libdecnumber/bid/host-ieee64.c

   1 /* This is a software decimal floating point library.
   2    Copyright (C) 2007 Free Software Foundation, Inc.
   3
   4 This file is part of GCC.
   5
   6 GCC is free software; you can redistribute it and/or modify it under
   7 the terms of the GNU General Public License as published by the Free
   8 Software Foundation; either version 2, or (at your option) any later
   9 version.
  10
  11 In addition to the permissions in the GNU General Public License, the
  12 Free Software Foundation gives you unlimited permission to link the
  13 compiled version of this file into combinations with other programs,
  14 and to distribute those combinations without any restriction coming
  15 from the use of this file.  (The General Public License restrictions
  16 do apply in other respects; for example, they cover modification of
  17 the file, and distribution when not linked into a combine
  18 executable.)
  19
  20 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  21 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  22 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  23 for more details.
  24
  25 You should have received a copy of the GNU General Public License
  26 along with GCC; see the file COPYING.  If not, write to the Free
  27 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  28 02110-1301, USA.  */
  29
  30 /* This implements IEEE 754R decimal floating point arithmetic, but
  31    does not provide a mechanism for setting the rounding mode, or for
  32    generating or handling exceptions.  Conversions between decimal
  33    floating point types and other types depend on C library functions.
  34
  35    Contributed by Ben Elliston  <bje@au.ibm.com>.  */
  36
  37 /* The intended way to use this file is to make two copies, add `#define '
  38    to one copy, then compile both copies and add them to libgcc.a.  */
  39
  40 #include <string.h>
  41 #include "bid-dpd.h"
  42 #include "decimal64.h"
  43
  44 void __host_to_ieee_64 (_Decimal64 in, decimal64 *out);
  45 void __ieee_to_host_64 (decimal64 in, _Decimal64 *out);
  46
  47 void
  48 __host_to_ieee_64 (_Decimal64 in, decimal64 *out)
  49 {
  50   memcpy ((char *) out, (char *) &in, 8);
  51 }
  52
  53 void
  54 __ieee_to_host_64 (decimal64 in, _Decimal64 *out)
  55 {
  56   memcpy ((char *) out, (char *) &in, 8);
  57 }