SobolSequence.h

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// Mantid Repository : https://github.com/mantidproject/mantid
//
// Copyright © 2012 ISIS Rutherford Appleton Laboratory UKRI,
//   NScD Oak Ridge National Laboratory, European Spallation Source,
//   Institut Laue - Langevin & CSNS, Institute of High Energy Physics, CAS
// SPDX - License - Identifier: GPL - 3.0 +
#pragma once
 
//------------------------------------------------------------------------------
// Includes
//------------------------------------------------------------------------------
#include "MantidKernel/QuasiRandomNumberSequence.h"
#include <gsl/gsl_qrng.h>
 
//------------------------------------------------------------------------------
// Forward declarations
//------------------------------------------------------------------------------
 
namespace Mantid {
namespace Kernel {
class MANTID_KERNEL_DLL SobolSequence : public QuasiRandomNumberSequence {
public:
  explicit SobolSequence(const unsigned int ndims);
  ~SobolSequence() override;
 
  SobolSequence() = delete;
 
  SobolSequence(const SobolSequence &) = delete;
 
  SobolSequence &operator=(const SobolSequence &) = delete;
 
  void generateNextPoint() override;
  void restart() override;
  void save() override;
  void restore() override;
 
private:
  void setNumberOfDimensions(const unsigned int ndims);
  void deleteCurrentGenerator();
 
  gsl_qrng *m_gslGenerator;
  gsl_qrng *m_savedGenerator;
};
} // namespace Kernel
} // namespace Mantid