/* Set floating-point environment exception handling.

   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.h>

#include <fpu_control.h>

#include <arm-features.h>

int

fesetexceptflag (const fexcept_t *flagp, int excepts)

{

  fpu_control_t fpscr, new_fpscr;

  /* Fail if a VFP unit isn't present unless nothing needs to be done.  */

  if (!ARM_HAVE_VFP)

    return (excepts != 0);

  _FPU_GETCW (fpscr);

  excepts &= FE_ALL_EXCEPT;

  /* Set the desired exception mask.  */

  new_fpscr = fpscr & ~excepts;

  new_fpscr |= *flagp & excepts;

  /* Write new exception flags if changed.  */

  if (new_fpscr != fpscr)

    _FPU_SETCW (new_fpscr);

  return 0;

}