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c9cf6dde | 1 | /* Store current representation for exceptions. |
2b778ceb | 2 | Copyright (C) 2001-2021 Free Software Foundation, Inc. |
c9cf6dde AJ |
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 | |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
c9cf6dde AJ |
18 | |
19 | #include <fenv.h> | |
20 | ||
21 | int | |
22 | fegetexceptflag (fexcept_t *flagp, int excepts) | |
23 | { | |
24 | fexcept_t temp; | |
25 | unsigned int mxscr; | |
26 | ||
27 | /* Get the current exceptions for the x87 FPU and SSE unit. */ | |
28 | __asm__ ("fnstsw %0\n" | |
29 | "stmxcsr %1" : "=m" (*&temp), "=m" (*&mxscr)); | |
30 | ||
31 | *flagp = (temp | mxscr) & FE_ALL_EXCEPT & excepts; | |
32 | ||
33 | /* Success. */ | |
34 | return 0; | |
35 | } |