
r->sign = 0;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case FIX_TRUNC_EXPR:
do_fix_trunc (r, op0);
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Legacy. Similar, but return the result directly. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_arithmetic2 (int icode, const REAL_VALUE_TYPE *op0,
const REAL_VALUE_TYPE *op1)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE r;
real_arithmetic (&r, icode, op0, op1);
return r;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_compare (int icode, const REAL_VALUE_TYPE *op0,
const REAL_VALUE_TYPE *op1)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
enum tree_code code = icode;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (code)
{
case LT_EXPR:
return do_compare (op0, op1, 1) < 0;
case LE_EXPR:
return do_compare (op0, op1, 1) <= 0;
case GT_EXPR:
return do_compare (op0, op1, -1) > 0;
case GE_EXPR:
return do_compare (op0, op1, -1) >= 0;
case EQ_EXPR:
return do_compare (op0, op1, -1) == 0;
case NE_EXPR:
return do_compare (op0, op1, -1) != 0;
case UNORDERED_EXPR:
return op0->class == rvc_nan || op1->class == rvc_nan;
case ORDERED_EXPR:
return op0->class != rvc_nan && op1->class != rvc_nan;
case UNLT_EXPR:
return do_compare (op0, op1, -1) < 0;
case UNLE_EXPR:
return do_compare (op0, op1, -1) <= 0;
case UNGT_EXPR:
return do_compare (op0, op1, 1) > 0;
case UNGE_EXPR:
return do_compare (op0, op1, 1) >= 0;
case UNEQ_EXPR:
return do_compare (op0, op1, 0) == 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Return floor log2(R). */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_exponent (const REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
switch (r->class)
{
case rvc_zero:
return 0;
case rvc_inf:
case rvc_nan:
return (unsigned int)-1 >> 1;
case rvc_normal:
return r->exp;
default:
abort ();
}
}
/* R = OP0 * 2**EXP. */
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_ldexp (REAL_VALUE_TYPE *r, const REAL_VALUE_TYPE *op0, int exp)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
*r = *op0;
switch (r->class)
{
case rvc_zero:
case rvc_inf:
case rvc_nan:
break;
case rvc_normal:
exp += op0->exp;
if (exp > MAX_EXP)
get_inf (r, r->sign);
else if (exp < -MAX_EXP)
get_zero (r, r->sign);
else
r->exp = exp;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Determine whether a floating-point value X is infinite. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_isinf (const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return (r->class == rvc_inf);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Determine whether a floating-point value X is a NaN. */
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_isnan (const REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
return (r->class == rvc_nan);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Determine whether a floating-point value X is negative. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_isneg (const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return r->sign;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Determine whether a floating-point value X is minus zero. */
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_isnegzero (const REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
return r->sign && r->class == rvc_zero;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Compare two floating-point objects for bitwise identity. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
bool
real_identical (const REAL_VALUE_TYPE *a, const REAL_VALUE_TYPE *b)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
int i;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (a->class != b->class)
return false;
if (a->sign != b->sign)
return false;
switch (a->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
case rvc_inf:
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return true;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
if (a->exp != b->exp)
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return false;
break;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_nan:
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (a->signalling != b->signalling)
return false;
/* The significand is ignored for canonical NaNs. */
if (a->canonical || b->canonical)
return a->canonical == b->canonical;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
break;
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
for (i = 0; i < SIGSZ; ++i)
if (a->sig[i] != b->sig[i])
return false;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return true;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Try to change R into its exact multiplicative inverse in machine
mode MODE. Return true if successful. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
exact_real_inverse (enum machine_mode mode, REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
const REAL_VALUE_TYPE *one = real_digit (1);
REAL_VALUE_TYPE u;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
int i;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (r->class != rvc_normal)
return false;
/* Check for a power of two: all significand bits zero except the MSB. */
for (i = 0; i < SIGSZ-1; ++i)
if (r->sig[i] != 0)
return false;
if (r->sig[SIGSZ-1] != SIG_MSB)
return false;
/* Find the inverse and truncate to the required mode. */
do_divide (&u, one, r);
real_convert (&u, mode, &u);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* The rounding may have overflowed. */
if (u.class != rvc_normal)
return false;
for (i = 0; i < SIGSZ-1; ++i)
if (u.sig[i] != 0)
return false;
if (u.sig[SIGSZ-1] != SIG_MSB)
return false;
*r = u;
return true;
}
/* Render R as an integer. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
HOST_WIDE_INT
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_to_integer (const REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned HOST_WIDE_INT i;
switch (r->class)
{
case rvc_zero:
underflow:
return 0;
case rvc_inf:
case rvc_nan:
overflow:
i = (unsigned HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT - 1);
if (!r->sign)
i--;
return i;
case rvc_normal:
if (r->exp <= 0)
goto underflow;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Only force overflow for unsigned overflow. Signed overflow is
undefined, so it doesn't matter what we return, and some callers
expect to be able to use this routine for both signed and
unsigned conversions. */
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (r->exp > HOST_BITS_PER_WIDE_INT)
goto overflow;
if (HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG)
i = r->sig[SIGSZ-1];
else if (HOST_BITS_PER_WIDE_INT == 2*HOST_BITS_PER_LONG)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
i = r->sig[SIGSZ-1];
i = i << (HOST_BITS_PER_LONG - 1) << 1;
i |= r->sig[SIGSZ-2];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
i >>= HOST_BITS_PER_WIDE_INT - r->exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (r->sign)
i = -i;
return i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Likewise, but to an integer pair, HI+LOW. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_to_integer2 (HOST_WIDE_INT *plow, HOST_WIDE_INT *phigh,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE t;
HOST_WIDE_INT low, high;
int exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
underflow:
low = high = 0;
break;
case rvc_inf:
case rvc_nan:
overflow:
high = (unsigned HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT - 1);
if (r->sign)
low = 0;
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
high--;
low = -1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
exp = r->exp;
if (exp <= 0)
goto underflow;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Only force overflow for unsigned overflow. Signed overflow is
undefined, so it doesn't matter what we return, and some callers
expect to be able to use this routine for both signed and
unsigned conversions. */
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp > 2*HOST_BITS_PER_WIDE_INT)
goto overflow;
rshift_significand (&t, r, 2*HOST_BITS_PER_WIDE_INT - exp);
if (HOST_BITS_PER_WIDE_INT == HOST_BITS_PER_LONG)
{
high = t.sig[SIGSZ-1];
low = t.sig[SIGSZ-2];
}
else if (HOST_BITS_PER_WIDE_INT == 2*HOST_BITS_PER_LONG)
{
high = t.sig[SIGSZ-1];
high = high << (HOST_BITS_PER_LONG - 1) << 1;
high |= t.sig[SIGSZ-2];
low = t.sig[SIGSZ-3];
low = low << (HOST_BITS_PER_LONG - 1) << 1;
low |= t.sig[SIGSZ-4];
}
else
abort ();
if (r->sign)
{
if (low == 0)
high = -high;
else
low = -low, high = ~high;
}
break;
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
*plow = low;
*phigh = high;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* A subroutine of real_to_decimal. Compute the quotient and remainder
of NUM / DEN. Return the quotient and place the remainder in NUM.
