lib/fenv-env-update.c

/* Functions for controlling the floating-point environment as a whole.
   Copyright (C) 1997-2026 Free Software Foundation, Inc.

   This file is free software: you can redistribute it and/or modify
   it under the terms of the GNU Lesser General Public License as
   published by the Free Software Foundation; either version 2.1 of the
   License, or (at your option) any later version.

   This file is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public License
   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */

#include <config.h>

/* Specification.  */
#include <fenv.h>

int
feupdateenv (fenv_t const *envp)
{
  int previously_flagged_exceptions = fetestexcept (FE_ALL_EXCEPT);
  if (fesetenv (envp))
    return -1;
  if (feraiseexcept (previously_flagged_exceptions))
    return -1;
  return 0;
}