Philox4x32-10.hpp

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/**
 * @file
 * Defines the `OpenMPCD::CUDA::Random::Generators::Philox4x32_10` class.
 */
 
#ifndef OPENMPCD_CUDA_RANDOM_GENERATORS_PHILOX4X32_10_HPP
#define OPENMPCD_CUDA_RANDOM_GENERATORS_PHILOX4X32_10_HPP
 
#include <OpenMPCD/CUDA/Macros.hpp>
 
#include <curand.h>
#include <curand_philox4x32_x.h>
#include <curand_kernel.h>
 
namespace OpenMPCD
{
namespace CUDA
{
namespace Random
{
namespace Generators
{
 
/**
 * Philox4x32-10 @cite Salmon2011 counter-bases PRNG.
 *
 * This class is compatible with the Philox4x32-10 PRNG as implemented in the
 * cuRAND library.
 */
class Philox4x32_10
{
public:
    /**
     * The constructor.
     *
     * @param[in] seed        The seed.
     * @param[in] subsequence The subsequence number.
     */
    OPENMPCD_CUDA_DEVICE
    Philox4x32_10(
        const unsigned long long seed,
        const unsigned long long subsequence)
    {
        curand_init(seed, subsequence, 0, getState());
    }
 
public:
    /**
     * Returns a pointer to the internal cuRAND state.
     */
    OPENMPCD_CUDA_DEVICE
    curandStatePhilox4_32_10_t* getState()
    {
        return &state;
    }
 
private:
    curandStatePhilox4_32_10_t state; ///< The internal cuRAND state.
}; //class Philox4x32_10
 
} //namespace Generators
} //namespace Random
} //namespace CUDA
} //namespace OpenMPCD
 
 
#endif //OPENMPCD_CUDA_RANDOM_GENERATORS_PHILOX4X32_10_HPP