random_number_generator.h

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/*
 *  SPDX-FileCopyrightText: Copyright 2021, Siavash Ameli <sameli@berkeley.edu>
 *  SPDX-License-Identifier: BSD-3-Clause
 *  SPDX-FileType: SOURCE
 *
 *  This program is free software: you can redistribute it and/or modify it
 *  under the terms of the license found in the LICENSE.txt file in the root
 *  directory of this source tree.
 */
 
 
#ifndef _RANDOM_GENERATOR_RANDOM_NUMBER_GENERATOR_H_
#define _RANDOM_GENERATOR_RANDOM_NUMBER_GENERATOR_H_
 
 
// =======
// Headers
// =======
 
#include <stdint.h>  // int64_t, uint64_t
class Xoshiro256StarStar;
 
 
// =======================
// Random Number Generator
// =======================
 
 
class RandomNumberGenerator
{
    public:
        // Member methods
        RandomNumberGenerator();
        explicit RandomNumberGenerator(const int num_threads_);
        explicit RandomNumberGenerator(
                const int num_threads_,
                const int64_t seed);
        ~RandomNumberGenerator();
        uint64_t next(const int thread_id);
 
    protected:
        // Member methods
        void initialize(int64_t seed);
 
        // Member data
        const int num_threads;
        Xoshiro256StarStar** xoshiro_256_star_star;
};
 
 
#endif  // _RANDOM_GENERATOR_RANDOM_NUMBER_GENERATOR_H_