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freebsd-dev/contrib/gcc/real.h

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Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Definitions of floating-point access for GNU compiler.
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
Copyright (C) 1989, 91, 94, 96-98, 1999 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
This file is part of GNU CC.
GNU CC 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.
GNU CC 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.
You should have received a copy of the GNU General Public License
along with GNU CC; see the file COPYING. If not, write to
the Free Software Foundation, 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#ifndef REAL_H_INCLUDED
#define REAL_H_INCLUDED
/* Define codes for all the float formats that we know of. */
#define UNKNOWN_FLOAT_FORMAT 0
#define IEEE_FLOAT_FORMAT 1
#define VAX_FLOAT_FORMAT 2
#define IBM_FLOAT_FORMAT 3
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#define C4X_FLOAT_FORMAT 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
/* Default to IEEE float if not specified. Nearly all machines use it. */
#ifndef TARGET_FLOAT_FORMAT
#define TARGET_FLOAT_FORMAT IEEE_FLOAT_FORMAT
#endif
#ifndef HOST_FLOAT_FORMAT
#define HOST_FLOAT_FORMAT IEEE_FLOAT_FORMAT
#endif
#if TARGET_FLOAT_FORMAT == IEEE_FLOAT_FORMAT
#define REAL_INFINITY
#endif
/* If FLOAT_WORDS_BIG_ENDIAN and HOST_FLOAT_WORDS_BIG_ENDIAN are not defined
in the header files, then this implies the word-endianness is the same as
for integers. */
/* This is defined 0 or 1, like WORDS_BIG_ENDIAN. */
#ifndef FLOAT_WORDS_BIG_ENDIAN
#define FLOAT_WORDS_BIG_ENDIAN WORDS_BIG_ENDIAN
#endif
/* This is defined 0 or 1, unlike HOST_WORDS_BIG_ENDIAN. */
#ifndef HOST_FLOAT_WORDS_BIG_ENDIAN
#ifdef HOST_WORDS_BIG_ENDIAN
#define HOST_FLOAT_WORDS_BIG_ENDIAN 1
#else
#define HOST_FLOAT_WORDS_BIG_ENDIAN 0
#endif
#endif
/* Defining REAL_ARITHMETIC invokes a floating point emulator
that can produce a target machine format differing by more
than just endian-ness from the host's format. The emulator
is also used to support extended real XFmode. */
#ifndef LONG_DOUBLE_TYPE_SIZE
#define LONG_DOUBLE_TYPE_SIZE 64
#endif
#if (LONG_DOUBLE_TYPE_SIZE == 96) || (LONG_DOUBLE_TYPE_SIZE == 128)
#ifndef REAL_ARITHMETIC
#define REAL_ARITHMETIC
#endif
#endif
#ifdef REAL_ARITHMETIC
/* **** Start of software floating point emulator interface macros **** */
/* Support 80-bit extended real XFmode if LONG_DOUBLE_TYPE_SIZE
has been defined to be 96 in the tm.h machine file. */
#if (LONG_DOUBLE_TYPE_SIZE == 96)
#define REAL_IS_NOT_DOUBLE
#define REAL_ARITHMETIC
typedef struct {
HOST_WIDE_INT r[(11 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))];
} realvaluetype;
#define REAL_VALUE_TYPE realvaluetype
#else /* no XFmode support */
#if (LONG_DOUBLE_TYPE_SIZE == 128)
#define REAL_IS_NOT_DOUBLE
#define REAL_ARITHMETIC
typedef struct {
HOST_WIDE_INT r[(19 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))];
} realvaluetype;
#define REAL_VALUE_TYPE realvaluetype
#else /* not TFmode */
#if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
/* If no XFmode support, then a REAL_VALUE_TYPE is 64 bits wide
but it is not necessarily a host machine double. */
#define REAL_IS_NOT_DOUBLE
typedef struct {
HOST_WIDE_INT r[(7 + sizeof (HOST_WIDE_INT))/(sizeof (HOST_WIDE_INT))];
} realvaluetype;
#define REAL_VALUE_TYPE realvaluetype
#else
/* If host and target formats are compatible, then a REAL_VALUE_TYPE
