#include <boost/random.hpp>
#include <time.h>

class SampleNormal {
    typedef boost::rand48 rng_t;
    typedef boost::normal_distribution<double> dist_t;
    typedef boost::variate_generator<rng_t&, dist_t> generator_t;

    rng_t rng_;
    dist_t dist_;
    generator_t dice_;

public:
    SampleNormal(double mean, double sigma)
        : rng_(boost::uint64_t(time(0)))
        , dist_(mean, sigma)
        , dice_(rng_, dist_)
    {}

    double operator()()
    {
        return dice_();
    }
};


#include <iostream>

int main()
{
    SampleNormal normal_sampler(3, 0.5);

    for (int i = 0; i != 10; ++i)
        std::cout << normal_sampler() << '\n';
    std::flush(std::cout);

    return 0;
}