111 lines
2.7 KiB
C
111 lines
2.7 KiB
C
/* Temporary library support for decimal floating point.
|
|
Copyright (C) 2005, 2006 Free Software Foundation, Inc.
|
|
|
|
This file is part of GCC.
|
|
|
|
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.
|
|
|
|
In addition to the permissions in the GNU General Public License,
|
|
the Free Software Foundation gives you unlimited permission to link
|
|
the compiled version of this file into combinations with other
|
|
programs, and to distribute those combinations without any
|
|
restriction coming from the use of this file. (The General Public
|
|
License restrictions do apply in other respects; for example, they
|
|
cover modification of the file, and distribution when not linked
|
|
into a combine executable.)
|
|
|
|
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.
|
|
|
|
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, 51 Franklin Street, Fifth Floor, Boston, MA
|
|
02110-1301, USA. */
|
|
|
|
#include "config.h"
|
|
#include "decContext.h"
|
|
#include "decimal128.h"
|
|
#include "decimal64.h"
|
|
#include "decimal32.h"
|
|
|
|
void __host_to_ieee_32 (_Decimal32, decimal32 *);
|
|
void __host_to_ieee_64 (_Decimal64, decimal64 *);
|
|
void __host_to_ieee_128 (_Decimal128, decimal128 *);
|
|
|
|
extern int isinfd32 (_Decimal32);
|
|
extern int isinfd64 (_Decimal64);
|
|
extern int isinfd128 (_Decimal128);
|
|
extern void __dfp_enable_traps (void);
|
|
extern void __dfp_raise (int exception __attribute__ ((unused)));
|
|
|
|
int
|
|
isinfd32 (_Decimal32 arg)
|
|
{
|
|
decNumber dn;
|
|
decimal32 d32;
|
|
|
|
__host_to_ieee_32 (arg, &d32);
|
|
decimal32ToNumber (&d32, &dn);
|
|
return (decNumberIsInfinite (&dn));
|
|
}
|
|
|
|
int
|
|
isinfd64 (_Decimal64 arg)
|
|
{
|
|
decNumber dn;
|
|
decimal64 d64;
|
|
|
|
__host_to_ieee_64 (arg, &d64);
|
|
decimal64ToNumber (&d64, &dn);
|
|
return (decNumberIsInfinite (&dn));
|
|
}
|
|
|
|
int
|
|
isinfd128 (_Decimal128 arg)
|
|
{
|
|
decNumber dn;
|
|
decimal128 d128;
|
|
|
|
__host_to_ieee_128 (arg, &d128);
|
|
decimal128ToNumber (&d128, &dn);
|
|
return (decNumberIsInfinite (&dn));
|
|
}
|
|
|
|
int __dfp_traps;
|
|
|
|
void
|
|
__dfp_enable_traps (void)
|
|
{
|
|
__dfp_traps = 1;
|
|
}
|
|
|
|
void
|
|
__dfp_raise (int exception __attribute__ ((unused)))
|
|
{
|
|
raise (SIGFPE);
|
|
}
|
|
|
|
uint32_t
|
|
__dec_byte_swap (uint32_t in)
|
|
{
|
|
uint32_t out = 0;
|
|
unsigned char *p = (unsigned char *) &out;
|
|
union {
|
|
uint32_t i;
|
|
unsigned char b[4];
|
|
} u;
|
|
|
|
u.i = in;
|
|
p[0] = u.b[3];
|
|
p[1] = u.b[2];
|
|
p[2] = u.b[1];
|
|
p[3] = u.b[0];
|
|
|
|
return out;
|
|
}
|