Back to index

glibc  2.9
test-fpucw.c
Go to the documentation of this file.
00001 /* Copyright (C) 2000 Free Software Foundation, Inc.
00002    This file is part of the GNU C Library.
00003    Contributed by Andreas Jaeger <aj@suse.de>, 2000.
00004 
00005    The GNU C Library is free software; you can redistribute it and/or
00006    modify it under the terms of the GNU Lesser General Public
00007    License as published by the Free Software Foundation; either
00008    version 2.1 of the License, or (at your option) any later version.
00009 
00010    The GNU C Library is distributed in the hope that it will be useful,
00011    but WITHOUT ANY WARRANTY; without even the implied warranty of
00012    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
00013    Lesser General Public License for more details.
00014 
00015    You should have received a copy of the GNU Lesser General Public
00016    License along with the GNU C Library; if not, write to the Free
00017    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
00018    02111-1307 USA.  */
00019 
00020 #include <fpu_control.h>
00021 #include <stdio.h>
00022 
00023 int
00024 main (void)
00025 {
00026 #ifdef _FPU_GETCW
00027 /* Some architectures don't have _FPU_GETCW (e.g. Linux/Alpha).  */
00028   fpu_control_t cw;
00029 
00030   _FPU_GETCW (cw);
00031 
00032   cw &= ~_FPU_RESERVED;
00033 
00034   if (cw != (_FPU_DEFAULT & ~_FPU_RESERVED))
00035     printf ("control word is 0x%lx but should be 0x%lx.\n",
00036            (long int) cw, (long int) (_FPU_DEFAULT & ~_FPU_RESERVED));
00037 
00038   return cw != (_FPU_DEFAULT & ~_FPU_RESERVED);
00039 
00040 #else
00041   return 0;
00042 #endif
00043 }