sysdeps/hppa/fpu/fesetmode.c

   1 /* Install given floating-point control modes.  HPPA version.
   2    Copyright (C) 2016-2019 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    <http://www.gnu.org/licenses/>.  */
  18
  19 #include <fenv.h>
  20 #include <fpu_control.h>
  21
  22 #define FPU_CONTROL_BITS (_FPU_HPPA_MASK_RM | 0x20 | _FPU_HPPA_MASK_INT)
  23
  24 int
  25 fesetmode (const femode_t *modep)
  26 {
  27   fpu_control_t cw;
  28   _FPU_GETCW (cw);
  29   cw &= ~FPU_CONTROL_BITS;
  30   if (modep == FE_DFL_MODE)
  31     cw |= _FPU_DEFAULT;
  32   else
  33     cw |= *modep & FPU_CONTROL_BITS;
  34   _FPU_SETCW (cw);
  35   return 0;
  36 }