is actually a host machine double. */
#define REAL_VALUE_TYPE double
#endif
#endif /* no TFmode support */
#endif /* no XFmode support */
extern int significand_size PROTO((enum machine_mode));
/* If emulation has been enabled by defining REAL_ARITHMETIC or by
setting LONG_DOUBLE_TYPE_SIZE to 96 or 128, then define macros so that
they invoke emulator functions. This will succeed only if the machine
files have been updated to use these macros in place of any
references to host machine `double' or `float' types. */
#ifdef REAL_ARITHMETIC
#undef REAL_ARITHMETIC
#define REAL_ARITHMETIC(value, code, d1, d2) \
earith (&(value), (code), &(d1), &(d2))
/* Declare functions in real.c. */
extern void earith PROTO((REAL_VALUE_TYPE *, int,
REAL_VALUE_TYPE *, REAL_VALUE_TYPE *));
extern REAL_VALUE_TYPE etrunci PROTO((REAL_VALUE_TYPE));
extern REAL_VALUE_TYPE etruncui PROTO((REAL_VALUE_TYPE));
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
extern REAL_VALUE_TYPE ereal_atof PROTO((const char *, enum machine_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
extern REAL_VALUE_TYPE ereal_negate PROTO((REAL_VALUE_TYPE));
extern HOST_WIDE_INT efixi PROTO((REAL_VALUE_TYPE));
extern unsigned HOST_WIDE_INT efixui PROTO((REAL_VALUE_TYPE));
extern void ereal_from_int PROTO((REAL_VALUE_TYPE *,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
HOST_WIDE_INT, HOST_WIDE_INT,
enum machine_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
extern void ereal_from_uint PROTO((REAL_VALUE_TYPE *,
unsigned HOST_WIDE_INT,
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
unsigned HOST_WIDE_INT,
enum machine_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
extern void ereal_to_int PROTO((HOST_WIDE_INT *, HOST_WIDE_INT *,
REAL_VALUE_TYPE));
extern REAL_VALUE_TYPE ereal_ldexp PROTO((REAL_VALUE_TYPE, int));
extern void etartdouble PROTO((REAL_VALUE_TYPE, long *));
extern void etarldouble PROTO((REAL_VALUE_TYPE, long *));
extern void etardouble PROTO((REAL_VALUE_TYPE, long *));
extern long etarsingle PROTO((REAL_VALUE_TYPE));
extern void ereal_to_decimal PROTO((REAL_VALUE_TYPE, char *));
extern int ereal_cmp PROTO((REAL_VALUE_TYPE, REAL_VALUE_TYPE));
extern int ereal_isneg PROTO((REAL_VALUE_TYPE));
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
extern REAL_VALUE_TYPE ereal_unto_float PROTO((long));
extern REAL_VALUE_TYPE ereal_unto_double PROTO((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
extern REAL_VALUE_TYPE ereal_from_float PROTO((HOST_WIDE_INT));
extern REAL_VALUE_TYPE ereal_from_double PROTO((HOST_WIDE_INT *));
#define REAL_VALUES_EQUAL(x, y) (ereal_cmp ((x), (y)) == 0)
/* true if x < y : */
#define REAL_VALUES_LESS(x, y) (ereal_cmp ((x), (y)) == -1)
#define REAL_VALUE_LDEXP(x, n) ereal_ldexp (x, n)
/* These return REAL_VALUE_TYPE: */
#define REAL_VALUE_RNDZINT(x) (etrunci (x))
#define REAL_VALUE_UNSIGNED_RNDZINT(x) (etruncui (x))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
extern REAL_VALUE_TYPE real_value_truncate PROTO ((enum machine_mode,
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
#define REAL_VALUE_TRUNCATE(mode, x) real_value_truncate (mode, x)
/* These return HOST_WIDE_INT: */
/* Convert a floating-point value to integer, rounding toward zero. */
#define REAL_VALUE_FIX(x) (efixi (x))
/* Convert a floating-point value to unsigned integer, rounding
toward zero. */
#define REAL_VALUE_UNSIGNED_FIX(x) (efixui (x))
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Convert ASCII string S to floating point in mode M.
