1 /* Software floating-point emulation.
3 Copyright (C) 1997-2022 Free Software Foundation, Inc.
4 This file is part of the GNU C Library.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library; if not, see
18 <https://www.gnu.org/licenses/>. */
23 long double _Q_neg(const long double a
)
32 #if (__BYTE_ORDER == __BIG_ENDIAN)
33 c
.words
[0] ^= (((UWtype
)1) << (W_TYPE_SIZE
- 1));
34 #elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 64)
35 c
.words
[1] ^= (((UWtype
)1) << (W_TYPE_SIZE
- 1));
36 #elif (__BYTE_ORDER == __LITTLE_ENDIAN) && (W_TYPE_SIZE == 32)
37 c
.words
[3] ^= (((UWtype
)1) << (W_TYPE_SIZE
- 1));
39 FP_DECL_Q(A
); FP_DECL_Q(C
);
41 FP_UNPACK_RAW_Q(A
, a
);
43 FP_PACK_RAW_Q(c
.ldbl
, C
);