math/test-fpucw.c

   1 /* Copyright (C) 2000 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Andreas Jaeger <aj@suse.de>, 2000.
   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 <fpu_control.h>
  20 #include <stdio.h>
  21
  22 int
  23 main (void)
  24 {
  25 #ifdef _FPU_GETCW
  26 /* Some architectures don't have _FPU_GETCW (e.g. Linux/Alpha).  */
  27   fpu_control_t cw;
  28
  29   _FPU_GETCW (cw);
  30
  31   cw &= ~_FPU_RESERVED;
  32
  33   if (cw != (_FPU_DEFAULT & ~_FPU_RESERVED))
  34     printf ("control word is 0x%lx but should be 0x%lx.\n",
  35             (long int) cw, (long int) (_FPU_DEFAULT & ~_FPU_RESERVED));
  36
  37   return cw != (_FPU_DEFAULT & ~_FPU_RESERVED);
  38
  39 #else
  40   return 0;
  41 #endif
  42 }