sysdeps/mips/fpu/fsetexcptflg.c

   1 /* Set floating-point environment exception handling.
   2    Copyright (C) 1998, 1999, 2000, 2002 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Hartvig Ekner <hartvige@mips.com>, 2002.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the 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    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library; if not, write to the Free
  18    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  19    02111-1307 USA.  */
  20
  21 #include <fenv.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 exceptions.  */
  30   _FPU_GETCW (temp);
  31
  32   /* Make sure the flags we want restored are legal.  */
  33   excepts &= FE_ALL_EXCEPT;
  34
  35   /* Now clear the bits called for, and copy them in from flagp. Note that
  36      we ignore all non-flag bits from *flagp, so they don't matter.  */
  37   temp = (temp & ~excepts) | (*flagp & excepts);
  38
  39   _FPU_SETCW (temp);
  40
  41   /* Success.  */
  42   return 0;
  43 }