TSobolSequence.h

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// Copyright (C) 2013-2024 CEA/DES
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, either version 3 of the License, or any
// later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
// TSobolSequence Wed Jul 26 20:20:06 CEST 2006
// $Id$
// $Author$
// $Date$
// $Revision$
// $State$

#ifndef TSOBOLSEQUENCE_H
#define TSOBOLSEQUENCE_H
#include "TSequence.h"

#ifndef ROOT_TMatrixD
#include "TMatrixD.h"
#endif
#ifndef ROOT_TVectorD
#include "TVectorD.h"
#endif

#include <iostream>
using std::cout;
using std::endl;

/* maximum allowed space dimension */
#define SOBOL_MAX_DIMENSION 40

/* bit count; assumes sizeof(int) >= 32-bit */
#define SOBOL_BIT_COUNT 30

namespace URANIE
{
namespace Sampler
{
class TSobolSequence: public TSequence
{

    // Attributes
private:
    TMatrixD v_direction;                 
    TVectorD _last_numerator_vec;         
    Double_t _last_denominator_inv;
    Int_t _nCounter;

    // Operations
public:
    //---------------------------------------------
    TSobolSequence(ULong_t ndim);
    virtual ~TSobolSequence();

    void setInstance(const ULong_t n);
    void init();

    //---------------------------------------------
    virtual void printLog(Option_t *option = "");

    ClassDef(URANIE::Sampler::TSobolSequence, ID_SAMPLER)
    //Classe de
};

} // Fin du namespace Sampler
} // Fin du namespace URANIE
#endif
// fin du fichier $RCSfile$.