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intdiv0.m4
Package: vlc-1.0.5.zip [view]
Upload User: kjfoods
Upload Date: 2020-07-06
Package Size: 29949k
Code Size: 2k
Category:
midi program
Development Platform:
Unix_Linux
- # intdiv0.m4 serial 2 (gettext-0.17)
- dnl Copyright (C) 2002, 2007 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,
- [
- gt_cv_int_divbyzero_sigfpe=
- changequote(,)dnl
- case "$host_os" in
- macos* | darwin[6-9]* | darwin[1-9][0-9]*)
- # On MacOS X 10.2 or newer, just assume the same as when cross-
- # compiling. If we were to perform the real test, 1 Crash Report
- # dialog window would pop up.
- case "$host_cpu" in
- i[34567]86 | x86_64)
- gt_cv_int_divbyzero_sigfpe="guessing yes" ;;
- esac
- ;;
- esac
- changequote([,])dnl
- if test -z "$gt_cv_int_divbyzero_sigfpe"; then
- AC_TRY_RUN([
- #include <stdlib.h>
- #include <signal.h>
- static void
- sigfpe_handler (int sig)
- {
- /* Exit with code 0 if SIGFPE, with code 1 if any other signal. */
- exit (sig != SIGFPE);
- }
- int x = 1;
- int y = 0;
- int z;
- int nan;
- int main ()
- {
- signal (SIGFPE, sigfpe_handler);
- /* IRIX and AIX (when "xlc -qcheck" is used) yield signal SIGTRAP. */
- #if (defined (__sgi) || defined (_AIX)) && defined (SIGTRAP)
- signal (SIGTRAP, sigfpe_handler);
- #endif
- /* Linux/SPARC yields signal SIGILL. */
- #if defined (__sparc__) && defined (__linux__)
- signal (SIGILL, sigfpe_handler);
- #endif
- z = x / y;
- nan = y / y;
- exit (1);
- }
- ], gt_cv_int_divbyzero_sigfpe=yes, gt_cv_int_divbyzero_sigfpe=no,
- [
- # Guess based on the CPU.
- changequote(,)dnl
- case "$host_cpu" in
- alpha* | i[34567]86 | x86_64 | m68k | s390*)
- gt_cv_int_divbyzero_sigfpe="guessing yes";;
- *)
- gt_cv_int_divbyzero_sigfpe="guessing no";;
- esac
- changequote([,])dnl
- ])
- fi
- ])
- 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.])
- ])