lib/fenv-env-update.c

   1 /* Functions for controlling the floating-point environment as a whole.
   2    Copyright (C) 1997-2024 Free Software Foundation, Inc.
   3
   4    This file is free software: you can redistribute it and/or modify
   5    it under the terms of the GNU Lesser General Public License as
   6    published by the Free Software Foundation; either version 2.1 of the
   7    License, or (at your option) any later version.
   8
   9    This file is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public License
  15    along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #include <config.h>
  18
  19 /* Specification.  */
  20 #include <fenv.h>
  21
  22 int
  23 feupdateenv (fenv_t const *envp)
  24 {
  25   int previously_flagged_exceptions = fetestexcept (FE_ALL_EXCEPT);
  26   if (fesetenv (envp))
  27     return -1;
  28   if (feraiseexcept (previously_flagged_exceptions))
  29     return -1;
  30   return 0;
  31 }