It is expected that NUM / DEN are close enough that the quotient is
small. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static unsigned long
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
rtd_divmod (REAL_VALUE_TYPE *num, REAL_VALUE_TYPE *den)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long q, msb;
int expn = num->exp, expd = den->exp;
if (expn < expd)
return 0;
q = msb = 0;
goto start;
do
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
msb = num->sig[SIGSZ-1] & SIG_MSB;
q <<= 1;
lshift_significand_1 (num, num);
start:
if (msb || cmp_significands (num, den) >= 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sub_significands (num, num, den, 0);
q |= 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
while (--expn >= expd);
num->exp = expd;
normalize (num);
return q;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Render R as a decimal floating point constant. Emit DIGITS significant
digits in the result, bounded by BUF_SIZE. If DIGITS is 0, choose the
maximum for the representation. If CROP_TRAILING_ZEROS, strip trailing
zeros. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
#define M_LOG10_2 0.30102999566398119521
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_to_decimal (char *str, const REAL_VALUE_TYPE *r_orig, size_t buf_size,
size_t digits, int crop_trailing_zeros)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
const REAL_VALUE_TYPE *one, *ten;
REAL_VALUE_TYPE r, pten, u, v;
int dec_exp, cmp_one, digit;
size_t max_digits;
char *p, *first, *last;
bool sign;
r = *r_orig;
switch (r.class)
{
case rvc_zero:
strcpy (str, (r.sign ? "-0.0" : "0.0"));
return;
case rvc_normal:
break;
case rvc_inf:
strcpy (str, (r.sign ? "-Inf" : "+Inf"));
return;
case rvc_nan:
/* ??? Print the significand as well, if not canonical? */
strcpy (str, (r.sign ? "-NaN" : "+NaN"));
return;
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Bound the number of digits printed by the size of the representation. */
max_digits = SIGNIFICAND_BITS * M_LOG10_2;
if (digits == 0 || digits > max_digits)
digits = max_digits;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Estimate the decimal exponent, and compute the length of the string it
will print as. Be conservative and add one to account for possible
overflow or rounding error. */
dec_exp = r.exp * M_LOG10_2;
for (max_digits = 1; dec_exp ; max_digits++)
dec_exp /= 10;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Bound the number of digits printed by the size of the output buffer. */
max_digits = buf_size - 1 - 1 - 2 - max_digits - 1;
if (max_digits > buf_size)
abort ();
if (digits > max_digits)
digits = max_digits;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
one = real_digit (1);
ten = ten_to_ptwo (0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = r.sign;
r.sign = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
dec_exp = 0;
pten = *one;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
cmp_one = do_compare (&r, one, 0);
if (cmp_one > 0)
{
int m;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Number is greater than one. Convert significand to an integer
and strip trailing decimal zeros. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
u = r;
u.exp = SIGNIFICAND_BITS - 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Largest M, such that 10**2**M fits within SIGNIFICAND_BITS. */
m = floor_log2 (max_digits);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Iterate over the bits of the possible powers of 10 that might
be present in U and eliminate them. That is, if we find that
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
10**2**M divides U evenly, keep the division and increase
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
DEC_EXP by 2**M. */
do
{
REAL_VALUE_TYPE t;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
do_divide (&t, &u, ten_to_ptwo (m));
do_fix_trunc (&v, &t);
if (cmp_significands (&v, &t) == 0)
{
u = t;
dec_exp += 1 << m;
}
}
while (--m >= 0);
/* Revert the scaling to integer that we performed earlier. */
u.exp += r.exp - (SIGNIFICAND_BITS - 1);
r = u;
/* Find power of 10. Do this by dividing out 10**2**M when
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
this is larger than the current remainder. Fill PTEN with
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
the power of 10 that we compute. */
if (r.exp > 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
m = floor_log2 ((int)(r.exp * M_LOG10_2)) + 1;
do
{
const REAL_VALUE_TYPE *ptentwo = ten_to_ptwo (m);
if (do_compare (&u, ptentwo, 0) >= 0)
{
do_divide (&u, &u, ptentwo);
do_multiply (&pten, &pten, ptentwo);
dec_exp += 1 << m;
}
}
while (--m >= 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
/* We managed to divide off enough tens in the above reduction
loop that we've now got a negative exponent. Fall into the
less-than-one code to compute the proper value for PTEN. */
cmp_one = -1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (cmp_one < 0)
{
int m;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Number is less than one. Pad significand with leading
decimal zeros. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
v = r;
while (1)
{
/* Stop if we'd shift bits off the bottom. */
if (v.sig[0] & 7)
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
do_multiply (&u, &v, ten);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Stop if we're now >= 1. */
if (u.exp > 0)
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
v = u;
dec_exp -= 1;
}
r = v;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Find power of 10. Do this by multiplying in P=10**2**M when
the current remainder is smaller than 1/P. Fill PTEN with the
power of 10 that we compute. */
m = floor_log2 ((int)(-r.exp * M_LOG10_2)) + 1;
do
{
const REAL_VALUE_TYPE *ptentwo = ten_to_ptwo (m);
const REAL_VALUE_TYPE *ptenmtwo = ten_to_mptwo (m);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (do_compare (&v, ptenmtwo, 0) <= 0)
{
do_multiply (&v, &v, ptentwo);
do_multiply (&pten, &pten, ptentwo);
dec_exp -= 1 << m;
}
}
while (--m >= 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Invert the positive power of 10 that we've collected so far. */
do_divide (&pten, one, &pten);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
p = str;
if (sign)
*p++ = '-';
first = p++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* At this point, PTEN should contain the nearest power of 10 smaller
than R, such that this division produces the first digit.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Using a divide-step primitive that returns the complete integral
remainder avoids the rounding error that would be produced if
we were to use do_divide here and then simply multiply by 10 for
each subsequent digit. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
digit = rtd_divmod (&r, &pten);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Be prepared for error in that division via underflow ... */
if (digit == 0 && cmp_significand_0 (&r))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Multiply by 10 and try again. */
do_multiply (&r, &r, ten);
digit = rtd_divmod (&r, &pten);
dec_exp -= 1;
if (digit == 0)
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* ... or overflow. */
if (digit == 10)
{
*p++ = '1';
if (--digits > 0)
*p++ = '0';
dec_exp += 1;
}
else if (digit > 10)
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
*p++ = digit + '0';
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Generate subsequent digits. */
while (--digits > 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
do_multiply (&r, &r, ten);
digit = rtd_divmod (&r, &pten);
*p++ = digit + '0';
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
last = p;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Generate one more digit with which to do rounding. */
do_multiply (&r, &r, ten);
digit = rtd_divmod (&r, &pten);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Round the result. */
if (digit == 5)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Round to nearest. If R is nonzero there are additional
nonzero digits to be extracted. */
if (cmp_significand_0 (&r))
digit++;
/* Round to even. */
else if ((p[-1] - '0') & 1)
digit++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (digit > 5)
{
while (p > first)
{
digit = *--p;
if (digit == '9')
*p = '0';
else
{
*p = digit + 1;
break;
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Carry out of the first digit. This means we had all 9's and
now have all 0's. "Prepend" a 1 by overwriting the first 0. */
if (p == first)
{
first[1] = '1';
dec_exp++;
}
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Insert the decimal point. */
first[0] = first[1];
first[1] = '.';
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* If requested, drop trailing zeros. Never crop past "1.0". */
if (crop_trailing_zeros)
while (last > first + 3 && last[-1] == '0')
last--;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Append the exponent. */
sprintf (last, "e%+d", dec_exp);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Render R as a hexadecimal floating point constant. Emit DIGITS
significant digits in the result, bounded by BUF_SIZE. If DIGITS is 0,
choose the maximum for the representation. If CROP_TRAILING_ZEROS,
strip trailing zeros. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_to_hexadecimal (char *str, const REAL_VALUE_TYPE *r, size_t buf_size,
size_t digits, int crop_trailing_zeros)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int i, j, exp = r->exp;
char *p, *first;
char exp_buf[16];
size_t max_digits;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
exp = 0;
break;
case rvc_normal:
break;
case rvc_inf:
strcpy (str, (r->sign ? "-Inf" : "+Inf"));
return;
case rvc_nan:
/* ??? Print the significand as well, if not canonical? */
strcpy (str, (r->sign ? "-NaN" : "+NaN"));
return;
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (digits == 0)
digits = SIGNIFICAND_BITS / 4;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Bound the number of digits printed by the size of the output buffer. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sprintf (exp_buf, "p%+d", exp);
max_digits = buf_size - strlen (exp_buf) - r->sign - 4 - 1;
if (max_digits > buf_size)
abort ();
if (digits > max_digits)
digits = max_digits;
p = str;
if (r->sign)
*p++ = '-';
*p++ = '0';
*p++ = 'x';
*p++ = '0';
*p++ = '.';
first = p;
for (i = SIGSZ - 1; i >= 0; --i)
for (j = HOST_BITS_PER_LONG - 4; j >= 0; j -= 4)
{
*p++ = "0123456789abcdef"[(r->sig[i] >> j) & 15];
if (--digits == 0)
goto out;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
out:
if (crop_trailing_zeros)
while (p > first + 1 && p[-1] == '0')
p--;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sprintf (p, "p%+d", exp);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Initialize R from a decimal or hexadecimal string. The string is
assumed to have been syntax checked already. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_from_string (REAL_VALUE_TYPE *r, const char *str)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int exp = 0;
bool sign = false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
get_zero (r, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (*str == '-')
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = true;
str++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else if (*str == '+')
str++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (str[0] == '0' && (str[1] == 'x' || str[1] == 'X'))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Hexadecimal floating point. */
int pos = SIGNIFICAND_BITS - 4, d;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
str += 2;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
while (*str == '0')
str++;
while (1)
{
d = hex_value (*str);
if (d == _hex_bad)
break;
if (pos >= 0)
{
r->sig[pos / HOST_BITS_PER_LONG]
|= (unsigned long) d << (pos % HOST_BITS_PER_LONG);
pos -= 4;
}
exp += 4;
str++;
}
if (*str == '.')
{
str++;
if (pos == SIGNIFICAND_BITS - 4)
{
while (*str == '0')
str++, exp -= 4;
}
while (1)
{
d = hex_value (*str);
if (d == _hex_bad)
break;
if (pos >= 0)
{
r->sig[pos / HOST_BITS_PER_LONG]
|= (unsigned long) d << (pos % HOST_BITS_PER_LONG);
pos -= 4;
}
str++;
}
}
if (*str == 'p' || *str == 'P')
{
bool exp_neg = false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
str++;
if (*str == '-')
{
exp_neg = true;
str++;
}
else if (*str == '+')
str++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
d = 0;
while (ISDIGIT (*str))
{
d *= 10;
d += *str - '0';
if (d > MAX_EXP)
{
/* Overflowed the exponent. */
if (exp_neg)
goto underflow;
else
goto overflow;
}
str++;
}
if (exp_neg)
d = -d;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp += d;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->exp = exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Decimal floating point. */
const REAL_VALUE_TYPE *ten = ten_to_ptwo (0);
int d;
while (*str == '0')
str++;
while (ISDIGIT (*str))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
d = *str++ - '0';
do_multiply (r, r, ten);
if (d)
do_add (r, r, real_digit (d), 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (*str == '.')
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
str++;
if (r->class == rvc_zero)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
while (*str == '0')
str++, exp--;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
while (ISDIGIT (*str))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
d = *str++ - '0';
do_multiply (r, r, ten);
if (d)
do_add (r, r, real_digit (d), 0);
exp--;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (*str == 'e' || *str == 'E')
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool exp_neg = false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
str++;
if (*str == '-')
{
exp_neg = true;
str++;
}
else if (*str == '+')
str++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
d = 0;
while (ISDIGIT (*str))
{
d *= 10;
d += *str - '0';
if (d > MAX_EXP)
{
/* Overflowed the exponent. */
if (exp_neg)
goto underflow;
else
goto overflow;
}
str++;
}
if (exp_neg)
d = -d;
exp += d;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp)
times_pten (r, exp);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sign = sign;
return;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
underflow:
get_zero (r, sign);
return;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
overflow:
get_inf (r, sign);
return;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Legacy. Similar, but return the result directly. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_from_string2 (const char *s, enum machine_mode mode)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE r;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
real_from_string (&r, s);
if (mode != VOIDmode)
real_convert (&r, mode, &r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return r;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Initialize R from the integer pair HIGH+LOW. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_from_integer (REAL_VALUE_TYPE *r, enum machine_mode mode,
unsigned HOST_WIDE_INT low, HOST_WIDE_INT high,
int unsigned_p)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (low == 0 && high == 0)
get_zero (r, 0);
else
{
Gcc 3.4.4 release.