Decimal input uses ATOF. Hexadecimal uses HTOF. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#define REAL_VALUE_ATOF ereal_atof
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
#define REAL_VALUE_HTOF ereal_atof
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#define REAL_VALUE_NEGATE ereal_negate
#define REAL_VALUE_MINUS_ZERO(x) \
((ereal_cmp (x, dconst0) == 0) && (ereal_isneg (x) != 0 ))
#define REAL_VALUE_TO_INT ereal_to_int
/* Here the cast to HOST_WIDE_INT sign-extends arguments such as ~0. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#define REAL_VALUE_FROM_INT(d, lo, hi, mode) \
ereal_from_int (&d, (HOST_WIDE_INT) (lo), (HOST_WIDE_INT) (hi), 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
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#define REAL_VALUE_FROM_UNSIGNED_INT(d, lo, hi, mode) \
ereal_from_uint (&d, lo, hi, 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
/* IN is a REAL_VALUE_TYPE. OUT is an array of longs. */
#if LONG_DOUBLE_TYPE_SIZE == 96
#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etarldouble ((IN), (OUT)))
#else
#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(IN, OUT) (etartdouble ((IN), (OUT)))
#endif
#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) (etardouble ((IN), (OUT)))
/* IN is a REAL_VALUE_TYPE. OUT is a long. */
#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) ((OUT) = etarsingle ((IN)))
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Inverse of REAL_VALUE_TO_TARGET_DOUBLE. */
#define REAL_VALUE_UNTO_TARGET_DOUBLE(d) (ereal_unto_double (d))
/* Inverse of REAL_VALUE_TO_TARGET_SINGLE. */
#define REAL_VALUE_UNTO_TARGET_SINGLE(f) (ereal_unto_float (f))
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* d is an array of HOST_WIDE_INT that holds a double precision
value in the target computer's floating point format. */
#define REAL_VALUE_FROM_TARGET_DOUBLE(d) (ereal_from_double (d))
/* f is a HOST_WIDE_INT containing a single precision target float value. */
#define REAL_VALUE_FROM_TARGET_SINGLE(f) (ereal_from_float (f))
/* Conversions to decimal ASCII string. */
#define REAL_VALUE_TO_DECIMAL(r, fmt, s) (ereal_to_decimal (r, s))
#endif /* REAL_ARITHMETIC defined */
/* **** End of software floating point emulator interface macros **** */
#else /* No XFmode or TFmode and REAL_ARITHMETIC not defined */
/* old interface */
#ifdef REAL_ARITHMETIC
/* Defining REAL_IS_NOT_DOUBLE breaks certain initializations
when REAL_ARITHMETIC etc. are not defined. */
/* Now see if the host and target machines use the same format.
If not, define REAL_IS_NOT_DOUBLE (even if we end up representing
reals as doubles because we have no better way in this cross compiler.)
This turns off various optimizations that can happen when we know the
compiler's float format matches the target's float format.
*/
#if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
#define REAL_IS_NOT_DOUBLE
#ifndef REAL_VALUE_TYPE
typedef struct {
HOST_WIDE_INT r[sizeof (double)/sizeof (HOST_WIDE_INT)];
} realvaluetype;
#define REAL_VALUE_TYPE realvaluetype
#endif /* no REAL_VALUE_TYPE */
#endif /* formats differ */
#endif /* 0 */
#endif /* emulator not used */
/* If we are not cross-compiling, use a `double' to represent the
floating-point value. Otherwise, use some other type
(probably a struct containing an array of longs). */
#ifndef REAL_VALUE_TYPE
#define REAL_VALUE_TYPE double
#else
#define REAL_IS_NOT_DOUBLE
#endif
#if HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT
/* Convert a type `double' value in host format first to a type `float'
value in host format and then to a single type `long' value which
is the bitwise equivalent of the `float' value. */
#ifndef REAL_VALUE_TO_TARGET_SINGLE
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
#define REAL_VALUE_TO_TARGET_SINGLE(IN, OUT) \
do { \
union { \
float f; \
HOST_WIDE_INT l; \
} u; \
if (sizeof(HOST_WIDE_INT) < sizeof(float)) \
abort(); \
u.l = 0; \
u.f = (IN); \
(OUT) = u.l; \
} while (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
#endif
/* Convert a type `double' value in host format to a pair of type `long'
values which is its bitwise equivalent, but put the two words into
proper word order for the target. */
#ifndef REAL_VALUE_TO_TARGET_DOUBLE
#define REAL_VALUE_TO_TARGET_DOUBLE(IN, OUT) \
Virgin import of gcc from EGCS 1.1.2
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do { \
union { \
REAL_VALUE_TYPE f; \
HOST_WIDE_INT l[2]; \
} u; \
if (sizeof(HOST_WIDE_INT) * 2 < sizeof(REAL_VALUE_TYPE)) \
abort(); \
u.l[0] = u.l[1] = 0; \
u.f = (IN); \
if (HOST_FLOAT_WORDS_BIG_ENDIAN == FLOAT_WORDS_BIG_ENDIAN) \
(OUT)[0] = u.l[0], (OUT)[1] = u.l[1]; \
else \
(OUT)[1] = u.l[0], (OUT)[0] = u.l[1]; \
} while (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
#endif
#endif /* HOST_FLOAT_FORMAT == TARGET_FLOAT_FORMAT */
/* In this configuration, double and long double are the same. */
#ifndef REAL_VALUE_TO_TARGET_LONG_DOUBLE
#define REAL_VALUE_TO_TARGET_LONG_DOUBLE(a, b) REAL_VALUE_TO_TARGET_DOUBLE (a, b)
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Compare two floating-point objects for bitwise identity.
