]>
Commit | Line | Data |
---|---|---|
5f72b005 | 1 | /* Disable floating-point exceptions. |
dff8da6b | 2 | Copyright (C) 2018-2024 Free Software Foundation, Inc. |
5f72b005 MH |
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 | |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
5f72b005 MH |
18 | |
19 | #include <fenv.h> | |
20 | #include <fenv_libc.h> | |
21 | #include <fpu_control.h> | |
22 | ||
23 | int | |
24 | fedisableexcept (int excepts) | |
25 | { | |
26 | unsigned int new_exc, old_exc; | |
27 | ||
28 | /* Get the current control word. */ | |
29 | _FPU_GETCW (new_exc); | |
30 | ||
31 | old_exc = (new_exc & ENABLE_MASK) >> ENABLE_SHIFT; | |
32 | ||
33 | /* Get the except disable mask. */ | |
34 | excepts &= FE_ALL_EXCEPT; | |
35 | new_exc &= ~(excepts << ENABLE_SHIFT); | |
36 | ||
37 | /* Put the new data in effect. */ | |
38 | _FPU_SETCW (new_exc); | |
39 | ||
40 | return old_exc; | |
41 | } |