1 | /* Clear given exceptions in current floating-point environment. |
2 | Copyright (C) 1997-2024 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.h> |
20 | |
21 | int |
22 | __feclearexcept (int excepts) |
23 | { |
24 | fexcept_t fpsr; |
25 | |
26 | /* Mask out unsupported bits/exceptions. */ |
27 | excepts &= FE_ALL_EXCEPT; |
28 | |
29 | /* Fetch the fpu status register. */ |
30 | __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr)); |
31 | |
32 | /* Clear the relevant bits. */ |
33 | fpsr &= ~excepts; |
34 | |
35 | /* Put the new data in effect. */ |
36 | __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr)); |
37 | |
38 | /* Success. */ |
39 | return 0; |
40 | } |
41 | |
42 | #include <shlib-compat.h> |
43 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) |
44 | strong_alias (__feclearexcept, __old_feclearexcept) |
45 | compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1); |
46 | #endif |
47 | |
48 | libm_hidden_ver (__feclearexcept, feclearexcept) |
49 | versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2); |
50 | |