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c72aa4a2 | 1 | /* Clear given exceptions in current floating-point environment. |
04277e02 | 2 | Copyright (C) 1997-2019 Free Software Foundation, Inc. |
c72aa4a2 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de> | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
3214b89b AJ |
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. | |
c72aa4a2 UD |
10 | |
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 | |
3214b89b | 14 | Lesser General Public License for more details. |
c72aa4a2 | 15 | |
3214b89b | 16 | You should have received a copy of the GNU Lesser General Public |
ab84e3ff PE |
17 | License along with the GNU C Library. If not, see |
18 | <http://www.gnu.org/licenses/>. */ | |
c72aa4a2 UD |
19 | |
20 | #include <fenv.h> | |
21 | ||
146bade7 UD |
22 | int |
23 | __feclearexcept (int excepts) | |
c72aa4a2 UD |
24 | { |
25 | fexcept_t fpsr; | |
26 | ||
27 | /* Mask out unsupported bits/exceptions. */ | |
28 | excepts &= FE_ALL_EXCEPT; | |
29 | ||
30 | /* Fetch the fpu status register. */ | |
31 | __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr)); | |
32 | ||
33 | /* Clear the relevant bits. */ | |
34 | fpsr &= ~excepts; | |
35 | ||
36 | /* Put the new data in effect. */ | |
37 | __asm__ __volatile__ ("fmove%.l %0,%/fpsr" : : "dm" (fpsr)); | |
146bade7 UD |
38 | |
39 | /* Success. */ | |
40 | return 0; | |
c72aa4a2 | 41 | } |
60446d7a RM |
42 | |
43 | #include <shlib-compat.h> | |
44 | #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2) | |
146bade7 | 45 | strong_alias (__feclearexcept, __old_feclearexcept) |
60446d7a RM |
46 | compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1); |
47 | #endif | |
48 | ||
5b5b04d6 | 49 | libm_hidden_ver (__feclearexcept, feclearexcept) |
60446d7a | 50 | versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2); |