1  /* Install given floating-point environment and raise exceptions.
       2     Copyright (C) 2022-2023 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 <fpu_control.h>
      21  
      22  int
      23  __feupdateenv (const fenv_t *envp)
      24  {
      25    int temp;
      26  
      27    /* Save current exceptions.  */
      28    _FPU_GETCW (temp);
      29    temp &= FE_ALL_EXCEPT;
      30  
      31    /* Install new environment.  */
      32    __fesetenv (envp);
      33  
      34    /* Raise the saved exception.  Incidentally for us the implementation
      35       defined format of the values in objects of type fexcept_t is the
      36       same as the ones specified using the FE_* constants.  */
      37    __feraiseexcept (temp);
      38  
      39    /* Success.  */
      40    return 0;
      41  }
      42  libm_hidden_def (__feupdateenv) weak_alias (__feupdateenv, feupdateenv)
      43  libm_hidden_weak (feupdateenv)