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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) 1998, 1999, 2000, 2002, 2004 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Contributed by Alexandre Oliva <aoliva@redhat.com>
00005    based on corresponding file in the MIPS port.
00006 
00007    The GNU C Library is free software; you can redistribute it and/or
00008    modify it under the terms of the GNU Lesser General Public
00009    License as published by the Free Software Foundation; either
00010    version 2.1 of the License, or (at your option) any later version.
00011 
00012    The GNU C Library is distributed in the hope that it will be useful,
00013    but WITHOUT ANY WARRANTY; without even the implied warranty of
00014    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00015    Lesser General Public License for more details.
00016 
00017    You should have received a copy of the GNU Lesser General Public
00018    License along with the GNU C Library; if not, write to the Free
00019    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00020    02111-1307 USA.  */
00021 
00022 #include <fenv.h>
00023 #include <fpu_control.h>
00024 #include <shlib-compat.h>
00025 
00026 int
00027 __feupdateenv (const fenv_t *envp)
00028 {
00029   int temp;
00030 
00031   /* Save current exceptions.  */
00032   _FPU_GETCW (temp);
00033   temp &= FE_ALL_EXCEPT;
00034 
00035   /* Install new environment.  */
00036   fesetenv (envp);
00037 
00038   /* Raise the safed exception.  Incidently for us the implementation
00039      defined format of the values in objects of type fexcept_t is the
00040      same as the ones specified using the FE_* constants.  */
00041   feraiseexcept (temp);
00042 
00043   /* Success.  */
00044   return 0;
00045 }
00046 
00047 versioned_symbol (libm, __feupdateenv, feupdateenv, GLIBC_2_2);