RandomGenerator.hpp

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#ifndef SRC_DATA_UTILS_RANDOMGENERATOR_HPP_
#define SRC_DATA_UTILS_RANDOMGENERATOR_HPP_

#include <boost/atomic.hpp>
#include <boost/thread/mutex.hpp>

#include <random>

namespace mic {
namespace utils {

class RandomGenerator {
public:

    static RandomGenerator* getInstance();


    uint64_t uniRandInt(int min = 0, int max = RAND_MAX);

    double uniRandReal(double min = 0, double max = 1);

    double normRandReal(double mean = 0, double variance = 1);

private:
    static boost::atomic<RandomGenerator*> instance_;

    static boost::mutex instantiation_mutex;

    RandomGenerator();

    std::random_device rd;

    std::mt19937_64 rng_mt19937_64;

    std::uniform_int_distribution<> uniform_int_dist;

    std::uniform_real_distribution<> uniform_real_dist;

    std::normal_distribution<> normal_real_dist;

};

#define RAN_GEN mic::utils::RandomGenerator::getInstance()


} /* namespace utils */
} /* namespace mic */

#endif /* SRC_DATA_UTILS_RANDOMGENERATOR_HPP_ */