1  /* Store current floating-point environment and clear exceptions.
       2     Copyright (C) 2020-2023 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 <fenv_private.h>
      21  
      22  int
      23  __feholdexcept (fenv_t *envp)
      24  {
      25    unsigned int fpcr;
      26    unsigned int fpsr;
      27  
      28    _FPU_GETCW (fpcr);
      29    _FPU_GETS (fpsr);
      30  
      31    envp->__fpcr = fpcr;
      32    envp->__fpsr = fpsr;
      33  
      34    fpsr &= ~FE_ALL_EXCEPT;
      35  
      36    _FPU_SETCW (fpcr);
      37    _FPU_SETS (fpsr);
      38  
      39    return 0;
      40  }
      41  libm_hidden_def (__feholdexcept)
      42  weak_alias (__feholdexcept, feholdexcept)
      43  libm_hidden_weak (feholdexcept)