1 | /* Disable floating-point exceptions. |
2 | Copyright (C) 2018-2022 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.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 | } |
42 | |