sysdeps/mips/fpu/fsetexcptflg.c

   1 /* Set floating-point environment exception handling.
   2    Copyright (C) 1998-2022 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, see
  17    <https://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv.h>
  20 #include <fpu_control.h>
  21
  22 int
  23 fesetexceptflag (const fexcept_t *flagp, int excepts)
  24 {
  25   fpu_control_t temp;
  26
  27   /* Get the current exceptions.  */
  28   _FPU_GETCW (temp);
  29
  30   /* Make sure the flags we want restored are legal.  */
  31   excepts &= FE_ALL_EXCEPT;
  32
  33   /* Now clear the bits called for, and copy them in from flagp. Note that
  34      we ignore all non-flag bits from *flagp, so they don't matter.  */
  35   temp = (temp & ~excepts) | (*flagp & excepts);
  36
  37   _FPU_SETCW (temp);
  38
  39   /* Success.  */
  40   return 0;
  41 }