1/* Set given exception flags. x86_64 version.
2 Copyright (C) 2016-2022 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
21int
22fesetexcept (int excepts)
23{
24 unsigned int mxcsr;
25
26 __asm__ ("stmxcsr %0" : "=m" (*&mxcsr));
27 mxcsr |= excepts & FE_ALL_EXCEPT;
28 __asm__ ("ldmxcsr %0" : : "m" (*&mxcsr));
29
30 return 0;
31}
32

source code of glibc/sysdeps/x86_64/fpu/fesetexcept.c