RandomNumberService.h

// Copyright (C) 2015 Technische Universitaet Muenchen
// This file is part of the Mamico project. For conditions of distribution
// and use, please see the copyright notice in Mamico's main folder, or at
// www5.in.tum.de/mamico
#ifndef _MOLECULARDYNAMICS_SERVICES_RANDOMNUMBERSERVICE_H_
#define _MOLECULARDYNAMICS_SERVICES_RANDOMNUMBERSERVICE_H_
 
#include "tarch/TarchDefinitions.h"
#include "tarch/la/Vector.h"
#include <cmath>
#include <cstdlib>
#include <iostream>
 
namespace tarch {
namespace utils {
class RandomNumberService;
}
} // namespace tarch

class tarch::utils::RandomNumberService {
public:
  static RandomNumberService& getInstance();
 
  void init(bool fixSeed = false);
 
  void shutdown();

  double getUniformRandomNumber() const;

  double getGaussianRandomNumber();
 
private:
  RandomNumberService() {}
  ~RandomNumberService() {}
 
  tarch::la::Vector<2, double> _randomNumbers;
 
  bool _isFirstRandomNumber;
  bool _isInitialized{false};
};
#endif // _MOLECULARDYNAMICS_SERVICES_RANDOMNUMBERSERVICE_H_