randomNumberGenerator.h

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// -*- Mode: C++; tab-width: 2; -*-
// vi: set ts=2 sw=2
//
// $Id: randomNumberGenerator.h,v 1.1.18.1 2007/03/25 21:23:46 oliver Exp $
//

#ifndef BALL_MATHS_RANDOMNUMBERGENERATOR_H
#define BALL_MATHS_RANDOMNUMBERGENERATOR_H

#ifndef BALL_COMMON_GLOBAL_H
# include <BALL/COMMON/global.h>
#endif

#include<vector>

namespace BALL
{

  class BALL_EXPORT RandomNumberGenerator
  {

    public:

      RandomNumberGenerator();

      RandomNumberGenerator(const RandomNumberGenerator& rng);

      ~RandomNumberGenerator();

      void setup(int ij = 1802, int kl = 9373);

      double randomUniform();

      double randomGaussian(double mean, double stddev);

      int randomInteger(int lower, int upper);

      double randomDouble(double lower, double upper);

      bool isValid() const
        
      {
        return(valid_);
      }

    private:

      //_
      std::vector<double> u_;

      //_
      double c_;

      //_
      double cd_;

      //_
      double cm_;

      //_
      int i97_;

      //_
      int j97_;

      //_ 
      bool valid_;


  };
}

#endif //  BALL_MATHS_RANDOMNUMBERGENERATOR_H

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