| 1 | /* This is a software decimal floating point library. |
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| 2 | Copyright (C) 2007-2023 Free Software Foundation, Inc. |
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| 3 | |
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| 4 | This file is part of GCC. |
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| 5 | |
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| 6 | GCC is free software; you can redistribute it and/or modify it under |
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| 7 | the terms of the GNU General Public License as published by the Free |
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| 8 | Software Foundation; either version 3, or (at your option) any later |
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| 9 | version. |
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| 10 | |
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| 11 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY |
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| 12 | WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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| 13 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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| 14 | for more details. |
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| 15 | |
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| 16 | Under Section 7 of GPL version 3, you are granted additional |
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| 17 | permissions described in the GCC Runtime Library Exception, version |
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| 18 | 3.1, as published by the Free Software Foundation. |
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| 19 | |
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| 20 | You should have received a copy of the GNU General Public License and |
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| 21 | a copy of the GCC Runtime Library Exception along with this program; |
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| 22 | see the files COPYING3 and COPYING.RUNTIME respectively. If not, see |
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| 23 | <http://www.gnu.org/licenses/>. */ |
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| 24 | |
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| 25 | #include <string.h> |
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| 26 | |
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| 27 | #include "dconfig.h" |
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| 28 | #include "bid-dpd.h" |
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| 29 | #include "decimal128.h" |
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| 30 | |
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| 31 | void __host_to_ieee_128 (_Decimal128 in, decimal128 *out); |
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| 32 | void __ieee_to_host_128 (decimal128 in, _Decimal128 *out); |
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| 33 | |
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| 34 | /* The code for converting 128-bit values between DPD and BID presumes |
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| 35 | that the 64-bit halves of the 128-bit value are in little-endian |
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| 36 | order, so they need swapping on big-endian hosts. */ |
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| 37 | |
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| 38 | void |
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| 39 | __host_to_ieee_128 (_Decimal128 in, decimal128 *out) |
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| 40 | { |
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| 41 | #if WORDS_BIGENDIAN |
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| 42 | memcpy ((char *) out, (char *) &in + 8, 8); |
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| 43 | memcpy ((char *) out + 8, (char *) &in, 8); |
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| 44 | #else |
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| 45 | memcpy (dest: (char *) out, src: (char *) &in, n: 16); |
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| 46 | #endif |
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| 47 | } |
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| 48 | |
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| 49 | void |
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| 50 | __ieee_to_host_128 (decimal128 in, _Decimal128 *out) |
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| 51 | { |
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| 52 | #if WORDS_BIGENDIAN |
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| 53 | memcpy ((char *) out, (char *) &in + 8, 8); |
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| 54 | memcpy ((char *) out + 8, (char *) &in, 8); |
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| 55 | #else |
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| 56 | memcpy (dest: (char *) out, src: (char *) &in, n: 16); |
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| 57 | #endif |
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| 58 | } |
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| 59 | |
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