random.hpp

/*
 * random.hpp
 *
 * Created on: May 28, 2015
 * Author: Jan Travnicek
 */

#ifndef __RANDOM_HPP_
#define __RANDOM_HPP_

#include <random>
#include <limits>

namespace ext {

class random_devices {
public:
	static std::random_device random;

private:
	class semirandom_device {
	public:
		typedef unsigned int result_type;

	private:
		std::mt19937 gen;
		std::uniform_int_distribution<unsigned int> dis;

	public:
		semirandom_device() : gen ( 0 ) {
		}

		result_type operator()() {
			return dis(gen);
		}

		result_type min() {
			return 0;
		}

		result_type max() {
			return std::numeric_limits<result_type>::max() ;
		}

		void seed ( unsigned int seed ) {
			gen.seed ( seed );
		}
	};
public:
	static semirandom_device semirandom;

};

} /* namespace ext */

#endif /* __RANDOM_HPP_ */