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1f205a47 | 1 | /* Clear given exceptions in current floating-point environment. |
dff8da6b | 2 | Copyright (C) 1997-2024 Free Software Foundation, Inc. |
1f205a47 UD |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
1f205a47 UD |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
1f205a47 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
1f205a47 UD |
18 | |
19 | #include <fenv_libc.h> | |
20 | ||
0413b54c | 21 | #undef feclearexcept |
63ae7b63 UD |
22 | int |
23 | __feclearexcept (int excepts) | |
1f205a47 | 24 | { |
18f2945a | 25 | fenv_union_t u, n; |
1f205a47 UD |
26 | |
27 | /* Get the current state. */ | |
28 | u.fenv = fegetenv_register (); | |
29 | ||
30 | /* Clear the relevant bits. */ | |
18f2945a | 31 | n.l = u.l & ~((-(excepts >> (31 - FPSCR_VX) & 1) & FE_ALL_INVALID) |
4a28b3ca | 32 | | (excepts & FPSCR_STICKY_BITS)); |
1f205a47 UD |
33 | |
34 | /* Put the new state in effect. */ | |
18f2945a AZ |
35 | if (u.l != n.l) |
36 | fesetenv_register (n.fenv); | |
63ae7b63 UD |
37 | |
38 | /* Success. */ | |
39 | return 0; | |
1f205a47 | 40 | } |
4eb8a862 RM |
41 | |
42 | #include <shlib-compat.h> | |
43 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) | |
63ae7b63 | 44 | strong_alias (__feclearexcept, __old_feclearexcept) |
4eb8a862 RM |
45 | compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1); |
46 | #endif | |
47 | ||
5b5b04d6 | 48 | libm_hidden_ver (__feclearexcept, feclearexcept) |
4eb8a862 | 49 | versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2); |