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1 | /* Store current floating-point environment and clear exceptions. | |
2 | Copyright (C) 2000-2019 Free Software Foundation, Inc. | |
3 | This file is part of the GNU C Library. | |
4 | Contributed by Andreas Jaeger <aj@suse.de>, 2000. | |
5 | ||
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. | |
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 | |
14 | Lesser General Public License for more details. | |
15 | ||
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/>. */ | |
19 | ||
20 | #include <fenv.h> | |
21 | #include <fpu_control.h> | |
22 | ||
23 | int | |
24 | __feholdexcept (fenv_t *envp) | |
25 | { | |
26 | fpu_control_t cw; | |
27 | ||
28 | /* Save the current state. */ | |
29 | _FPU_GETCW (cw); | |
30 | envp->__fp_control_register = cw; | |
31 | ||
32 | /* Clear all exception enable bits and flags. */ | |
33 | cw &= ~(_FPU_MASK_V|_FPU_MASK_Z|_FPU_MASK_O|_FPU_MASK_U|_FPU_MASK_I|FE_ALL_EXCEPT); | |
34 | _FPU_SETCW (cw); | |
35 | ||
36 | return 0; | |
37 | } | |
38 | ||
39 | libm_hidden_def (__feholdexcept) | |
40 | weak_alias (__feholdexcept, feholdexcept) | |
41 | libm_hidden_weak (feholdexcept) |