sysdeps/sparc/fpu/feupdateenv.c

   1 /* Install given floating-point environment and raise exceptions.
   2    Copyright (C) 1997-2014 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, see
  17    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv.h>
  20 #include <shlib-compat.h>
  21
  22 int
  23 __feupdateenv (const fenv_t *envp)
  24 {
  25   fexcept_t tmp;
  26
  27   /* Save current exceptions.  */
  28   __fenv_stfsr (tmp);
  29   tmp &= FE_ALL_EXCEPT;
  30
  31   /* Install new environment.  */
  32   fesetenv (envp);
  33
  34   /* Raise the safed exception.  Incidently for us the implementation
  35      defined format of the values in objects of type fexcept_t is the
  36      same as the ones specified using the FE_* constants.  */
  37   feraiseexcept ((int) tmp);
  38
  39   /* Success.  */
  40   return 0;
  41 }
  42
  43 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
  44 strong_alias (__feupdateenv, __old_feupdateenv)
  45 compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
  46 #endif
  47
  48 libm_hidden_ver (__feupdateenv, feupdateenv)
  49 versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);