sysdeps/loongarch/fpu/feholdexcpt.c

   1 /* Store current floating-point environment and clear exceptions.
   2    Copyright (C) 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 __feholdexcept (fenv_t *envp)
  24 {
  25   fpu_control_t cw;
  26
  27   /* Save the current state.  */
  28   _FPU_GETCW (cw);
  29   envp->__fp_control_register = cw;
  30
  31   /* Clear all exception enable bits and flags.  */
  32   cw &= ~(_FPU_MASK_V | _FPU_MASK_Z | _FPU_MASK_O | _FPU_MASK_U | _FPU_MASK_I
  33           | FE_ALL_EXCEPT);
  34   _FPU_SETCW (cw);
  35
  36   return 0;
  37 }
  38
  39 libm_hidden_def (__feholdexcept) weak_alias (__feholdexcept, feholdexcept)
  40 libm_hidden_weak (feholdexcept)