1 /* Store current representation for exceptions.
2 Copyright (C) 2001-2017 Free Software Foundation, Inc.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <http://www.gnu.org/licenses/>. */
17
18 #include <fenv.h>
19
20 int
fegetexceptflag(fexcept_t * flagp,int excepts)21 fegetexceptflag (fexcept_t *flagp, int excepts)
22 {
23 fexcept_t temp;
24 unsigned int mxscr;
25
26 /* Get the current exceptions for the x87 FPU and SSE unit. */
27 __asm__ ("fnstsw %0\n"
28 "stmxcsr %1" : "=m" (*&temp), "=m" (*&mxscr));
29
30 *flagp = (temp | mxscr) & FE_ALL_EXCEPT & excepts;
31
32 /* Success. */
33 return 0;
34 }
35