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/* Clear given exceptions in current floating-point environment.
Copyright (C) 1998, 1999, 2000, 2002, 2004 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Alexandre Oliva <aoliva@redhat.com>
based on corresponding file in the MIPS port.
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
<http://www.gnu.org/licenses/>. */
#include <fenv.h>
#include <fenv_libc.h>
#include <fpu_control.h>
#include <shlib-compat.h>
int
__feclearexcept (int excepts)
{
fpu_control_t 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. EF bits are cleared by
assigning 1 to them (and there's no way to set them); other bits
are copied normally. */
cw &= ~((excepts << CAUSE_SHIFT) | FE_ALL_EXCEPT);
cw |= excepts;
/* Put the new data in effect. */
_FPU_SETFCW (cw);
/* Success. */
return 0;
}
versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);
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