This is not the same as comparing for equality on IEEE hosts:
-0.0 equals 0.0 but they are not identical, and conversely
two NaNs might be identical but they cannot be equal. */
#define REAL_VALUES_IDENTICAL(x, y) \
(!bcmp ((char *) &(x), (char *) &(y), sizeof (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
/* Compare two floating-point values for equality. */
#ifndef REAL_VALUES_EQUAL
#define REAL_VALUES_EQUAL(x, y) ((x) == (y))
#endif
/* Compare two floating-point values for less than. */
#ifndef REAL_VALUES_LESS
#define REAL_VALUES_LESS(x, y) ((x) < (y))
#endif
/* Truncate toward zero to an integer floating-point value. */
#ifndef REAL_VALUE_RNDZINT
#define REAL_VALUE_RNDZINT(x) ((double) ((int) (x)))
#endif
/* Truncate toward zero to an unsigned integer floating-point value. */
#ifndef REAL_VALUE_UNSIGNED_RNDZINT
#define REAL_VALUE_UNSIGNED_RNDZINT(x) ((double) ((unsigned int) (x)))
#endif
/* Convert a floating-point value to integer, rounding toward zero. */
#ifndef REAL_VALUE_FIX
#define REAL_VALUE_FIX(x) ((int) (x))
#endif
/* Convert a floating-point value to unsigned integer, rounding
toward zero. */
#ifndef REAL_VALUE_UNSIGNED_FIX
#define REAL_VALUE_UNSIGNED_FIX(x) ((unsigned int) (x))
#endif
/* Scale X by Y powers of 2. */
#ifndef REAL_VALUE_LDEXP
#define REAL_VALUE_LDEXP(x, y) ldexp (x, y)
extern double ldexp ();
#endif
/* Convert the string X to a floating-point value. */
#ifndef REAL_VALUE_ATOF
#if 1
/* Use real.c to convert decimal numbers to binary, ... */
REAL_VALUE_TYPE ereal_atof ();
#define REAL_VALUE_ATOF(x, s) ereal_atof (x, s)
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Could use ereal_atof here for hexadecimal floats too, but real_hex_to_f
is OK and it uses faster native fp arithmetic. */
/* #define REAL_VALUE_HTOF(x, s) ereal_atof (x, s) */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be 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
/* ... or, if you like the host computer's atof, go ahead and use it: */
#define REAL_VALUE_ATOF(x, s) atof (x)
#if defined (MIPSEL) || defined (MIPSEB)
/* MIPS compiler can't handle parens around the function name.
This problem *does not* appear to be connected with any
macro definition for atof. It does not seem there is one. */
extern double atof ();
#else
extern double (atof) ();
#endif
#endif
#endif
Virgin import of the GCC 2.95.1 compilers
1999-10-16 06:09:09 +00:00
/* Hexadecimal floating constant input for use with host computer's
fp arithmetic. */
#ifndef REAL_VALUE_HTOF
extern REAL_VALUE_TYPE real_hex_to_f PROTO((char *, enum machine_mode));
#define REAL_VALUE_HTOF(s,m) real_hex_to_f(s,m)
#endif
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Negate the floating-point value X. */
#ifndef REAL_VALUE_NEGATE
#define REAL_VALUE_NEGATE(x) (- (x))
#endif
/* Truncate the floating-point value X to mode MODE. This is correct only
for the most common case where the host and target have objects of the same
size and where `float' is SFmode. */
/* Don't use REAL_VALUE_TRUNCATE directly--always call real_value_truncate. */
Virgin import of gcc from EGCS 1.1.2
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extern REAL_VALUE_TYPE real_value_truncate PROTO((enum machine_mode, 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
#ifndef REAL_VALUE_TRUNCATE
#define REAL_VALUE_TRUNCATE(mode, x) \
(GET_MODE_BITSIZE (mode) == sizeof (float) * HOST_BITS_PER_CHAR \
? (float) (x) : (x))
#endif
/* Determine whether a floating-point value X is infinite. */
#ifndef REAL_VALUE_ISINF
#define REAL_VALUE_ISINF(x) (target_isinf (x))
#endif
/* Determine whether a floating-point value X is a NaN. */
#ifndef REAL_VALUE_ISNAN
#define REAL_VALUE_ISNAN(x) (target_isnan (x))
