1  /* Disable floating-point exceptions.
       2     Copyright (C) 2000-2023 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_libc.h>
      20  
      21  int
      22  fedisableexcept (int excepts)
      23  {
      24    unsigned long int new_exc, old_exc;
      25  
      26    new_exc = __ieee_get_fp_control ();
      27  
      28    old_exc = (new_exc & SWCR_ENABLE_MASK) << SWCR_ENABLE_SHIFT;
      29    new_exc &= ~((excepts >> SWCR_ENABLE_SHIFT) & SWCR_ENABLE_MASK);
      30  
      31    __ieee_set_fp_control (new_exc);
      32  
      33    return old_exc;
      34  }