Mercurial > hg > CbC > CbC_gcc
comparison libdecnumber/bid/host-ieee128.c @ 0:a06113de4d67
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author | kent <kent@cr.ie.u-ryukyu.ac.jp> |
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date | Fri, 17 Jul 2009 14:47:48 +0900 |
parents | |
children | 04ced10e8804 |
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-1:000000000000 | 0:a06113de4d67 |
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1 /* This is a software decimal floating point library. | |
2 Copyright (C) 2007, 2009 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 3, or (at your option) any later | |
9 version. | |
10 | |
11 GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
12 WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
13 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
14 for more details. | |
15 | |
16 Under Section 7 of GPL version 3, you are granted additional | |
17 permissions described in the GCC Runtime Library Exception, version | |
18 3.1, as published by the Free Software Foundation. | |
19 | |
20 You should have received a copy of the GNU General Public License and | |
21 a copy of the GCC Runtime Library Exception along with this program; | |
22 see 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 | |
31 void __host_to_ieee_128 (_Decimal128 in, decimal128 *out); | |
32 void __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 | |
38 void | |
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 | |
49 void | |
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 } |