/* 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);