1 /* Test exception in current environment.
2 Copyright (C) 2000-2022 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
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.
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.
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/>. */
22 fetestexcept (int excepts
)
24 union { unsigned long long l
; unsigned int sw
[2]; } s
;
26 /* Get the current status word. */
27 __asm__ ("fstd %%fr0,0(%1) \n\t"
28 "fldd 0(%1),%%fr0 \n\t"
29 : "=m" (s
.l
) : "r" (&s
.l
));
31 return (s
.sw
[0] >> 27) & excepts
& FE_ALL_EXCEPT
;
33 libm_hidden_def (fetestexcept
)