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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) 1997,99,2000,01 Free Software Foundation, Inc.
00003    This file is part of the GNU C Library.
00004    Contributed by Richard Henderson <rth@tamu.edu>, 1997.
00005 
00006    The GNU C Library is free software; you can redistribute it and/or
00007    modify it under the terms of the GNU Lesser General Public
00008    License as published by the Free Software Foundation; either
00009    version 2.1 of the License, or (at your option) any later version.
00010 
00011    The GNU C Library is distributed in the hope that it will be useful,
00012    but WITHOUT ANY WARRANTY; without even the implied warranty of
00013    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00014    Lesser General Public License for more details.
00015 
00016    You should have received a copy of the GNU Lesser General Public
00017    License along with the GNU C Library; if not, write to the Free
00018    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00019    02111-1307 USA.  */
00020 
00021 #include <fenv_libc.h>
00022 
00023 int
00024 __feupdateenv (const fenv_t *envp)
00025 {
00026   unsigned long int tmp;
00027 
00028   /* Get the current exception state.  */
00029   tmp = __ieee_get_fp_control ();
00030 
00031   /* Install new environment.  */
00032   fesetenv (envp);
00033 
00034   /* Raise the saved exception.  Incidently for us the implementation
00035      defined format of the values in objects of type fexcept_t is the
00036      same as the ones specified using the FE_* constants.  */
00037   feraiseexcept (tmp & SWCR_STATUS_MASK);
00038 
00039   /* Success.  */
00040   return 0;
00041 }
00042 
00043 #include <shlib-compat.h>
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);