sysdeps/sh/sh4/fpu/feholdexcpt.c

   1 /* Store current floating-point environment and clear exceptions.
   2    Copyright (C) 1997-2019 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv.h>
  20 #include <fpu_control.h>
  21
  22 int
  23 __feholdexcept (fenv_t *envp)
  24 {
  25   fpu_control_t temp;
  26
  27   /* Store the environment.  */
  28   _FPU_GETCW (temp);
  29   envp->__fpscr = temp;
  30
  31   /* Clear the status flags.  */
  32   temp &= ~FE_ALL_EXCEPT;
  33
  34   /* Now set all exceptions to non-stop.  */
  35   temp &= ~(FE_ALL_EXCEPT << 5);
  36
  37   _FPU_SETCW (temp);
  38
  39   /* Success.  */
  40   return 0;
  41 }
  42 libm_hidden_def (__feholdexcept)
  43 weak_alias (__feholdexcept, feholdexcept)
  44 libm_hidden_weak (feholdexcept)