sysdeps/sparc/fpu/feenablxcpt.c

   1 /* Enable floating-point exceptions.
   2    Copyright (C) 2000-2024 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 #include <fenv_private.h>
  21
  22 int
  23 feenableexcept (int excepts)
  24 {
  25   fenv_t new_exc, old_exc;
  26
  27   __fenv_stfsr (new_exc);
  28
  29   old_exc = (new_exc >> 18) & FE_ALL_EXCEPT;
  30   new_exc |= (((fenv_t)excepts & FE_ALL_EXCEPT) << 18);
  31
  32   __fenv_ldfsr (new_exc);
  33
  34   return old_exc;
  35 }