2005-06-03 03:28:44 +00:00
memset (r, 0, sizeof (*r));
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = high < 0 && !unsigned_p;
r->exp = 2 * HOST_BITS_PER_WIDE_INT;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (r->sign)
{
high = ~high;
if (low == 0)
high += 1;
else
low = -low;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == HOST_BITS_PER_WIDE_INT)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[SIGSZ-1] = high;
r->sig[SIGSZ-2] = low;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else if (HOST_BITS_PER_LONG*2 == HOST_BITS_PER_WIDE_INT)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[SIGSZ-1] = high >> (HOST_BITS_PER_LONG - 1) >> 1;
r->sig[SIGSZ-2] = high;
r->sig[SIGSZ-3] = low >> (HOST_BITS_PER_LONG - 1) >> 1;
r->sig[SIGSZ-4] = low;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
abort ();
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (mode != VOIDmode)
real_convert (r, mode, r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Returns 10**2**N. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static const REAL_VALUE_TYPE *
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
ten_to_ptwo (int n)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static REAL_VALUE_TYPE tens[EXP_BITS];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (n < 0 || n >= EXP_BITS)
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (tens[n].class == rvc_zero)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (n < (HOST_BITS_PER_WIDE_INT == 64 ? 5 : 4))
{
HOST_WIDE_INT t = 10;
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; i < n; ++i)
t *= t;
real_from_integer (&tens[n], VOIDmode, t, 0, 1);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
const REAL_VALUE_TYPE *t = ten_to_ptwo (n - 1);
do_multiply (&tens[n], t, t);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return &tens[n];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Returns 10**(-2**N). */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static const REAL_VALUE_TYPE *
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
ten_to_mptwo (int n)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static REAL_VALUE_TYPE tens[EXP_BITS];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (n < 0 || n >= EXP_BITS)
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (tens[n].class == rvc_zero)
do_divide (&tens[n], real_digit (1), ten_to_ptwo (n));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return &tens[n];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Returns N. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static const REAL_VALUE_TYPE *
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_digit (int n)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
static REAL_VALUE_TYPE num[10];
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (n < 0 || n > 9)
abort ();
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (n > 0 && num[n].class == rvc_zero)
real_from_integer (&num[n], VOIDmode, n, 0, 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return &num[n];
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Multiply R by 10**EXP. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
times_pten (REAL_VALUE_TYPE *r, int exp)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE pten, *rr;
bool negative = (exp < 0);
int i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (negative)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp = -exp;
pten = *real_digit (1);
rr = &pten;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
rr = r;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
for (i = 0; exp > 0; ++i, exp >>= 1)
if (exp & 1)
do_multiply (rr, rr, ten_to_ptwo (i));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (negative)
do_divide (r, r, &pten);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Fills R with +Inf. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_inf (REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
get_inf (r, 0);
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Fills R with a NaN whose significand is described by STR. If QUIET,
we force a QNaN, else we force an SNaN. The string, if not empty,
is parsed as a number and placed in the significand. Return true
if the string was successfully parsed. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_nan (REAL_VALUE_TYPE *r, const char *str, int quiet,
enum machine_mode mode)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
const struct real_format *fmt;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
fmt = REAL_MODE_FORMAT (mode);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (fmt == NULL)
abort ();
if (*str == 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (quiet)
get_canonical_qnan (r, 0);
else
get_canonical_snan (r, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int base = 10, d;
bool neg = false;
memset (r, 0, sizeof (*r));
r->class = rvc_nan;
/* Parse akin to strtol into the significand of R. */
while (ISSPACE (*str))
str++;
if (*str == '-')
str++, neg = true;
else if (*str == '+')
str++;
if (*str == '0')
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (*++str == 'x')
str++, base = 16;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
base = 8;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
while ((d = hex_value (*str)) < base)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE u;
switch (base)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case 8:
lshift_significand (r, r, 3);
break;
case 16:
lshift_significand (r, r, 4);
break;
case 10:
lshift_significand_1 (&u, r);
lshift_significand (r, r, 3);
add_significands (r, r, &u);
break;
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
get_zero (&u, 0);
u.sig[0] = d;
add_significands (r, r, &u);
str++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Must have consumed the entire string for success. */
if (*str != 0)
return false;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Shift the significand into place such that the bits
are in the most significant bits for the format. */
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
lshift_significand (r, r, SIGNIFICAND_BITS - fmt->pnan);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Our MSB is always unset for NaNs. */
r->sig[SIGSZ-1] &= ~SIG_MSB;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Force quiet or signalling NaN. */
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
r->signalling = !quiet;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return true;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Fills R with the largest finite value representable in mode MODE.
If SIGN is nonzero, R is set to the most negative finite value. */
void
real_maxval (REAL_VALUE_TYPE *r, int sign, enum machine_mode mode)
{
const struct real_format *fmt;
int np2;
fmt = REAL_MODE_FORMAT (mode);
if (fmt == NULL)
abort ();
r->class = rvc_normal;
r->sign = sign;
r->signalling = 0;
r->canonical = 0;
r->exp = fmt->emax * fmt->log2_b;
np2 = SIGNIFICAND_BITS - fmt->p * fmt->log2_b;
memset (r->sig, -1, SIGSZ * sizeof (unsigned long));
clear_significand_below (r, np2);
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Fills R with 2**N. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_2expN (REAL_VALUE_TYPE *r, int n)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
n++;
if (n > MAX_EXP)
r->class = rvc_inf;
else if (n < -MAX_EXP)
;
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->exp = n;
r->sig[SIGSZ-1] = SIG_MSB;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
round_for_format (const struct real_format *fmt, REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int p2, np2, i, w;
unsigned long sticky;
bool guard, lsb;
int emin2m1, emax2;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
p2 = fmt->p * fmt->log2_b;
emin2m1 = (fmt->emin - 1) * fmt->log2_b;
emax2 = fmt->emax * fmt->log2_b;
np2 = SIGNIFICAND_BITS - p2;
switch (r->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
underflow:
get_zero (r, r->sign);
case rvc_zero:
if (!fmt->has_signed_zero)
r->sign = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
overflow:
get_inf (r, r->sign);
case rvc_inf:
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
return;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_nan:
clear_significand_below (r, np2);
return;
case rvc_normal:
break;
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* If we're not base2, normalize the exponent to a multiple of
the true base. */
if (fmt->log2_b != 1)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int shift = r->exp & (fmt->log2_b - 1);
if (shift)
{
shift = fmt->log2_b - shift;
r->sig[0] |= sticky_rshift_significand (r, r, shift);
r->exp += shift;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Check the range of the exponent. If we're out of range,
either underflow or overflow. */
if (r->exp > emax2)
goto overflow;
else if (r->exp <= emin2m1)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int diff;
if (!fmt->has_denorm)
{
/* Don't underflow completely until we've had a chance to round. */
if (r->exp < emin2m1)
goto underflow;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
{
diff = emin2m1 - r->exp + 1;
if (diff > p2)
goto underflow;
/* De-normalize the significand. */
r->sig[0] |= sticky_rshift_significand (r, r, diff);
r->exp += diff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* There are P2 true significand bits, followed by one guard bit,
followed by one sticky bit, followed by stuff. Fold nonzero
stuff into the sticky bit. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sticky = 0;
for (i = 0, w = (np2 - 1) / HOST_BITS_PER_LONG; i < w; ++i)
sticky |= r->sig[i];
sticky |=
r->sig[w] & (((unsigned long)1 << ((np2 - 1) % HOST_BITS_PER_LONG)) - 1);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
guard = test_significand_bit (r, np2 - 1);
lsb = test_significand_bit (r, np2);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Round to even. */
if (guard && (sticky || lsb))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE u;
get_zero (&u, 0);
set_significand_bit (&u, np2);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (add_significands (r, r, &u))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Overflow. Means the significand had been all ones, and
is now all zeros. Need to increase the exponent, and
possibly re-normalize it. */
if (++r->exp > emax2)
goto overflow;
r->sig[SIGSZ-1] = SIG_MSB;
if (fmt->log2_b != 1)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int shift = r->exp & (fmt->log2_b - 1);
if (shift)
{
shift = fmt->log2_b - shift;
rshift_significand (r, r, shift);
r->exp += shift;
if (r->exp > emax2)
goto overflow;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Catch underflow that we deferred until after rounding. */
if (r->exp <= emin2m1)
goto underflow;
/* Clear out trailing garbage. */
clear_significand_below (r, np2);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Extend or truncate to a new mode. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_convert (REAL_VALUE_TYPE *r, enum machine_mode mode,
const REAL_VALUE_TYPE *a)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
const struct real_format *fmt;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
fmt = REAL_MODE_FORMAT (mode);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (fmt == NULL)
abort ();
*r = *a;
round_for_format (fmt, r);
/* round_for_format de-normalizes denormals. Undo just that part. */
if (r->class == rvc_normal)
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Legacy. Likewise, except return the struct directly. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_value_truncate (enum machine_mode mode, REAL_VALUE_TYPE a)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE r;
real_convert (&r, mode, &a);
return r;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Return true if truncating to MODE is exact. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
exact_real_truncate (enum machine_mode mode, const REAL_VALUE_TYPE *a)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
REAL_VALUE_TYPE t;
real_convert (&t, mode, a);
return real_identical (&t, a);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Write R to the given target format. Place the words of the result
in target word order in BUF. There are always 32 bits in each
long, no matter the size of the host long.
