sysdeps/mips/fpu/fclrexcpt.c

   1 /* Clear given exceptions in current floating-point environment.
   2    Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Jaeger <aj@arthur.rhein-neckar.de>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Library General Public License as
   8    published by the Free Software Foundation; either version 2 of the
   9    License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Library General Public License for more details.
  15
  16    You should have received a copy of the GNU Library General Public
  17    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19    Boston, MA 02111-1307, USA.  */
  20
  21 #include <fenv.h>
  22 #include <fpu_control.h>
  23
  24 int
  25 __feclearexcept (int excepts)
  26 {
  27   int cw;
  28
  29   /* Mask out unsupported bits/exceptions.  */
  30   excepts &= FE_ALL_EXCEPT;
  31
  32   /* Read the complete control word.  */
  33   _FPU_GETCW (cw);
  34
  35   /* Clear exception bits.  */
  36   cw &= ~excepts;
  37
  38   /* Put the new data in effect.  */
  39   _FPU_SETCW (cw);
  40
  41   /* Success.  */
  42   return 0;
  43 }
  44 strong_alias (__feclearexcept, __old_feclearexcept)
  45 symbol_version (__old_feclearexcept, feclearexcept, GLIBC_2.1);
  46 default_symbol_version (__feclearexcept, feclearexcept, GLIBC_2.2);