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authorTon Voon <tonvoon@users.sourceforge.net>2004-12-15 20:51:47 (GMT)
committerTon Voon <tonvoon@users.sourceforge.net>2004-12-15 20:51:47 (GMT)
commit6fff4bcdcf97412a6d1422991ea9fe5e8a203e75 (patch)
tree6494851815282f4b27829a7f10b8ca522aa7668e /m4/intdiv0.m4
parent82d1989d3245791c9fac22ca848f5497f261c10b (diff)
downloadmonitoring-plugins-6fff4bcdcf97412a6d1422991ea9fe5e8a203e75.tar.gz
Moving m4 files from lib/
git-svn-id: https://nagiosplug.svn.sourceforge.net/svnroot/nagiosplug/nagiosplug/trunk@1028 f882894a-f735-0410-b71e-b25c423dba1c
Diffstat (limited to 'm4/intdiv0.m4')
-rw-r--r--m4/intdiv0.m472
1 files changed, 72 insertions, 0 deletions
diff --git a/m4/intdiv0.m4 b/m4/intdiv0.m4
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1# intdiv0.m4 serial 1 (gettext-0.11.3)
2dnl Copyright (C) 2002 Free Software Foundation, Inc.
3dnl This file is free software, distributed under the terms of the GNU
4dnl General Public License. As a special exception to the GNU General
5dnl Public License, this file may be distributed as part of a program
6dnl that contains a configuration script generated by Autoconf, under
7dnl the same distribution terms as the rest of that program.
8
9dnl From Bruno Haible.
10
11AC_DEFUN([gt_INTDIV0],
12[
13 AC_REQUIRE([AC_PROG_CC])dnl
14 AC_REQUIRE([AC_CANONICAL_HOST])dnl
15
16 AC_CACHE_CHECK([whether integer division by zero raises SIGFPE],
17 gt_cv_int_divbyzero_sigfpe,
18 [
19 AC_TRY_RUN([
20#include <stdlib.h>
21#include <signal.h>
22
23static void
24#ifdef __cplusplus
25sigfpe_handler (int sig)
26#else
27sigfpe_handler (sig) int sig;
28#endif
29{
30 /* Exit with code 0 if SIGFPE, with code 1 if any other signal. */
31 exit (sig != SIGFPE);
32}
33
34int x = 1;
35int y = 0;
36int z;
37int nan;
38
39int main ()
40{
41 signal (SIGFPE, sigfpe_handler);
42/* IRIX and AIX (when "xlc -qcheck" is used) yield signal SIGTRAP. */
43#if (defined (__sgi) || defined (_AIX)) && defined (SIGTRAP)
44 signal (SIGTRAP, sigfpe_handler);
45#endif
46/* Linux/SPARC yields signal SIGILL. */
47#if defined (__sparc__) && defined (__linux__)
48 signal (SIGILL, sigfpe_handler);
49#endif
50
51 z = x / y;
52 nan = y / y;
53 exit (1);
54}
55], gt_cv_int_divbyzero_sigfpe=yes, gt_cv_int_divbyzero_sigfpe=no,
56 [
57 # Guess based on the CPU.
58 case "$host_cpu" in
59 alpha* | i[34567]86 | m68k | s390*)
60 gt_cv_int_divbyzero_sigfpe="guessing yes";;
61 *)
62 gt_cv_int_divbyzero_sigfpe="guessing no";;
63 esac
64 ])
65 ])
66 case "$gt_cv_int_divbyzero_sigfpe" in
67 *yes) value=1;;
68 *) value=0;;
69 esac
70 AC_DEFINE_UNQUOTED(INTDIV0_RAISES_SIGFPE, $value,
71 [Define if integer division by zero raises signal SIGFPE.])
72])