Legacy: return word 0 for implementing REAL_VALUE_TO_TARGET_SINGLE. */
long
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_to_target_fmt (long *buf, const REAL_VALUE_TYPE *r_orig,
const struct real_format *fmt)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
REAL_VALUE_TYPE r;
long buf1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r = *r_orig;
round_for_format (fmt, &r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (!buf)
buf = &buf1;
(*fmt->encode) (fmt, buf, &r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return *buf;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Similar, but look up the format from MODE. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
long
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_to_target (long *buf, const REAL_VALUE_TYPE *r, enum machine_mode mode)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
const struct real_format *fmt;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
fmt = REAL_MODE_FORMAT (mode);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (fmt == NULL)
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return real_to_target_fmt (buf, r, fmt);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Read R from the given target format. Read the words of the result
in target word order in BUF. There are always 32 bits in each
long, no matter the size of the host long. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_from_target_fmt (REAL_VALUE_TYPE *r, const long *buf,
const struct real_format *fmt)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
(*fmt->decode) (fmt, r, buf);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Similar, but look up the format from MODE. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_from_target (REAL_VALUE_TYPE *r, const long *buf, enum machine_mode mode)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
const struct real_format *fmt;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
fmt = REAL_MODE_FORMAT (mode);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (fmt == NULL)
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
(*fmt->decode) (fmt, r, buf);
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Return the number of bits in the significand for MODE. */
/* ??? Legacy. Should get access to real_format directly. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
int
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
significand_size (enum machine_mode mode)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
const struct real_format *fmt;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
fmt = REAL_MODE_FORMAT (mode);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (fmt == NULL)
return 0;
return fmt->p * fmt->log2_b;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Return a hash value for the given real value. */
/* ??? The "unsigned int" return value is intended to be hashval_t,
but I didn't want to pull hashtab.h into real.h. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned int
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
real_hash (const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned int h;
size_t i;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
h = r->class | (r->sign << 2);
switch (r->class)
{
case rvc_zero:
case rvc_inf:
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
return h;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
h |= r->exp << 3;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_nan:
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (r->signalling)
h ^= (unsigned int)-1;
if (r->canonical)
return h;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (sizeof(unsigned long) > sizeof(unsigned int))
for (i = 0; i < SIGSZ; ++i)
{
unsigned long s = r->sig[i];
h ^= s ^ (s >> (HOST_BITS_PER_LONG / 2));
}
else
for (i = 0; i < SIGSZ; ++i)
h ^= r->sig[i];
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
return h;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* IEEE single-precision format. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_ieee_single (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_ieee_single (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_single (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image, sig, exp;
Gcc 3.3.3 20031106.
2003-11-07 02:43:04 +00:00
unsigned long sign = r->sign;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.3 20031106.
2003-11-07 02:43:04 +00:00
image = sign << 31;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sig = (r->sig[SIGSZ-1] >> (HOST_BITS_PER_LONG - 24)) & 0x7fffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
{
case rvc_zero:
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_inf:
if (fmt->has_inf)
image |= 255 << 23;
else
image |= 0x7fffffff;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_nan:
if (fmt->has_nans)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (r->canonical)
sig = 0;
if (r->signalling == fmt->qnan_msb_set)
sig &= ~(1 << 22);
else
sig |= 1 << 22;
/* We overload qnan_msb_set here: it's only clear for
mips_ieee_single, which wants all mantissa bits but the
quiet/signalling one set in canonical NaNs (at least
Quiet ones). */
if (r->canonical && !fmt->qnan_msb_set)
sig |= (1 << 22) - 1;
else if (sig == 0)
sig = 1 << 21;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image |= 255 << 23;
image |= sig;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
image |= 0x7fffffff;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
/* Recall that IEEE numbers are interpreted as 1.F x 2**exp,
whereas the intermediate representation is 0.F x 2**exp.
Which means we're off by one. */
if (denormal)
exp = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp = r->exp + 127 - 1;
image |= exp << 23;
image |= sig;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
buf[0] = image;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_ieee_single (const struct real_format *fmt, REAL_VALUE_TYPE *r,
const long *buf)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long image = buf[0] & 0xffffffff;
bool sign = (image >> 31) & 1;
int exp = (image >> 23) & 0xff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
image <<= HOST_BITS_PER_LONG - 24;
image &= ~SIG_MSB;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp == 0)
{
if (image && fmt->has_denorm)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
r->exp = -126;
r->sig[SIGSZ-1] = image << 1;
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else if (fmt->has_signed_zero)
r->sign = sign;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else if (exp == 255 && (fmt->has_nans || fmt->has_inf))
{
if (image)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_nan;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
r->signalling = (((image >> (HOST_BITS_PER_LONG - 2)) & 1)
^ fmt->qnan_msb_set);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[SIGSZ-1] = image;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_inf;
r->sign = sign;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
else
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
r->exp = exp - 127 + 1;
r->sig[SIGSZ-1] = image | SIG_MSB;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ieee_single_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_ieee_single,
decode_ieee_single,
2,
1,
24,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
24,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-125,
128,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
31,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format mips_single_format =
{
encode_ieee_single,
decode_ieee_single,
2,
1,
24,
24,
-125,
128,
31,
true,
true,
true,
true,
false
};
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* IEEE double-precision format. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_ieee_double (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_ieee_double (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_double (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image_lo, image_hi, sig_lo, sig_hi, exp;
bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_hi = r->sign << 31;
image_lo = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == 64)
{
sig_hi = r->sig[SIGSZ-1];
sig_lo = (sig_hi >> (64 - 53)) & 0xffffffff;
sig_hi = (sig_hi >> (64 - 53 + 1) >> 31) & 0xfffff;
}
else
{
sig_hi = r->sig[SIGSZ-1];
sig_lo = r->sig[SIGSZ-2];
sig_lo = (sig_hi << 21) | (sig_lo >> 11);
sig_hi = (sig_hi >> 11) & 0xfffff;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
{
case rvc_zero:
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_inf:
if (fmt->has_inf)
image_hi |= 2047 << 20;
else
{
image_hi |= 0x7fffffff;
image_lo = 0xffffffff;
}
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_nan:
if (fmt->has_nans)
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (r->canonical)
sig_hi = sig_lo = 0;
if (r->signalling == fmt->qnan_msb_set)
sig_hi &= ~(1 << 19);
else
sig_hi |= 1 << 19;
/* We overload qnan_msb_set here: it's only clear for
mips_ieee_single, which wants all mantissa bits but the
quiet/signalling one set in canonical NaNs (at least
Quiet ones). */
if (r->canonical && !fmt->qnan_msb_set)
{
sig_hi |= (1 << 19) - 1;
sig_lo = 0xffffffff;
}
else if (sig_hi == 0 && sig_lo == 0)
sig_hi = 1 << 18;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_hi |= 2047 << 20;
image_hi |= sig_hi;
image_lo = sig_lo;
}
else
{
image_hi |= 0x7fffffff;
image_lo = 0xffffffff;
}
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
/* Recall that IEEE numbers are interpreted as 1.F x 2**exp,
whereas the intermediate representation is 0.F x 2**exp.
Which means we're off by one. */
if (denormal)
exp = 0;
else
exp = r->exp + 1023 - 1;
image_hi |= exp << 20;
image_hi |= sig_hi;
image_lo = sig_lo;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
buf[0] = image_hi, buf[1] = image_lo;
else
buf[0] = image_lo, buf[1] = image_hi;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_ieee_double (const struct real_format *fmt, REAL_VALUE_TYPE *r,
const long *buf)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image_hi, image_lo;
bool sign;
int exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
image_hi = buf[0], image_lo = buf[1];
else
image_lo = buf[0], image_hi = buf[1];
image_lo &= 0xffffffff;
image_hi &= 0xffffffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = (image_hi >> 31) & 1;
exp = (image_hi >> 20) & 0x7ff;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_hi <<= 32 - 21;
image_hi |= image_lo >> 21;
image_hi &= 0x7fffffff;
image_lo <<= 32 - 21;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp == 0)
{
if ((image_hi || image_lo) && fmt->has_denorm)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
r->exp = -1022;
if (HOST_BITS_PER_LONG == 32)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_hi = (image_hi << 1) | (image_lo >> 31);
image_lo <<= 1;
r->sig[SIGSZ-1] = image_hi;
r->sig[SIGSZ-2] = image_lo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
else
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_hi = (image_hi << 31 << 2) | (image_lo << 1);
r->sig[SIGSZ-1] = image_hi;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else if (fmt->has_signed_zero)
r->sign = sign;
}
else if (exp == 2047 && (fmt->has_nans || fmt->has_inf))
{
if (image_hi || image_lo)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_nan;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
r->signalling = ((image_hi >> 30) & 1) ^ fmt->qnan_msb_set;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == 32)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[SIGSZ-1] = image_hi;
r->sig[SIGSZ-2] = image_lo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
r->sig[SIGSZ-1] = (image_hi << 31 << 1) | image_lo;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_inf;
r->sign = sign;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
else
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
r->exp = exp - 1023 + 1;
if (HOST_BITS_PER_LONG == 32)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[SIGSZ-1] = image_hi | SIG_MSB;
r->sig[SIGSZ-2] = image_lo;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
r->sig[SIGSZ-1] = (image_hi << 31 << 1) | image_lo | SIG_MSB;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ieee_double_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_ieee_double,
decode_ieee_double,
2,
1,
53,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
53,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-1021,
1024,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
63,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format mips_double_format =
{
encode_ieee_double,
decode_ieee_double,
2,
1,
53,
53,
-1021,
1024,
63,
true,
true,
true,
true,
false
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* IEEE extended real format. This comes in three flavors: Intel's as
a 12 byte image, Intel's as a 16 byte image, and Motorola's. Intel
12- and 16-byte images may be big- or little endian; Motorola's is
always big endian. */
/* Helper subroutine which converts from the internal format to the
12-byte little-endian Intel format. Functions below adjust this
for the other possible formats. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_extended (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image_hi, sig_hi, sig_lo;
bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_hi = r->sign << 15;
sig_hi = sig_lo = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_inf:
if (fmt->has_inf)
{
image_hi |= 32767;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Intel requires the explicit integer bit to be set, otherwise
it considers the value a "pseudo-infinity". Motorola docs
say it doesn't care. */
sig_hi = 0x80000000;
}
else
{
image_hi |= 32767;
sig_lo = sig_hi = 0xffffffff;
}
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_nan:
if (fmt->has_nans)
{
image_hi |= 32767;
if (HOST_BITS_PER_LONG == 32)
{
sig_hi = r->sig[SIGSZ-1];
sig_lo = r->sig[SIGSZ-2];
}
else
{
sig_lo = r->sig[SIGSZ-1];
sig_hi = sig_lo >> 31 >> 1;
sig_lo &= 0xffffffff;
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (r->signalling == fmt->qnan_msb_set)
sig_hi &= ~(1 << 30);
else
sig_hi |= 1 << 30;
if ((sig_hi & 0x7fffffff) == 0 && sig_lo == 0)
sig_hi = 1 << 29;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Intel requires the explicit integer bit to be set, otherwise
it considers the value a "pseudo-nan". Motorola docs say it
doesn't care. */
sig_hi |= 0x80000000;
}
else
{
image_hi |= 32767;
sig_lo = sig_hi = 0xffffffff;
}
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
{
int exp = r->exp;
/* Recall that IEEE numbers are interpreted as 1.F x 2**exp,
whereas the intermediate representation is 0.F x 2**exp.
