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_libc.h> |
20 | #include <fpu_control.h> |
21 | |
22 | int |
23 | feenableexcept (int excepts) |
24 | { |
25 | fexcept_t temp, old_exc, new_flags; |
26 | |
27 | _FPU_GETCW (temp); |
28 | old_exc = (temp & FPC_EXCEPTION_MASK) >> FPC_EXCEPTION_MASK_SHIFT; |
29 | new_flags = (temp | (((unsigned int) excepts & FE_ALL_EXCEPT) |
30 | << FPC_EXCEPTION_MASK_SHIFT)); |
31 | _FPU_SETCW (new_flags); |
32 | |
33 | return old_exc; |
34 | } |
35 | |