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, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #include <fpu_control.h>
  21 #include <stdio.h>
  22
  23 int
  24 main (void)
  25 {
  26 #ifdef _FPU_GETCW
  27 /* Some architectures don't have _FPU_GETCW (e.g. Linux/Alpha).  */
  28   fpu_control_t cw;
  29
  30   _FPU_GETCW (cw);
  31
  32   cw &= ~_FPU_RESERVED;
  33
  34   if (cw != (_FPU_DEFAULT & ~_FPU_RESERVED))
  35     printf ("control word is 0x%lx but should be 0x%lx.\n",
  36             (long int) cw, (long int) (_FPU_DEFAULT & ~_FPU_RESERVED));
  37
  38   return cw != (_FPU_DEFAULT & ~_FPU_RESERVED);
  39
  40 #else
  41   return 0;
  42 #endif
  43 }