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glibc  2.9
feupdateenv.c
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00001 /* Install given floating-point environment and raise exceptions.
00002    Copyright (C) 1997, 1999, 2000 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <fenv.h>
00021 #include <shlib-compat.h>
00022 
00023 int
00024 __feupdateenv (const fenv_t *envp)
00025 {
00026   fexcept_t tmp;
00027 
00028   /* Save current exceptions.  */
00029   __fenv_stfsr (tmp);
00030   tmp &= FE_ALL_EXCEPT;
00031 
00032   /* Install new environment.  */
00033   fesetenv (envp);
00034 
00035   /* Raise the safed exception.  Incidently for us the implementation
00036      defined format of the values in objects of type fexcept_t is the
00037      same as the ones specified using the FE_* constants.  */
00038   feraiseexcept ((int) tmp);
00039 
00040   /* Success.  */
00041   return 0;
00042 }
00043 
00044 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
00045 strong_alias (__feupdateenv, __old_feupdateenv)
00046 compat_symbol (libm, __old_feupdateenv, feupdateenv, GLIBC_2_1);
00047 #endif
00048 
00049 versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);