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authorThorsten Kukuk <kukuk@thkukuk.de>2005-08-18 12:59:47 +0000
committerThorsten Kukuk <kukuk@thkukuk.de>2005-08-18 12:59:47 +0000
commit169206343fcdd18dd94341eaa4b4e03f9d598eae (patch)
tree429f55564f3ece842138c3b9759ec372d01c3d8a /m4/intdiv0.m4
parent63411b1347ff4534a6cfdf8df0acdd4a581ffb8b (diff)
Relevant BUGIDs: none
Purpose of commit: new feature Commit summary: --------------- Add gettext support.
Diffstat (limited to 'm4/intdiv0.m4')
-rw-r--r--m4/intdiv0.m470
1 files changed, 70 insertions, 0 deletions
diff --git a/m4/intdiv0.m4 b/m4/intdiv0.m4
new file mode 100644
index 00000000..b8d78176
--- /dev/null
+++ b/m4/intdiv0.m4
@@ -0,0 +1,70 @@
+# intdiv0.m4 serial 1 (gettext-0.11.3)
+dnl Copyright (C) 2002 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+dnl From Bruno Haible.
+
+AC_DEFUN([gt_INTDIV0],
+[
+ AC_REQUIRE([AC_PROG_CC])dnl
+ AC_REQUIRE([AC_CANONICAL_HOST])dnl
+
+ AC_CACHE_CHECK([whether integer division by zero raises SIGFPE],
+ gt_cv_int_divbyzero_sigfpe,
+ [
+ AC_TRY_RUN([
+#include <stdlib.h>
+#include <signal.h>
+
+static void
+#ifdef __cplusplus
+sigfpe_handler (int sig)
+#else
+sigfpe_handler (sig) int sig;
+#endif
+{
+ /* Exit with code 0 if SIGFPE, with code 1 if any other signal. */
+ exit (sig != SIGFPE);
+}
+
+int x = 1;
+int y = 0;
+int z;
+int nan;
+
+int main ()
+{
+ signal (SIGFPE, sigfpe_handler);
+/* IRIX and AIX (when "xlc -qcheck" is used) yield signal SIGTRAP. */
+#if (defined (__sgi) || defined (_AIX)) && defined (SIGTRAP)
+ signal (SIGTRAP, sigfpe_handler);
+#endif
+/* Linux/SPARC yields signal SIGILL. */
+#if defined (__sparc__) && defined (__linux__)
+ signal (SIGILL, sigfpe_handler);
+#endif
+
+ z = x / y;
+ nan = y / y;
+ exit (1);
+}
+], gt_cv_int_divbyzero_sigfpe=yes, gt_cv_int_divbyzero_sigfpe=no,
+ [
+ # Guess based on the CPU.
+ case "$host_cpu" in
+ alpha* | i[34567]86 | m68k | s390*)
+ gt_cv_int_divbyzero_sigfpe="guessing yes";;
+ *)
+ gt_cv_int_divbyzero_sigfpe="guessing no";;
+ esac
+ ])
+ ])
+ case "$gt_cv_int_divbyzero_sigfpe" in
+ *yes) value=1;;
+ *) value=0;;
+ esac
+ AC_DEFINE_UNQUOTED(INTDIV0_RAISES_SIGFPE, $value,
+ [Define if integer division by zero raises signal SIGFPE.])
+])