/* Store current floating-point environment and clear exceptions.

   Copyright (C) 1997-2018 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

   <http://www.gnu.org/licenses/>.  */

#include <fenv_libc.h>

#include <fpu_control.h>

int

__feholdexcept (fenv_t *envp)

{

  fenv_union_t old, new;

  /* Save the currently set exceptions.  */

  old.fenv = *envp = fegetenv_register ();

  /* Clear everything except for the rounding modes and non-IEEE arithmetic

     flag.  */

  new.l = old.l & 0xffffffff00000007LL;

  if (new.l == old.l)

    return 0;

  __TEST_AND_ENTER_NON_STOP (old.l, 0ULL);

  /* Put the new state in effect.  */

  fesetenv_register (new.fenv);

  return 0;

}

libm_hidden_def (__feholdexcept)

weak_alias (__feholdexcept, feholdexcept)

libm_hidden_weak (feholdexcept)