108ada4469
* Makefile.in (libdecnumber_a_SOURCES): Drop decLibrary.c. * decUtility.c (__dec_byte_swap): Move from here .. * decLibrary.c: .. to here. From-SVN: r107802
102 lines
2.2 KiB
C
102 lines
2.2 KiB
C
/* Temporary library support for decimal floating point.
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Copyright (C) 2005 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 2, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING. If not, write to the Free
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Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#include "config.h"
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#include "decContext.h"
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#include "decimal128.h"
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#include "decimal64.h"
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#include "decimal32.h"
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void __host_to_ieee_32 (_Decimal32, decimal32 *);
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void __host_to_ieee_64 (_Decimal64, decimal64 *);
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void __host_to_ieee_128 (_Decimal128, decimal128 *);
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extern int isinfd32 (_Decimal32);
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extern int isinfd64 (_Decimal64);
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extern int isinfd128 (_Decimal128);
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extern void __dfp_enable_traps (void);
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extern void __dfp_raise (int exception __attribute__ ((unused)));
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int
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isinfd32 (_Decimal32 arg)
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{
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decNumber dn;
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decimal32 d32;
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__host_to_ieee_32 (arg, &d32);
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decimal32ToNumber (&d32, &dn);
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return (decNumberIsInfinite (&dn));
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}
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int
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isinfd64 (_Decimal64 arg)
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{
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decNumber dn;
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decimal64 d64;
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__host_to_ieee_64 (arg, &d64);
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decimal64ToNumber (&d64, &dn);
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return (decNumberIsInfinite (&dn));
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}
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int
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isinfd128 (_Decimal128 arg)
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{
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decNumber dn;
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decimal128 d128;
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__host_to_ieee_128 (arg, &d128);
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decimal128ToNumber (&d128, &dn);
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return (decNumberIsInfinite (&dn));
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}
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int __dfp_traps;
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void
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__dfp_enable_traps (void)
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{
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__dfp_traps = 1;
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}
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void
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__dfp_raise (int exception __attribute__ ((unused)))
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{
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raise (SIGFPE);
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}
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unsigned long
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__dec_byte_swap (unsigned long in)
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{
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unsigned long out;
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unsigned char *p = (unsigned char *) &out;
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union {
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unsigned long i;
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unsigned char b[4];
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} u;
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u.i = in;
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p[0] = u.b[3];
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p[1] = u.b[2];
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p[2] = u.b[1];
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p[3] = u.b[0];
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return out;
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}
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