1/* This is a software decimal floating point library. 2 Copyright (C) 2007, 2009 Free Software Foundation, Inc. 3 4This file is part of GCC. 5 6GCC is free software; you can redistribute it and/or modify it under 7the terms of the GNU General Public License as published by the Free 8Software Foundation; either version 3, or (at your option) any later 9version. 10 11GCC is distributed in the hope that it will be useful, but WITHOUT ANY 12WARRANTY; without even the implied warranty of MERCHANTABILITY or 13FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14for more details. 15 16Under Section 7 of GPL version 3, you are granted additional 17permissions described in the GCC Runtime Library Exception, version 183.1, as published by the Free Software Foundation. 19 20You should have received a copy of the GNU General Public License and 21a copy of the GCC Runtime Library Exception along with this program; 22see the files COPYING3 and COPYING.RUNTIME respectively. If not, see 23<http://www.gnu.org/licenses/>. */ 24 25#include <string.h> 26 27#include "dconfig.h" 28#include "bid-dpd.h" 29#include "decimal128.h" 30 31void __host_to_ieee_128 (_Decimal128 in, decimal128 *out); 32void __ieee_to_host_128 (decimal128 in, _Decimal128 *out); 33 34/* The code for converting 128-bit values between DPD and BID presumes 35 that the 64-bit halves of the 128-bit value are in little-endian 36 order, so they need swapping on big-endian hosts. */ 37 38void 39__host_to_ieee_128 (_Decimal128 in, decimal128 *out) 40{ 41#if WORDS_BIGENDIAN 42 memcpy ((char *) out, (char *) &in + 8, 8); 43 memcpy ((char *) out + 8, (char *) &in, 8); 44#else 45 memcpy ((char *) out, (char *) &in, 16); 46#endif 47} 48 49void 50__ieee_to_host_128 (decimal128 in, _Decimal128 *out) 51{ 52#if WORDS_BIGENDIAN 53 memcpy ((char *) out, (char *) &in + 8, 8); 54 memcpy ((char *) out + 8, (char *) &in, 8); 55#else 56 memcpy ((char *) out, (char *) &in, 16); 57#endif 58} 59