mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-12-27 04:52:05 +08:00
59 lines
1.8 KiB
C
59 lines
1.8 KiB
C
/* This is a software decimal floating point library.
|
|
Copyright (C) 2007, 2009 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 3, or (at your option) any later
|
|
version.
|
|
|
|
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.
|
|
|
|
Under Section 7 of GPL version 3, you are granted additional
|
|
permissions described in the GCC Runtime Library Exception, version
|
|
3.1, as published by the Free Software Foundation.
|
|
|
|
You should have received a copy of the GNU General Public License and
|
|
a copy of the GCC Runtime Library Exception along with this program;
|
|
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
|
|
<http://www.gnu.org/licenses/>. */
|
|
|
|
#include <string.h>
|
|
|
|
#include "dconfig.h"
|
|
#include "bid-dpd.h"
|
|
#include "decimal128.h"
|
|
|
|
void __host_to_ieee_128 (_Decimal128 in, decimal128 *out);
|
|
void __ieee_to_host_128 (decimal128 in, _Decimal128 *out);
|
|
|
|
/* The code for converting 128-bit values between DPD and BID presumes
|
|
that the 64-bit halves of the 128-bit value are in little-endian
|
|
order, so they need swapping on big-endian hosts. */
|
|
|
|
void
|
|
__host_to_ieee_128 (_Decimal128 in, decimal128 *out)
|
|
{
|
|
#if WORDS_BIGENDIAN
|
|
memcpy ((char *) out, (char *) &in + 8, 8);
|
|
memcpy ((char *) out + 8, (char *) &in, 8);
|
|
#else
|
|
memcpy ((char *) out, (char *) &in, 16);
|
|
#endif
|
|
}
|
|
|
|
void
|
|
__ieee_to_host_128 (decimal128 in, _Decimal128 *out)
|
|
{
|
|
#if WORDS_BIGENDIAN
|
|
memcpy ((char *) out, (char *) &in + 8, 8);
|
|
memcpy ((char *) out + 8, (char *) &in, 8);
|
|
#else
|
|
memcpy ((char *) out, (char *) &in, 16);
|
|
#endif
|
|
}
|