sysdeps/ia64/fpu/feupdateenv.c

   1 /* Install given floating-point environment and raise exceptions.
   2    Copyright (C) 1997-2024 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
  21 int
  22 __feupdateenv (const fenv_t *envp)
  23 {
  24   fenv_t fpsr;
  25
  26
  27   /* Get the current exception state.  */
  28   __asm__ __volatile__ ("mov.m %0=ar.fpsr" : "=r" (fpsr));
  29
  30   /* Install new environment.  */
  31   __fesetenv (envp);
  32
  33   /* Raise the saved exceptions.  */
  34   __feraiseexcept ((int) (fpsr >> 13) & FE_ALL_EXCEPT);
  35
  36   /* Success.  */
  37   return 0;
  38 }
  39 libm_hidden_def (__feupdateenv)
  40 weak_alias (__feupdateenv, feupdateenv)
  41 libm_hidden_weak (feupdateenv)