]>
Commit | Line | Data |
---|---|---|
bc89eac9 AJ |
1 | /* Software floating-point emulation. |
2 | Return !a | |
04277e02 | 3 | Copyright (C) 1997-2019 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/>. */ | |
bc89eac9 AJ |
21 | |
22 | #include "soft-fp.h" | |
23 | #include "quad.h" | |
24 | ||
25 | long double _Q_neg(const long double a) | |
26 | { | |
0d4ba8be DM |
27 | union { |
28 | long double ldbl; | |
29 | UWtype words[4]; | |
30 | } c; | |
31 | ||
32 | c.ldbl = a; | |
9c84384c | 33 | |
bc89eac9 | 34 | #if (__BYTE_ORDER == __BIG_ENDIAN) |
0d4ba8be | 35 | c.words[0] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); |
bc89eac9 | 36 | #elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 64) |
0d4ba8be | 37 | c.words[1] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); |
bc89eac9 | 38 | #elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 32) |
0d4ba8be | 39 | c.words[3] ^= (((UWtype)1) << (W_TYPE_SIZE - 1)); |
bc89eac9 AJ |
40 | #else |
41 | FP_DECL_Q(A); FP_DECL_Q(C); | |
42 | ||
2ae21ed2 | 43 | FP_UNPACK_RAW_Q(A, a); |
bc89eac9 | 44 | FP_NEG_Q(C, A); |
0d4ba8be | 45 | FP_PACK_RAW_Q(c.ldbl, C); |
bc89eac9 | 46 | #endif |
0d4ba8be | 47 | return c.ldbl; |
bc89eac9 | 48 | } |