#endif
/* Determine whether a floating-point value X is negative. */
#ifndef REAL_VALUE_NEGATIVE
#define REAL_VALUE_NEGATIVE(x) (target_negative (x))
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
extern int target_isnan PROTO ((REAL_VALUE_TYPE));
extern int target_isinf PROTO ((REAL_VALUE_TYPE));
extern int target_negative PROTO ((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
/* Determine whether a floating-point value X is minus 0. */
#ifndef REAL_VALUE_MINUS_ZERO
#define REAL_VALUE_MINUS_ZERO(x) ((x) == 0 && REAL_VALUE_NEGATIVE (x))
#endif
/* Constant real values 0, 1, 2, and -1. */
extern REAL_VALUE_TYPE dconst0;
extern REAL_VALUE_TYPE dconst1;
extern REAL_VALUE_TYPE dconst2;
extern REAL_VALUE_TYPE dconstm1;
/* Union type used for extracting real values from CONST_DOUBLEs
or putting them in. */
union real_extract
{
REAL_VALUE_TYPE d;
HOST_WIDE_INT i[sizeof (REAL_VALUE_TYPE) / sizeof (HOST_WIDE_INT)];
};
/* For a CONST_DOUBLE:
The usual two ints that hold the value.
For a DImode, that is all there are;
and CONST_DOUBLE_LOW is the low-order word and ..._HIGH the high-order.
For a float, the number of ints varies,
and CONST_DOUBLE_LOW is the one that should come first *in memory*.
So use &CONST_DOUBLE_LOW(r) as the address of an array of ints. */
#define CONST_DOUBLE_LOW(r) XWINT (r, 2)
#define CONST_DOUBLE_HIGH(r) XWINT (r, 3)
/* Link for chain of all CONST_DOUBLEs in use in current function. */
#define CONST_DOUBLE_CHAIN(r) XEXP (r, 1)
/* The MEM which represents this CONST_DOUBLE's value in memory,
or const0_rtx if no MEM has been made for it yet,
or cc0_rtx if it is not on the chain. */
#define CONST_DOUBLE_MEM(r) XEXP (r, 0)
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Given a CONST_DOUBLE in FROM, store into TO the value it represents. */
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
/* Function to return a real value (not a tree node)
from a given integer constant. */
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
union tree_node;
REAL_VALUE_TYPE real_value_from_int_cst PROTO ((union tree_node *,
union tree_node *));
Import of unmodified (but trimmed) gcc-2.7.2. The bigger parts of the non-i386, non-unix, and generatable files have been trimmed, but can easily be added in later if needed. gcc-2.7.2.1 will follow shortly, it's a very small delta to this and it's handy to have both available for reference for such little cost. The freebsd-specific changes will then be committed, and once the dust has settled, the bmakefiles will be committed to use this code.
1996-09-18 05:35:50 +00:00
#define REAL_VALUE_FROM_CONST_DOUBLE(to, from) \
do { union real_extract u; \
bcopy ((char *) &CONST_DOUBLE_LOW ((from)), (char *) &u, sizeof u); \
to = u.d; } while (0)
/* Return a CONST_DOUBLE with value R and mode M. */
#define CONST_DOUBLE_FROM_REAL_VALUE(r, m) immed_real_const_1 (r, m)
extern struct rtx_def *immed_real_const_1 PROTO((REAL_VALUE_TYPE,
enum machine_mode));
/* Convert a floating point value `r', that can be interpreted
as a host machine float or double, to a decimal ASCII string `s'
using printf format string `fmt'. */
#ifndef REAL_VALUE_TO_DECIMAL
#define REAL_VALUE_TO_DECIMAL(r, fmt, s) (sprintf (s, fmt, r))
#endif
Virgin import of gcc from EGCS 1.1.2
1999-08-26 09:30:50 +00:00
/* Replace R by 1/R in the given machine mode, if the result is exact. */
extern int exact_real_inverse PROTO((enum machine_mode, REAL_VALUE_TYPE *));
extern void debug_real PROTO ((REAL_VALUE_TYPE));
/* In varasm.c */
extern void assemble_real PROTO ((REAL_VALUE_TYPE,
enum machine_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
#endif /* Not REAL_H_INCLUDED */
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