Mass Deface
#include
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 (2);
}
]])],
[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.])
])