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glibc  2.9
fclrexcpt.c
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00001 /* Clear given exceptions in current floating-point environment.
00002    Copyright (C) 1997,98,99,2000,01 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 <fpu_control.h>
00022 
00023 int
00024 __feclearexcept (int excepts)
00025 {
00026   unsigned long int temp;
00027 
00028   /* Mask out unsupported bits/exceptions.  */
00029   excepts &= FE_ALL_EXCEPT;
00030 
00031   /* Get the current floating point status. */
00032   _FPU_GETCW (temp);
00033 
00034   /* Clear the relevant bits.  */
00035   temp &= excepts ^ FE_ALL_EXCEPT;
00036 
00037   /* Put the new data in effect.  */
00038   _FPU_SETCW (temp);
00039 
00040   /* Success.  */
00041   return 0;
00042 }
00043 
00044 #include <shlib-compat.h>
00045 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
00046 strong_alias (__feclearexcept, __old_feclearexcept)
00047 compat_symbol (libm, __old_feclearexcept, feclearexcept, GLIBC_2_1);
00048 #endif
00049 
00050 versioned_symbol (libm, __feclearexcept, feclearexcept, GLIBC_2_2);