/**
 * @file   discretization_poisson_fd.hpp
 * @author Julian Iseringhausen <isering@ins.uni-bonn.de>
 * @date   Mon Apr 18 13:01:40 2011
 *
 * @brief  Finite difference discretization of the
 *         Poisson equation.
 *
 */

#ifndef DISCRETIZATION_POISSON_FD_HPP_
#define DISCRETIZATION_POISSON_FD_HPP_

#include "base/discretization.hpp"
#include "base/helper.hpp"

namespace VMG
{

class DiscretizationPoissonFD : public Discretization
{
public:
  DiscretizationPoissonFD(const int& order);

  vmg_float OperatorPrefactor(const Grid& grid) const
  {
    return 1.0 / Helper::pow_2(grid.Extent().MeshWidth().Max());
  }

  void ModifyRightHandSide();
};

}

#endif /* DISCRETIZATION_POISSON_FD_HPP_ */