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1 | /* Software floating-point emulation. |
2 | Return !a | |
568035b7 | 3 | Copyright (C) 1997-2013 Free Software Foundation, Inc. |
bc89eac9 AJ |
4 | This file is part of the GNU C Library. |
5 | Contributed by Richard Henderson (rth@cygnus.com) and | |
6 | Jakub Jelinek (jj@ultra.linux.cz). | |
7 | ||
8 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
9 | modify it under the terms of the GNU Lesser General Public |
10 | License as published by the Free Software Foundation; either | |
11 | version 2.1 of the License, or (at your option) any later version. | |
bc89eac9 AJ |
12 | |
13 | The GNU C Library is distributed in the hope that it will be useful, | |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 16 | Lesser General Public License for more details. |
bc89eac9 | 17 | |
41bdb6e2 | 18 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 PE |
19 | License along with the GNU C Library; if not, see |
20 | <http://www.gnu.org/licenses/>. */ | |
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21 | |
22 | #include "soft-fp.h" | |
23 | #include "quad.h" | |
24 | ||
25 | long double _Q_neg(const long double a) | |
26 | { | |
27 | FP_DECL_EX; | |
28 | long double c = a; | |
9c84384c | 29 | |
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30 | #if (__BYTE_ORDER == __BIG_ENDIAN) |
31 | ((UWtype *)&c)[0] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); | |
32 | #elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 64) | |
33 | ((UWtype *)&c)[1] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); | |
34 | #elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 32) | |
35 | ((UWtype *)&c)[3] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); | |
36 | #else | |
37 | FP_DECL_Q(A); FP_DECL_Q(C); | |
38 | ||
39 | FP_UNPACK_Q(A, a); | |
40 | FP_NEG_Q(C, A); | |
41 | FP_PACK_Q(c, C); | |
42 | #endif | |
43 | FP_CLEAR_EXCEPTIONS; | |
44 | FP_HANDLE_EXCEPTIONS; | |
45 | return c; | |
46 | } |