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Which means we're off by one.
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Except for Motorola, which consider exp=0 and explicit
integer bit set to continue to be normalized. In theory
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
this discrepancy has been taken care of by the difference
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
in fmt->emin in round_for_format. */
if (denormal)
exp = 0;
else
{
exp += 16383 - 1;
if (exp < 0)
abort ();
}
image_hi |= exp;
if (HOST_BITS_PER_LONG == 32)
{
sig_hi = r->sig[SIGSZ-1];
sig_lo = r->sig[SIGSZ-2];
}
else
{
sig_lo = r->sig[SIGSZ-1];
sig_hi = sig_lo >> 31 >> 1;
sig_lo &= 0xffffffff;
}
}
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
buf[0] = sig_lo, buf[1] = sig_hi, buf[2] = image_hi;
}
/* Convert from the internal format to the 12-byte Motorola format
for an IEEE extended real. */
static void
encode_ieee_extended_motorola (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
{
long intermed[3];
encode_ieee_extended (fmt, intermed, r);
/* Motorola chips are assumed always to be big-endian. Also, the
padding in a Motorola extended real goes between the exponent and
the mantissa. At this point the mantissa is entirely within
elements 0 and 1 of intermed, and the exponent entirely within
element 2, so all we have to do is swap the order around, and
shift element 2 left 16 bits. */
buf[0] = intermed[2] << 16;
buf[1] = intermed[1];
buf[2] = intermed[0];
}
/* Convert from the internal format to the 12-byte Intel format for
an IEEE extended real. */
static void
encode_ieee_extended_intel_96 (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
{
/* All the padding in an Intel-format extended real goes at the high
end, which in this case is after the mantissa, not the exponent.
Therefore we must shift everything down 16 bits. */
long intermed[3];
encode_ieee_extended (fmt, intermed, r);
buf[0] = ((intermed[2] << 16) | ((unsigned long)(intermed[1] & 0xFFFF0000) >> 16));
buf[1] = ((intermed[1] << 16) | ((unsigned long)(intermed[0] & 0xFFFF0000) >> 16));
buf[2] = (intermed[0] << 16);
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* encode_ieee_extended produces what we want directly. */
encode_ieee_extended (fmt, buf, r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Convert from the internal format to the 16-byte Intel format for
an IEEE extended real. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_extended_intel_128 (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* All the padding in an Intel-format extended real goes at the high end. */
encode_ieee_extended_intel_96 (fmt, buf, r);
buf[3] = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* As above, we have a helper function which converts from 12-byte
little-endian Intel format to internal format. Functions below
adjust for the other possible formats. */
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_ieee_extended (const struct real_format *fmt, REAL_VALUE_TYPE *r,
const long *buf)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long image_hi, sig_hi, sig_lo;
bool sign;
int exp;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
sig_lo = buf[0], sig_hi = buf[1], image_hi = buf[2];
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sig_lo &= 0xffffffff;
sig_hi &= 0xffffffff;
image_hi &= 0xffffffff;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = (image_hi >> 15) & 1;
exp = image_hi & 0x7fff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp == 0)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if ((sig_hi || sig_lo) && fmt->has_denorm)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
/* When the IEEE format contains a hidden bit, we know that
it's zero at this point, and so shift up the significand
and decrease the exponent to match. In this case, Motorola
defines the explicit integer bit to be valid, so we don't
know whether the msb is set or not. */
r->exp = fmt->emin;
if (HOST_BITS_PER_LONG == 32)
{
r->sig[SIGSZ-1] = sig_hi;
r->sig[SIGSZ-2] = sig_lo;
}
else
r->sig[SIGSZ-1] = (sig_hi << 31 << 1) | sig_lo;
normalize (r);
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else if (fmt->has_signed_zero)
r->sign = sign;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else if (exp == 32767 && (fmt->has_nans || fmt->has_inf))
{
/* See above re "pseudo-infinities" and "pseudo-nans".
Short summary is that the MSB will likely always be
set, and that we don't care about it. */
sig_hi &= 0x7fffffff;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (sig_hi || sig_lo)
{
r->class = rvc_nan;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
r->signalling = ((sig_hi >> 30) & 1) ^ fmt->qnan_msb_set;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == 32)
{
r->sig[SIGSZ-1] = sig_hi;
r->sig[SIGSZ-2] = sig_lo;
}
else
r->sig[SIGSZ-1] = (sig_hi << 31 << 1) | sig_lo;
}
else
{
r->class = rvc_inf;
r->sign = sign;
}
}
else
{
r->class = rvc_normal;
r->sign = sign;
r->exp = exp - 16383 + 1;
if (HOST_BITS_PER_LONG == 32)
{
r->sig[SIGSZ-1] = sig_hi;
r->sig[SIGSZ-2] = sig_lo;
}
else
r->sig[SIGSZ-1] = (sig_hi << 31 << 1) | sig_lo;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Convert from the internal format to the 12-byte Motorola format
for an IEEE extended real. */
static void
decode_ieee_extended_motorola (const struct real_format *fmt, REAL_VALUE_TYPE *r,
const long *buf)
{
long intermed[3];
/* Motorola chips are assumed always to be big-endian. Also, the
padding in a Motorola extended real goes between the exponent and
the mantissa; remove it. */
intermed[0] = buf[2];
intermed[1] = buf[1];
intermed[2] = (unsigned long)buf[0] >> 16;
decode_ieee_extended (fmt, r, intermed);
}
/* Convert from the internal format to the 12-byte Intel format for
an IEEE extended real. */
static void
decode_ieee_extended_intel_96 (const struct real_format *fmt, REAL_VALUE_TYPE *r,
const long *buf)
{
if (FLOAT_WORDS_BIG_ENDIAN)
{
/* All the padding in an Intel-format extended real goes at the high
end, which in this case is after the mantissa, not the exponent.
