Re: [Boost-users] having a problem seeding random number generator.

From: Jim Ingram (ingramj_at_[hidden])
Date: 2006-09-09 13:40:21

Some more information:

I'm using gcc 4.0.2 on Ubuntu, with the latest available version of Boost
(for Ubuntu anyway. It's 1.32.0+1.33.0-cvs20050727). Using different
generators, such as rand48, mt11213b, or minstd_rand, has no effect; I get
different numbers, but reseeding still doesn't change them. Here is the
test code I'm using:

#include "d6.h"
#include <iostream>
#include <fstream>

int main() {
        D6 die;

        std::ifstream in("/dev/random");
        if(!in) {
                return -1;
        }

        unsigned long s;
        in >> s;

        std::cout <<  "Seed: " << s << std::endl;
        die.seed(s);

        for (int i = 0; i < 20; i++)
                std::cout << die.roll() << std::endl;

}

Any ideas or suggestions would be appreciated. I'm pretty much baffled.

-- 
Jim