[Boost-users] seeding a boost::random number generator...?

From: Graham Reitz (graham.cpp_at_[hidden])
Date: 2007-10-23 13:00:10

I am little confused on how to see a random generator.

What am I missing?

    // Grab the seed
    HighResTimer::Time time_secs = high_res_timer.getTime();

    // Go ahead and truncate, it's just a seed
    boost::int32_t time = static_cast<boost::int32_t>(time_secs * 100000);

    // produces randomness out of thin air
    // see pseudo-random number generators
    boost::mt19937 rng;
    rng.seed();  // How do you seed this with the time?

    // distribution that maps to 0..1
    // see random number distributions
    boost::uniform_real<> zero_to_one(0,1);

    // glues randomness with mapping
    boost::variate_generator<boost::mt19937&, boost::uniform_real<> >
        be_random zero_to_one);