Therefore we must shift everything up 16 bits. */
long intermed[3];
intermed[0] = (((unsigned long)buf[2] >> 16) | (buf[1] << 16));
intermed[1] = (((unsigned long)buf[1] >> 16) | (buf[0] << 16));
intermed[2] = ((unsigned long)buf[0] >> 16);
decode_ieee_extended (fmt, r, intermed);
}
else
/* decode_ieee_extended produces what we want directly. */
decode_ieee_extended (fmt, r, buf);
}
/* Convert from the internal format to the 16-byte Intel format for
an IEEE extended real. */
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_ieee_extended_intel_128 (const struct real_format *fmt, REAL_VALUE_TYPE *r,
const long *buf)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* All the padding in an Intel-format extended real goes at the high end. */
decode_ieee_extended_intel_96 (fmt, r, buf);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ieee_extended_motorola_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_extended_motorola,
decode_ieee_extended_motorola,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
2,
1,
64,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
64,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-16382,
16384,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
95,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ieee_extended_intel_96_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_extended_intel_96,
decode_ieee_extended_intel_96,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
2,
1,
64,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
64,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-16381,
16384,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
79,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ieee_extended_intel_128_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_extended_intel_128,
decode_ieee_extended_intel_128,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
2,
1,
64,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
64,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-16381,
16384,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
79,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
/* The following caters to i386 systems that set the rounding precision
to 53 bits instead of 64, e.g. FreeBSD. */
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ieee_extended_intel_96_round_53_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_extended_intel_96,
decode_ieee_extended_intel_96,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
2,
1,
53,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
53,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-16381,
16384,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
79,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
/* IBM 128-bit extended precision format: a pair of IEEE double precision
numbers whose sum is equal to the extended precision value. The number
with greater magnitude is first. This format has the same magnitude
range as an IEEE double precision value, but effectively 106 bits of
significand precision. Infinity and NaN are represented by their IEEE
double precision value stored in the first number, the second number is
ignored. Zeroes, Infinities, and NaNs are set in both doubles
due to precedent. */
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_ibm_extended (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_ibm_extended (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ibm_extended (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
REAL_VALUE_TYPE u, normr, v;
const struct real_format *base_fmt;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
base_fmt = fmt->qnan_msb_set ? &ieee_double_format : &mips_double_format;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Renormlize R before doing any arithmetic on it. */
normr = *r;
if (normr.class == rvc_normal)
normalize (&normr);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* u = IEEE double precision portion of significand. */
u = normr;
round_for_format (base_fmt, &u);
encode_ieee_double (base_fmt, &buf[0], &u);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (u.class == rvc_normal)
{
do_add (&v, &normr, &u, 1);
/* Call round_for_format since we might need to denormalize. */
round_for_format (base_fmt, &v);
encode_ieee_double (base_fmt, &buf[2], &v);
}
else
{
/* Inf, NaN, 0 are all representable as doubles, so the
least-significant part can be 0.0. */
buf[2] = 0;
buf[3] = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_ibm_extended (const struct real_format *fmt ATTRIBUTE_UNUSED, REAL_VALUE_TYPE *r,
const long *buf)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
REAL_VALUE_TYPE u, v;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format *base_fmt;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
base_fmt = fmt->qnan_msb_set ? &ieee_double_format : &mips_double_format;
decode_ieee_double (base_fmt, &u, &buf[0]);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (u.class != rvc_zero && u.class != rvc_inf && u.class != rvc_nan)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_ieee_double (base_fmt, &v, &buf[2]);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
do_add (r, &u, &v, 0);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
*r = u;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ibm_extended_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_ibm_extended,
decode_ibm_extended,
2,
1,
53 + 53,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
53,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-1021 + 53,
1024,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
-1,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format mips_extended_format =
{
encode_ibm_extended,
decode_ibm_extended,
2,
1,
53 + 53,
53,
-1021 + 53,
1024,
-1,
true,
true,
true,
true,
false
};
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* IEEE quad precision format. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_ieee_quad (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_ieee_quad (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_ieee_quad (const struct real_format *fmt, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image3, image2, image1, image0, exp;
bool denormal = (r->sig[SIGSZ-1] & SIG_MSB) == 0;
REAL_VALUE_TYPE u;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image3 = r->sign << 31;
image2 = 0;
image1 = 0;
image0 = 0;
rshift_significand (&u, r, SIGNIFICAND_BITS - 113);
switch (r->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
break;
case rvc_inf:
if (fmt->has_inf)
image3 |= 32767 << 16;
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image3 |= 0x7fffffff;
image2 = 0xffffffff;
image1 = 0xffffffff;
image0 = 0xffffffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
break;
case rvc_nan:
if (fmt->has_nans)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image3 |= 32767 << 16;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (r->canonical)
{
/* Don't use bits from the significand. The
initialization above is right. */
}
else if (HOST_BITS_PER_LONG == 32)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
image0 = u.sig[0];
image1 = u.sig[1];
image2 = u.sig[2];
image3 |= u.sig[3] & 0xffff;
}
else
{
image0 = u.sig[0];
image1 = image0 >> 31 >> 1;
image2 = u.sig[1];
image3 |= (image2 >> 31 >> 1) & 0xffff;
image0 &= 0xffffffff;
image2 &= 0xffffffff;
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
if (r->signalling == fmt->qnan_msb_set)
image3 &= ~0x8000;
else
image3 |= 0x8000;
/* We overload qnan_msb_set here: it's only clear for
mips_ieee_single, which wants all mantissa bits but the
quiet/signalling one set in canonical NaNs (at least
Quiet ones). */
if (r->canonical && !fmt->qnan_msb_set)
{
image3 |= 0x7fff;
image2 = image1 = image0 = 0xffffffff;
}
else if (((image3 & 0xffff) | image2 | image1 | image0) == 0)
image3 |= 0x4000;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
{
image3 |= 0x7fffffff;
image2 = 0xffffffff;
image1 = 0xffffffff;
image0 = 0xffffffff;
}
break;
case rvc_normal:
/* Recall that IEEE numbers are interpreted as 1.F x 2**exp,
whereas the intermediate representation is 0.F x 2**exp.
Which means we're off by one. */
if (denormal)
exp = 0;
else
exp = r->exp + 16383 - 1;
image3 |= exp << 16;
if (HOST_BITS_PER_LONG == 32)
{
image0 = u.sig[0];
image1 = u.sig[1];
image2 = u.sig[2];
image3 |= u.sig[3] & 0xffff;
}
else
{
image0 = u.sig[0];
image1 = image0 >> 31 >> 1;
image2 = u.sig[1];
image3 |= (image2 >> 31 >> 1) & 0xffff;
image0 &= 0xffffffff;
image2 &= 0xffffffff;
}
break;
default:
abort ();
}
if (FLOAT_WORDS_BIG_ENDIAN)
{
buf[0] = image3;
buf[1] = image2;
buf[2] = image1;
buf[3] = image0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
buf[0] = image0;
buf[1] = image1;
buf[2] = image2;
buf[3] = image3;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_ieee_quad (const struct real_format *fmt, REAL_VALUE_TYPE *r,
const long *buf)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image3, image2, image1, image0;
bool sign;
int exp;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image3 = buf[0];
image2 = buf[1];
image1 = buf[2];
image0 = buf[3];
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image0 = buf[0];
image1 = buf[1];
image2 = buf[2];
image3 = buf[3];
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image0 &= 0xffffffff;
image1 &= 0xffffffff;
image2 &= 0xffffffff;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = (image3 >> 31) & 1;
exp = (image3 >> 16) & 0x7fff;
image3 &= 0xffff;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp == 0)
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if ((image3 | image2 | image1 | image0) && fmt->has_denorm)
{
r->class = rvc_normal;
r->sign = sign;
r->exp = -16382 + (SIGNIFICAND_BITS - 112);
if (HOST_BITS_PER_LONG == 32)
{
r->sig[0] = image0;
r->sig[1] = image1;
r->sig[2] = image2;
r->sig[3] = image3;
}
else
{
r->sig[0] = (image1 << 31 << 1) | image0;
r->sig[1] = (image3 << 31 << 1) | image2;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
normalize (r);
}
else if (fmt->has_signed_zero)
r->sign = sign;
}
else if (exp == 32767 && (fmt->has_nans || fmt->has_inf))
{
if (image3 | image2 | image1 | image0)
{
r->class = rvc_nan;
r->sign = sign;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
r->signalling = ((image3 >> 15) & 1) ^ fmt->qnan_msb_set;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == 32)
{
r->sig[0] = image0;
r->sig[1] = image1;
r->sig[2] = image2;
r->sig[3] = image3;
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
else
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[0] = (image1 << 31 << 1) | image0;
r->sig[1] = (image3 << 31 << 1) | image2;
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
lshift_significand (r, r, SIGNIFICAND_BITS - 113);
}
else
{
r->class = rvc_inf;
r->sign = sign;
}
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
else
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
r->exp = exp - 16383 + 1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == 32)
{
r->sig[0] = image0;
r->sig[1] = image1;
r->sig[2] = image2;
r->sig[3] = image3;
}
else
{
r->sig[0] = (image1 << 31 << 1) | image0;
r->sig[1] = (image3 << 31 << 1) | image2;
}
lshift_significand (r, r, SIGNIFICAND_BITS - 113);
r->sig[SIGSZ-1] |= SIG_MSB;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format ieee_quad_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_ieee_quad,
decode_ieee_quad,
2,
1,
113,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
113,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-16381,
16384,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
127,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
true,
true,
true
};
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format mips_quad_format =
{
encode_ieee_quad,
decode_ieee_quad,
2,
1,
113,
113,
-16381,
16384,
127,
true,
true,
true,
true,
false
};
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Descriptions of VAX floating point formats can be found beginning at
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
http://h71000.www7.hp.com/doc/73FINAL/4515/4515pro_013.html#f_floating_point_format
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
The thing to remember is that they're almost IEEE, except for word
order, exponent bias, and the lack of infinities, nans, and denormals.
