Listing 1.
Random Number Generator
Jon Orwant

Randomness
The Perl Journal, Winter 1996
 
#!/usr/bin/perl -w

use Config;

print "Your random number generator repeats itself 
       after\n";
print "no more than ", 2 ** $Config{randbits}, 
      "numbers.\n";

srand(1);

if (int(rand() * (2 ** $Config{randbits})) == 16838) {
    print "Uh oh!  Looks like your computer uses the 
	       ANSI example.\n";
    print "I bet the next three rands are 5758, 10113, 
	       and 17515.\n";
    foreach (1,2,3) {
        print rand() * (2 ** $Config}{randbits}), "\n";
    }
}