1 | /* Disable 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 | |
21 | int |
22 | fedisableexcept (int excepts) |
23 | { |
24 | unsigned int old_exc, new_exc; |
25 | |
26 | /* Get the current control register contents. */ |
27 | __asm__ ("fmove%.l %!,%0" : "=dm" (new_exc)); |
28 | |
29 | old_exc = (new_exc >> 6) & FE_ALL_EXCEPT; |
30 | |
31 | excepts &= FE_ALL_EXCEPT; |
32 | |
33 | new_exc &= ~(excepts << 6); |
34 | __asm__ ("fmove%.l %0,%!" : : "dm" (new_exc)); |
35 | |
36 | return old_exc; |
37 | } |
38 | |