We don't implement the H_floating format here, simply because neither
the VAX or Alpha ports use it. */
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_vax_f (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_vax_f (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
static void encode_vax_d (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_vax_d (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
static void encode_vax_g (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_vax_g (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_vax_f (const struct real_format *fmt ATTRIBUTE_UNUSED, long *buf,
const REAL_VALUE_TYPE *r)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long sign, exp, sig, image;
sign = r->sign << 15;
switch (r->class)
{
case rvc_zero:
image = 0;
break;
case rvc_inf:
case rvc_nan:
image = 0xffff7fff | sign;
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
sig = (r->sig[SIGSZ-1] >> (HOST_BITS_PER_LONG - 24)) & 0x7fffff;
exp = r->exp + 128;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image = (sig << 16) & 0xffff0000;
image |= sign;
image |= exp << 7;
image |= sig >> 16;
break;
default:
abort ();
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
buf[0] = image;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_vax_f (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image = buf[0] & 0xffffffff;
int exp = (image >> 7) & 0xff;
memset (r, 0, sizeof (*r));
if (exp != 0)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = (image >> 15) & 1;
r->exp = exp - 128;
image = ((image & 0x7f) << 16) | ((image >> 16) & 0xffff);
r->sig[SIGSZ-1] = (image << (HOST_BITS_PER_LONG - 24)) | SIG_MSB;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_vax_d (const struct real_format *fmt ATTRIBUTE_UNUSED, long *buf,
const REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long image0, image1, sign = r->sign << 15;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
image0 = image1 = 0;
break;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_inf:
case rvc_nan:
image0 = 0xffff7fff | sign;
image1 = 0xffffffff;
break;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
/* Extract the significand into straight hi:lo. */
if (HOST_BITS_PER_LONG == 64)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image0 = r->sig[SIGSZ-1];
image1 = (image0 >> (64 - 56)) & 0xffffffff;
image0 = (image0 >> (64 - 56 + 1) >> 31) & 0x7fffff;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image0 = r->sig[SIGSZ-1];
image1 = r->sig[SIGSZ-2];
image1 = (image0 << 24) | (image1 >> 8);
image0 = (image0 >> 8) & 0xffffff;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Rearrange the half-words of the significand to match the
external format. */
image0 = ((image0 << 16) | (image0 >> 16)) & 0xffff007f;
image1 = ((image1 << 16) | (image1 >> 16)) & 0xffffffff;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Add the sign and exponent. */
image0 |= sign;
image0 |= (r->exp + 128) << 7;
break;
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
buf[0] = image1, buf[1] = image0;
else
buf[0] = image0, buf[1] = image1;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_vax_d (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long image0, image1;
int exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
image1 = buf[0], image0 = buf[1];
else
image0 = buf[0], image1 = buf[1];
image0 &= 0xffffffff;
image1 &= 0xffffffff;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
exp = (image0 >> 7) & 0xff;
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
if (exp != 0)
{
r->class = rvc_normal;
r->sign = (image0 >> 15) & 1;
r->exp = exp - 128;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Rearrange the half-words of the external format into
proper ascending order. */
image0 = ((image0 & 0x7f) << 16) | ((image0 >> 16) & 0xffff);
image1 = ((image1 & 0xffff) << 16) | ((image1 >> 16) & 0xffff);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == 64)
{
image0 = (image0 << 31 << 1) | image1;
image0 <<= 64 - 56;
image0 |= SIG_MSB;
r->sig[SIGSZ-1] = image0;
}
else
{
r->sig[SIGSZ-1] = image0;
r->sig[SIGSZ-2] = image1;
lshift_significand (r, r, 2*HOST_BITS_PER_LONG - 56);
r->sig[SIGSZ-1] |= SIG_MSB;
}
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_vax_g (const struct real_format *fmt ATTRIBUTE_UNUSED, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image0, image1, sign = r->sign << 15;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
image0 = image1 = 0;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_inf:
case rvc_nan:
image0 = 0xffff7fff | sign;
image1 = 0xffffffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
/* Extract the significand into straight hi:lo. */
if (HOST_BITS_PER_LONG == 64)
{
image0 = r->sig[SIGSZ-1];
image1 = (image0 >> (64 - 53)) & 0xffffffff;
image0 = (image0 >> (64 - 53 + 1) >> 31) & 0xfffff;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
image0 = r->sig[SIGSZ-1];
image1 = r->sig[SIGSZ-2];
image1 = (image0 << 21) | (image1 >> 11);
image0 = (image0 >> 11) & 0xfffff;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* Rearrange the half-words of the significand to match the
external format. */
image0 = ((image0 << 16) | (image0 >> 16)) & 0xffff000f;
image1 = ((image1 << 16) | (image1 >> 16)) & 0xffffffff;
/* Add the sign and exponent. */
image0 |= sign;
image0 |= (r->exp + 1024) << 4;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
break;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
default:
abort ();
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
buf[0] = image1, buf[1] = image0;
else
buf[0] = image0, buf[1] = image1;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_vax_g (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long image0, image1;
int exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
image1 = buf[0], image0 = buf[1];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image0 = buf[0], image1 = buf[1];
image0 &= 0xffffffff;
image1 &= 0xffffffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp = (image0 >> 4) & 0x7ff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp != 0)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = (image0 >> 15) & 1;
r->exp = exp - 1024;
/* Rearrange the half-words of the external format into
proper ascending order. */
image0 = ((image0 & 0xf) << 16) | ((image0 >> 16) & 0xffff);
image1 = ((image1 & 0xffff) << 16) | ((image1 >> 16) & 0xffff);
if (HOST_BITS_PER_LONG == 64)
{
image0 = (image0 << 31 << 1) | image1;
image0 <<= 64 - 53;
image0 |= SIG_MSB;
r->sig[SIGSZ-1] = image0;
}
else
{
r->sig[SIGSZ-1] = image0;
r->sig[SIGSZ-2] = image1;
lshift_significand (r, r, 64 - 53);
r->sig[SIGSZ-1] |= SIG_MSB;
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
}
}
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format vax_f_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_vax_f,
decode_vax_f,
2,
1,
24,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
24,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-127,
127,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
15,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
false,
false,
false,
false,
false
};
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format vax_d_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_vax_d,
decode_vax_d,
2,
1,
56,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
56,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-127,
127,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
15,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
false,
false,
false,
false,
false
};
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format vax_g_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_vax_g,
decode_vax_g,
2,
1,
53,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
53,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-1023,
1023,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
15,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
false,
false,
false,
false,
false
};
/* A good reference for these can be found in chapter 9 of
"ESA/390 Principles of Operation", IBM document number SA22-7201-01.
An on-line version can be found here:
http://publibz.boulder.ibm.com/cgi-bin/bookmgr_OS390/BOOKS/DZ9AR001/9.1?DT=19930923083613
*/
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_i370_single (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_i370_single (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
static void encode_i370_double (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_i370_double (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_i370_single (const struct real_format *fmt ATTRIBUTE_UNUSED,
long *buf, const REAL_VALUE_TYPE *r)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long sign, exp, sig, image;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = r->sign << 31;
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
{
case rvc_zero:
image = 0;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_inf:
case rvc_nan:
image = 0x7fffffff | sign;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
sig = (r->sig[SIGSZ-1] >> (HOST_BITS_PER_LONG - 24)) & 0xffffff;
exp = ((r->exp / 4) + 64) << 24;
image = sign | exp | sig;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
buf[0] = image;
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_i370_single (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long sign, sig, image = buf[0];
int exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = (image >> 31) & 1;
exp = (image >> 24) & 0x7f;
sig = image & 0xffffff;
memset (r, 0, sizeof (*r));
if (exp || sig)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
r->sign = sign;
r->exp = (exp - 64) * 4;
r->sig[SIGSZ-1] = sig << (HOST_BITS_PER_LONG - 24);
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_i370_double (const struct real_format *fmt ATTRIBUTE_UNUSED,
long *buf, const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long sign, exp, image_hi, image_lo;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sign = r->sign << 31;
switch (r->class)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_zero:
image_hi = image_lo = 0;
break;
case rvc_inf:
case rvc_nan:
image_hi = 0x7fffffff | sign;
image_lo = 0xffffffff;
break;
case rvc_normal:
if (HOST_BITS_PER_LONG == 64)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_hi = r->sig[SIGSZ-1];
image_lo = (image_hi >> (64 - 56)) & 0xffffffff;
image_hi = (image_hi >> (64 - 56 + 1) >> 31) & 0xffffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
else
{
image_hi = r->sig[SIGSZ-1];
image_lo = r->sig[SIGSZ-2];
image_lo = (image_lo >> 8) | (image_hi << 24);
image_hi >>= 8;
}
exp = ((r->exp / 4) + 64) << 24;
image_hi |= sign | exp;
break;
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
buf[0] = image_hi, buf[1] = image_lo;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
buf[0] = image_lo, buf[1] = image_hi;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_i370_double (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
unsigned long sign, image_hi, image_lo;
int exp;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (FLOAT_WORDS_BIG_ENDIAN)
image_hi = buf[0], image_lo = buf[1];
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image_lo = buf[0], image_hi = buf[1];
sign = (image_hi >> 31) & 1;
exp = (image_hi >> 24) & 0x7f;
image_hi &= 0xffffff;
image_lo &= 0xffffffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memset (r, 0, sizeof (*r));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp || image_hi || image_lo)
{
r->class = rvc_normal;
r->sign = sign;
r->exp = (exp - 64) * 4 + (SIGNIFICAND_BITS - 56);
if (HOST_BITS_PER_LONG == 32)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[0] = image_lo;
r->sig[1] = image_hi;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sig[0] = image_lo | (image_hi << 31 << 1);
normalize (r);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
const struct real_format i370_single_format =
{
encode_i370_single,
decode_i370_single,
16,
4,
6,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
6,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-64,
63,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
31,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
false,
false,
false, /* ??? The encoding does allow for "unnormals". */
false, /* ??? The encoding does allow for "unnormals". */
false
};
const struct real_format i370_double_format =
{
encode_i370_double,
decode_i370_double,
16,
4,
14,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
14,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-64,
63,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
63,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
false,
false,
false, /* ??? The encoding does allow for "unnormals". */
false, /* ??? The encoding does allow for "unnormals". */
false
};
/* The "twos-complement" c4x format is officially defined as
x = s(~s).f * 2**e
This is rather misleading. One must remember that F is signed.
A better description would be
x = -1**s * ((s + 1 + .f) * 2**e
So if we have a (4 bit) fraction of .1000 with a sign bit of 1,
that's -1 * (1+1+(-.5)) == -1.5. I think.
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
The constructions here are taken from Tables 5-1 and 5-2 of the
TMS320C4x User's Guide wherein step-by-step instructions for
conversion from IEEE are presented. That's close enough to our
internal representation so as to make things easy.
