glibc/sysdeps/m68k/fpu/feupdateenv.c

/* Install given floating-point environment and raise exceptions.
   Copyright (C) 1997,99,2000,01 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Andreas Schwab <schwab@issan.informatik.uni-dortmund.de>

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Library General Public License as
   published by the Free Software Foundation; either version 2 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
   Library General Public License for more details.

   You should have received a copy of the GNU Library General Public
   License along with the GNU C Library; see the file COPYING.LIB.  If not,
   write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */

#include <fenv.h>

int
__feupdateenv (const fenv_t *envp)
{
  fexcept_t fpsr;

  /* Save current exceptions.  */
  __asm__ ("fmove%.l %/fpsr,%0" : "=dm" (fpsr));
  fpsr &= FE_ALL_EXCEPT;

  /* Install new environment.  */
  fesetenv (envp);

  /* Raise the saved exception.  Incidently for us the implementation
     defined format of the values in objects of type fexcept_t is the
     same as the ones specified using the FE_* constants.  */
  feraiseexcept ((int) fpsr);

  /* Success.  */
  return 0;
}

#include <shlib-compat.h>
#if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
strong_alias (__feupdateenv, __old_feupdateenv)
compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
#endif

versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);