1 /* Clear given exceptions in current floating-point environment.
2 Copyright (C) 2022-2023 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/>. */
20 #include <fenv_libc.h>
21 #include <fpu_control.h>
24 feclearexcept (int excepts
)
28 /* Mask out unsupported bits/exceptions. */
29 excepts
&= FE_ALL_EXCEPT
;
31 /* Read the complete control word. */
34 /* Clear exception flag bits and cause bits. If the cause bit is not
35 cleared, the next CTC instruction (just below) will re-generate the
38 cw
&= ~(excepts
| (excepts
<< CAUSE_SHIFT
));
40 /* Put the new data in effect. */
46 libm_hidden_def (feclearexcept
)