See http://www-s.ti.com/sc/psheets/spru063c/spru063c.pdf */
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_c4x_single (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_c4x_single (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
static void encode_c4x_extended (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_c4x_extended (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_c4x_single (const struct real_format *fmt ATTRIBUTE_UNUSED,
long *buf, const REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long image, exp, sig;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
{
case rvc_zero:
exp = -128;
sig = 0;
break;
case rvc_inf:
case rvc_nan:
exp = 127;
sig = 0x800000 - r->sign;
break;
case rvc_normal:
exp = r->exp - 1;
sig = (r->sig[SIGSZ-1] >> (HOST_BITS_PER_LONG - 24)) & 0x7fffff;
if (r->sign)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (sig)
sig = -sig;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp--;
sig |= 0x800000;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
image = ((exp & 0xff) << 24) | (sig & 0xffffff);
buf[0] = image;
}
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_c4x_single (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long image = buf[0];
unsigned long sig;
int exp, sf;
exp = (((image >> 24) & 0xff) ^ 0x80) - 0x80;
sf = ((image & 0xffffff) ^ 0x800000) - 0x800000;
memset (r, 0, sizeof (*r));
if (exp != -128)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
sig = sf & 0x7fffff;
if (sf < 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sign = 1;
if (sig)
sig = -sig;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
else
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sig = (sig << (HOST_BITS_PER_LONG - 24)) | SIG_MSB;
r->exp = exp + 1;
r->sig[SIGSZ-1] = sig;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_c4x_extended (const struct real_format *fmt ATTRIBUTE_UNUSED,
long *buf, const REAL_VALUE_TYPE *r)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long exp, sig;
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
switch (r->class)
{
case rvc_zero:
exp = -128;
sig = 0;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_inf:
case rvc_nan:
exp = 127;
sig = 0x80000000 - r->sign;
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
case rvc_normal:
exp = r->exp - 1;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
sig = r->sig[SIGSZ-1];
if (HOST_BITS_PER_LONG == 64)
sig = sig >> 1 >> 31;
sig &= 0x7fffffff;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (r->sign)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (sig)
sig = -sig;
else
exp--;
sig |= 0x80000000;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
break;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
default:
abort ();
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
exp = (exp & 0xff) << 24;
sig &= 0xffffffff;
if (FLOAT_WORDS_BIG_ENDIAN)
buf[0] = exp, buf[1] = sig;
else
buf[0] = sig, buf[0] = exp;
}
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_c4x_extended (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
unsigned long sig;
int exp, sf;
if (FLOAT_WORDS_BIG_ENDIAN)
exp = buf[0], sf = buf[1];
else
sf = buf[0], exp = buf[1];
exp = (((exp >> 24) & 0xff) & 0x80) - 0x80;
sf = ((sf & 0xffffffff) ^ 0x80000000) - 0x80000000;
memset (r, 0, sizeof (*r));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (exp != -128)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->class = rvc_normal;
sig = sf & 0x7fffffff;
if (sf < 0)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->sign = 1;
if (sig)
sig = -sig;
else
exp++;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
}
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
if (HOST_BITS_PER_LONG == 64)
sig = sig << 1 << 31;
sig |= SIG_MSB;
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
r->exp = exp + 1;
r->sig[SIGSZ-1] = sig;
}
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format c4x_single_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_c4x_single,
decode_c4x_single,
2,
1,
24,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
24,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-126,
128,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
-1,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
false,
false,
false,
false,
false
};
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format c4x_extended_format =
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
encode_c4x_extended,
decode_c4x_extended,
2,
1,
32,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
32,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-126,
128,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
-1,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
false,
false,
false,
false,
false
};
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
/* A synthetic "format" for internal arithmetic. It's the size of the
internal significand minus the two bits needed for proper rounding.
The encode and decode routines exist only to satisfy our paranoia
harness. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static void encode_internal (const struct real_format *fmt,
long *, const REAL_VALUE_TYPE *);
static void decode_internal (const struct real_format *,
REAL_VALUE_TYPE *, const long *);
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
encode_internal (const struct real_format *fmt ATTRIBUTE_UNUSED, long *buf,
const REAL_VALUE_TYPE *r)
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
memcpy (buf, r, sizeof (*r));
}
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
static void
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
decode_internal (const struct real_format *fmt ATTRIBUTE_UNUSED,
REAL_VALUE_TYPE *r, const long *buf)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
memcpy (r, buf, sizeof (*r));
}
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
const struct real_format real_internal_format =
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
{
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
encode_internal,
decode_internal,
2,
1,
SIGNIFICAND_BITS - 2,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
SIGNIFICAND_BITS - 2,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
-MAX_EXP,
MAX_EXP,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
-1,
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
true,
true,
false,
true,
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
true
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
};
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
/* Calculate the square root of X in mode MODE, and store the result
in R. Return TRUE if the operation does not raise an exception.
For details see "High Precision Division and Square Root",
Alan H. Karp and Peter Markstein, HP Lab Report 93-93-42, June
1993. http://www.hpl.hp.com/techreports/93/HPL-93-42.pdf. */
Enlist the FreeBSD-CURRENT users as testers of what is to become Gcc 3.1.0. These bits are taken from the FSF anoncvs repo on 1-Feb-2002 08:20 PST.
2002-02-01 18:16:02 +00:00
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
bool
real_sqrt (REAL_VALUE_TYPE *r, enum machine_mode mode,
const REAL_VALUE_TYPE *x)
Gcc 3.3.1-pre as of 2003-07-11.
2003-07-11 03:40:53 +00:00
{
Gcc 3.4.2 20040728.
2004-07-28 03:11:36 +00:00
static REAL_VALUE_TYPE halfthree;
static bool init = false;
REAL_VALUE_TYPE h, t, i;
int iter, exp;
/* sqrt(-0.0) is -0.0. */
if (real_isnegzero (x))
{
*r = *x;
return false;
}
/* Negative arguments return NaN. */
if (real_isneg (x))
{
get_canonical_qnan (r, 0);
return false;
}
/* Infinity and NaN return themselves. */
if (real_isinf (x) || real_isnan (x))
{
*r = *x;
return false;
}
if (!init)
{
do_add (&halfthree, &dconst1, &dconsthalf, 0);
init = true;
}
/* Initial guess for reciprocal sqrt, i. */
exp = real_exponent (x);
real_ldexp (&i, &dconst1, -exp/2);
/* Newton's iteration for reciprocal sqrt, i. */
for (iter = 0; iter < 16; iter++)
{
/* i(n+1) = i(n) * (1.5 - 0.5*i(n)*i(n)*x). */
do_multiply (&t, x, &i);
do_multiply (&h, &t, &i);
do_multiply (&t, &h, &dconsthalf);
do_add (&h, &halfthree, &t, 1);
do_multiply (&t, &i, &h);
/* Check for early convergence. */
if (iter >= 6 && real_identical (&i, &t))
break;
/* ??? Unroll loop to avoid copying. */
i = t;
}
/* Final iteration: r = i*x + 0.5*i*x*(1.0 - i*(i*x)). */
do_multiply (&t, x, &i);
do_multiply (&h, &t, &i);
do_add (&i, &dconst1, &h, 1);
do_multiply (&h, &t, &i);
do_multiply (&i, &dconsthalf, &h);
do_add (&h, &t, &i, 0);
/* ??? We need a Tuckerman test to get the last bit. */
real_convert (r, mode, &h);
return true;
}
/* Calculate X raised to the integer exponent N in mode MODE and store
the result in R. Return true if the result may be inexact due to
loss of precision. The algorithm is the classic "left-to-right binary
method" described in section 4.6.3 of Donald Knuth's "Seminumerical
Algorithms", "The Art of Computer Programming", Volume 2. */
bool
real_powi (REAL_VALUE_TYPE *r, enum machine_mode mode,
const REAL_VALUE_TYPE *x, HOST_WIDE_INT n)
{
unsigned HOST_WIDE_INT bit;
REAL_VALUE_TYPE t;
bool inexact = false;
bool init = false;
bool neg;
int i;
if (n == 0)
{
*r = dconst1;
return false;
}
else if (n < 0)
{
/* Don't worry about overflow, from now on n is unsigned. */
neg = true;
n = -n;
}
else
neg = false;
t = *x;
bit = (unsigned HOST_WIDE_INT) 1 << (HOST_BITS_PER_WIDE_INT - 1);
for (i = 0; i < HOST_BITS_PER_WIDE_INT; i++)
{
if (init)
{
inexact |= do_multiply (&t, &t, &t);
if (n & bit)
inexact |= do_multiply (&t, &t, x);
}
else if (n & bit)
init = true;
bit >>= 1;
}
if (neg)
inexact |= do_divide (&t, &dconst1, &t);
real_convert (r, mode, &t);
return inexact;
}
/* Round X to the nearest integer not larger in absolute value, i.e.
towards zero, placing the result in R in mode MODE. */
void
real_trunc (REAL_VALUE_TYPE *r, enum machine_mode mode,
const REAL_VALUE_TYPE *x)
{
do_fix_trunc (r, x);
if (mode != VOIDmode)
real_convert (r, mode, r);
}
/* Round X to the largest integer not greater in value, i.e. round
down, placing the result in R in mode MODE. */
void
real_floor (REAL_VALUE_TYPE *r, enum machine_mode mode,
const REAL_VALUE_TYPE *x)
{
do_fix_trunc (r, x);
if (! real_identical (r, x) && r->sign)
do_add (r, r, &dconstm1, 0);
if (mode != VOIDmode)
real_convert (r, mode, r);
}
/* Round X to the smallest integer not less then argument, i.e. round
up, placing the result in R in mode MODE. */
void
real_ceil (REAL_VALUE_TYPE *r, enum machine_mode mode,
const REAL_VALUE_TYPE *x)
{
do_fix_trunc (r, x);
if (! real_identical (r, x) && ! r->sign)
do_add (r, r, &dconst1, 0);
if (mode != VOIDmode)
real_convert (r, mode, r);
}
Reference in New Issue Copy Permalink