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63551311 | 1 | /* Test exception in current environment. |
d614a753 | 2 | Copyright (C) 1997-2020 Free Software Foundation, Inc. |
63551311 UD |
3 | This file is part of the GNU C Library. |
4 | Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. | |
5 | ||
6 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
7 | modify it under the terms of the GNU Lesser General Public |
8 | License as published by the Free Software Foundation; either | |
9 | version 2.1 of the License, or (at your option) any later version. | |
63551311 UD |
10 | |
11 | The GNU C Library is distributed in the hope that it will be useful, | |
12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 14 | Lesser General Public License for more details. |
63551311 | 15 | |
41bdb6e2 | 16 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 17 | License along with the GNU C Library; if not, see |
5a82c748 | 18 | <https://www.gnu.org/licenses/>. */ |
63551311 UD |
19 | |
20 | #include <fenv.h> | |
85dd1003 UD |
21 | #include <unistd.h> |
22 | #include <dl-procinfo.h> | |
23 | #include <ldsodefs.h> | |
63551311 UD |
24 | |
25 | int | |
26 | fetestexcept (int excepts) | |
27 | { | |
b4b166af | 28 | short temp; |
85dd1003 | 29 | int xtemp = 0; |
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30 | |
31 | /* Get current exceptions. */ | |
32 | __asm__ ("fnstsw %0" : "=a" (temp)); | |
33 | ||
85dd1003 | 34 | /* If the CPU supports SSE we test the MXCSR as well. */ |
bf773019 | 35 | if (HAS_CPU_FEATURE (SSE)) |
85dd1003 UD |
36 | __asm__ ("stmxcsr %0" : "=m" (*&xtemp)); |
37 | ||
38 | return (temp | xtemp) & excepts & FE_ALL_EXCEPT; | |
63551311 | 39 | } |
9ff8d36f | 40 | libm_hidden_def (fetestexcept) |