I have a small program performing floating-point division by zero, so I expect SIGFPE.
#include <sys/types.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <iostream>
void signal_handler (int signo) {
if(signo == SIGFPE) {
std::cout << "Caught FPE\n";
}
}
int main (void) {
signal(SIGFPE,(*signal_handler));
double b = 1.0;
double c = 0.0;
double d = b/c;
std::cout << "d = "<< d << std::endl;
return 0;
}
Actually, I got the following output:
d = inf
gcc version 4.5.2 (Ubuntu/Linaro 4.5.2-8ubuntu4)
What should I do to throw SIGFPE in this case? Which factors FP operation behaviour depend on (compiler flags/CPU type and so on)?
Thanks