sysdeps/arm/fpu/fsetexcptflg.c

   1 /* Set floating-point environment exception handling.
   2    Copyright (C) 1997,98,99,2000,01 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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <fenv.h>
  21 #include <math.h>
  22 #include <fpu_control.h>
  23
  24 int
  25 __fesetexceptflag (const fexcept_t *flagp, int excepts)
  26 {
  27   fexcept_t temp;
  28
  29   /* Get the current environment.  */
  30   _FPU_GETCW (temp);
  31
  32   /* Set the desired exception mask.  */
  33   temp &= ~((excepts & FE_ALL_EXCEPT) << FE_EXCEPT_SHIFT);
  34   temp |= (*flagp & excepts & FE_ALL_EXCEPT) << FE_EXCEPT_SHIFT;
  35
  36   /* Save state back to the FPU.  */
  37   _FPU_SETCW (temp);
  38
  39   /* Success.  */
  40   return 0;
  41 }
  42
  43 #include <shlib-compat.h>
  44 #if SHLIB_COMPAT (libm, GLIBC_2_1, GLIBC_2_2)
  45 strong_alias (__fesetexceptflag, __old_fesetexceptflag)
  46 compat_symbol (libm, __old_fesetexceptflag, fesetexceptflag, GLIBC_2_1);
  47 #endif
  48
  49 versioned_symbol (libm, __fesetexceptflag, fesetexceptflag, GLIBC_2_2);