sysdeps/mips/fpu/fsetexcptflg.c

   1 /* Set floating-point environment exception handling.
   2    Copyright (C) 1998-2020 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, see
  18    <https://www.gnu.org/licenses/>.  */
  19
  20 #include <fenv.h>
  21 #include <fpu_control.h>
  22
  23 int
  24 fesetexceptflag (const fexcept_t *flagp, int excepts)
  25 {
  26   fpu_control_t temp;
  27
  28   /* Get the current exceptions.  */
  29   _FPU_GETCW (temp);
  30
  31   /* Make sure the flags we want restored are legal.  */
  32   excepts &= FE_ALL_EXCEPT;
  33
  34   /* Now clear the bits called for, and copy them in from flagp. Note that
  35      we ignore all non-flag bits from *flagp, so they don't matter.  */
  36   temp = (temp & ~excepts) | (*flagp & excepts);
  37
  38   _FPU_SETCW (temp);
  39
  40   /* Success.  */
  41   return 0;
  42 }