1  /* Copyright (C) 2001-2023 Free Software Foundation, Inc.
       2  
       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 License as
       7     published by the Free Software Foundation; either version 2.1 of the
       8     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 <fpu_control.h>
      21  
      22  int
      23  fedisableexcept (int excepts)
      24  {
      25    fpu_control_t fpcr;
      26    fpu_control_t fpcr_new;
      27  
      28    _FPU_GETCW (fpcr);
      29    excepts &= FE_ALL_EXCEPT;
      30    fpcr_new = fpcr & ~(excepts << FE_EXCEPT_SHIFT);
      31  
      32    if (fpcr != fpcr_new)
      33      _FPU_SETCW (fpcr_new);
      34  
      35    return (fpcr >> FE_EXCEPT_SHIFT) & FE_ALL_EXCEPT;
      36  }