glibc/sysdeps/loongarch/fpu/fclrexcpt.c
2022-07-26 12:35:12 -03:00

47 lines
1.4 KiB
C

/* Clear given exceptions in current floating-point environment.
Copyright (C) 2022 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library. If not, see
<https://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fenv_libc.h>
#include <fpu_control.h>
int
feclearexcept (int excepts)
{
int cw;
/* Mask out unsupported bits/exceptions. */
excepts &= FE_ALL_EXCEPT;
/* Read the complete control word. */
_FPU_GETCW (cw);
/* Clear exception flag bits and cause bits. If the cause bit is not
cleared, the next CTC instruction (just below) will re-generate the
exception. */
cw &= ~(excepts | (excepts << CAUSE_SHIFT));
/* Put the new data in effect. */
_FPU_SETCW (cw);
/* Success. */
return 0;
}
libm_hidden_def (feclearexcept)