random_sequence.h

/*
 * Fermat
 *
 * Copyright (c) 2016-2019, NVIDIA CORPORATION. All rights reserved.
 * 
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 * modification, are permitted provided that the following conditions are met:
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 *      notice, this list of conditions and the following disclaimer.
 *    * Redistributions in binary form must reproduce the above copyright
 *      notice, this list of conditions and the following disclaimer in the
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 *    * Neither the name of the NVIDIA CORPORATION nor the
 *      names of its contributors may be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 * 
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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 */

#pragma once

#include <buffers.h>
#include <curand.h>


struct DeviceRandomSequence
{
    DeviceRandomSequence(const uint64 seed = 1234ULL)
    {
        curandCreateGenerator(&generator, CURAND_RNG_PSEUDO_DEFAULT);
        curandSetPseudoRandomGeneratorSeed(generator, seed);
    }

    void next(const uint32 n, float* sequence)
    {
        curandGenerateUniform(generator, sequence, n);
    }

    curandGenerator_t   generator;
};