sysdeps/mips/fpu/fesetenv.c

   1 /* Install given floating-point environment.
   2    Copyright (C) 1998-2015 Free Software Foundation, Inc.
   3    This file is part of the GNU C Library.
   4    Contributed by Andreas Jaeger <aj@suse.de>, 1998.
   5
   6    The GNU C Library is free software; you can redistribute it and/or
   7    modify it under the terms of the GNU Lesser General Public
   8    License as published by the Free Software Foundation; either
   9    version 2.1 of the License, or (at your option) any later version.
  10
  11    The GNU C Library is distributed in the hope that it will be useful,
  12    but WITHOUT ANY WARRANTY; without even the implied warranty of
  13    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14    Lesser General Public License for more details.
  15
  16    You should have received a copy of the GNU Lesser General Public
  17    License along with the GNU C Library.  If not, see
  18    <http://www.gnu.org/licenses/>.  */
  19
  20 #include <fenv.h>
  21 #include <fpu_control.h>
  22
  23 int
  24 fesetenv (const fenv_t *envp)
  25 {
  26   fpu_control_t cw;
  27
  28   /* Read first current state to flush fpu pipeline.  */
  29   _FPU_GETCW (cw);
  30
  31   if (envp == FE_DFL_ENV)
  32     _FPU_SETCW (_FPU_DEFAULT);
  33   else if (envp == FE_NOMASK_ENV)
  34     _FPU_SETCW (_FPU_IEEE);
  35   else
  36     _FPU_SETCW (envp->__fp_control_register);
  37
  38   /* Success.  */
  39   return 0;
  40 }
  41
  42 libm_hidden_def (fesetenv)