1 /* Clear given exceptions in current floating-point environment.
2 Copyright (C) 1997-2022 Free Software Foundation, Inc.
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
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.
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
13 Lesser General Public License for more details.
14
15 You should have received a copy of the GNU Lesser General Public
16 License along with the GNU C Library. If not, see
17 <https://www.gnu.org/licenses/>. */
18
19 #include <fenv_libc.h>
20
21 int
__feclearexcept(int excepts)22 __feclearexcept (int excepts)
23 {
24 unsigned long int swcr;
25
26 /* Get the current state. */
27 swcr = __ieee_get_fp_control ();
28
29 /* Clear the relevant bits. */
30 swcr &= ~((unsigned long int) excepts & SWCR_STATUS_MASK);
31
32 /* Put the new state in effect. */
33 __ieee_set_fp_control (swcr);
34
35 /* Success. */
36 return 0;
37 }
38
39 #include <shlib-compat.h>
40 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
41 strong_alias (__feclearexcept, __old_feclearexcept)
42 compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
43 #endif
44
45 libm_hidden_ver (__feclearexcept, feclearexcept)
46 versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);
47