/* Raise given 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>

#undef feraiseexcept

int

__feraiseexcept (int excepts)

{

  fenv_union_t u;

  /* Raise exceptions represented by EXCEPTS.  It is the responsibility of

     the OS to ensure that if multiple exceptions occur they are fed back

     to this process in the proper way; this can happen in hardware,

     anyway (in particular, inexact with overflow or underflow). */

  /* Get the current state.  */

  u.fenv = fegetenv_register ();

  /* Add the exceptions */

  u.l = (u.l

	 | (excepts & FPSCR_STICKY_BITS)

	 /* Turn FE_INVALID into FE_INVALID_SOFTWARE.  */

	 | (excepts >> ((31 - FPSCR_VX) - (31 - FPSCR_VXSOFT))

	    & FE_INVALID_SOFTWARE));

  /* Store the new status word (along with the rest of the environment),

     triggering any appropriate exceptions.  */

  fesetenv_register (u.fenv);

  if ((excepts & FE_INVALID))

    {

      /* For some reason, some PowerPC chips (the 601, in particular)

	 don't have FE_INVALID_SOFTWARE implemented.  Detect this

	 case and raise FE_INVALID_SNAN instead.  */

      u.fenv = fegetenv_register ();

      if ((u.l & FE_INVALID) == 0)

	set_fpscr_bit (FPSCR_VXSNAN);

    }

  /* Success.  */

  return 0;

}

#include <shlib-compat.h>

#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)

strong_alias (__feraiseexcept, __old_feraiseexcept)

compat_symbol (libm, __old_feraiseexcept, feraiseexcept, GLIBC_2_1);

#endif

libm_hidden_def (__feraiseexcept)

libm_hidden_ver (__feraiseexcept, feraiseexcept)

versioned_symbol (libm, __feraiseexcept, feraiseexcept, GLIBC_2_2);