Rng.h

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//                                                         //
// Copyright (c) 2003-2017 by The University of Queensland //
// Centre for Geoscience Computing                         //
// http://earth.uq.edu.au/centre-geoscience-computing      //
//                                                         //
// Primary Business: Brisbane, Queensland, Australia       //
// Licensed under the Open Software License version 3.0    //
// http://www.apache.org/licenses/LICENSE-2.0              //
//                                                         //
 
 
#ifndef ESYS_LSMRNG_H
#define ESYS_LSMRNG_H
 
#include <boost/random.hpp>
 
namespace esys
{
  namespace lsm
  {
    template <typename TmplRng=boost::mt19937>
    class UniformRng
    {
    public:
      typedef TmplRng Rng;
      typedef boost::uniform_real<> UniformReal;
      typedef boost::variate_generator<Rng &, UniformReal> Generator;
 
      UniformRng(double minRn, double maxRn);
 
      double operator()();
 
      void seed();
 
      template <typename Tmpl>
      void seed(Tmpl &s);
 
      template <typename TmplIt>
      void seed(TmplIt begin, TmplIt end);
 
    private:
      Rng         m_rng;
      UniformReal m_uniform;
      Generator   m_generator;
    };
 
    typedef UniformRng<> DefaultUniformRng;
 
    namespace rng
    {
      extern DefaultUniformRng s_zeroOneUniform;
    }
  }
}
 
#include "Foundation/Rng.hpp"
 
#endif