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//
// Copyright (C) 2020 Gareth Jones, Glysade LLC
//
// @@ All Rights Reserved @@
// This file is part of the RDKit.
// The contents are covered by the terms of the BSD license
// which is included in the file license.txt, found at the root
// of the RDKit source tree.
//
#ifndef UTILS_H_
#define UTILS_H_
#include <cstdint>
#include <random>
#include "export.h"
namespace GarethUtil {
/*
* Singleton class to hold a random number generator
*
*/
class GA_EXPORT RandomUtil {
public:
RandomUtil(const RandomUtil &rhs) = delete;
RandomUtil &operator=(const RandomUtil &rhs) = delete;
RandomUtil(RandomUtil &&rhs) = delete;
RandomUtil &operator=(RandomUtil &&rhs) = delete;
/*
* return a random number between 0 and 1
*/
double normalRand();
/*
* return a random integer between top and bottom
*/
int randomInt(int bottom, int top);
bool randomBoolean();
void seed(uint32_t seed);
/**
* Get singleton
*/
static RandomUtil &getInstance();
private:
RandomUtil();
virtual ~RandomUtil();
std::mt19937 rng;
std::uniform_real_distribution<double> realDistribution;
};
} // namespace GarethUtil
#endif /* UTILS_H_ */
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