1 /* Set floating-point environment exception handling.
2 Copyright (C) 1997-2022 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
21 int
fesetexceptflag(const fexcept_t * flagp,int excepts)22 fesetexceptflag (const fexcept_t *flagp, int excepts)
23 {
24 fenv_t fpsr;
25
26 /* Get the current exception state. */
27 __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
28
29 fpsr &= ~(((fenv_t) excepts & FE_ALL_EXCEPT) << 13);
30
31 /* Set all the bits that were called for. */
32 fpsr |= ((*flagp & excepts & FE_ALL_EXCEPT) << 13);
33
34 /* And store it back. */
35 __asm__ __volatile__ ("mov.m ar.fpsr=%0" :: "r" (fpsr) : "memory");
36
37 /* Success. */
38 return 0;
39 }
40