1 | /* Enable floating-point exceptions. |
2 | Copyright (C) 2000-2024 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 | #include <fenv_private.h> |
21 | |
22 | int |
23 | feenableexcept (int excepts) |
24 | { |
25 | fenv_t new_exc, old_exc; |
26 | |
27 | __fenv_stfsr (new_exc); |
28 | |
29 | old_exc = (new_exc >> 18) & FE_ALL_EXCEPT; |
30 | new_exc |= (((fenv_t)excepts & FE_ALL_EXCEPT) << 18); |
31 | |
32 | __fenv_ldfsr (new_exc); |
33 | |
34 | return old_exc; |
35 | } |
36 | |