1  /* Install given floating-point control modes.
       2     Copyright (C) 2020-2023 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.h>
      20  #include <fpu_control.h>
      21  
      22  int
      23  fesetmode (const femode_t *modep)
      24  {
      25    unsigned int fpcr;
      26  
      27    if (modep == FE_DFL_MODE)
      28      {
      29        fpcr = _FPU_DEFAULT;
      30      }
      31    else
      32      {
      33        /* No need to mask out reserved bits as they are IoW.  */
      34        fpcr = *modep;
      35      }
      36  
      37    _FPU_SETCW (fpcr);
      38  
      39    return 0;
      40  }