newton.h

// ---------------------------------------------------------------------
//
// Copyright (C) 2010 - 2017 by the deal.II authors
//
// This file is part of the deal.II library.
//
// The deal.II library is free software; you can use it, 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 2.1 of the License, or (at your option) any later version.
// The full text of the license can be found in the file LICENSE at
// the top level of the deal.II distribution.
//
// ---------------------------------------------------------------------


#ifndef dealii_newton_h
#define dealii_newton_h

#include <deal.II/base/smartpointer.h>
#include <deal.II/lac/solver_control.h>
#include <deal.II/algorithms/operator.h>
#include <deal.II/algorithms/any_data.h>

DEAL_II_NAMESPACE_OPEN

class ParameterHandler;

namespace Algorithms
{
  template <typename VectorType>
  class Newton : public OperatorBase
  {
  public:
    Newton (OperatorBase &residual, OperatorBase &inverse_derivative);

    static void declare_parameters (ParameterHandler &param);

    void parse_parameters (ParameterHandler &param);

    void initialize (OutputOperator<VectorType> &output);

    virtual void operator() (AnyData &out, const AnyData &in);

    virtual void notify(const Event &);

    double threshold(double new_value);

    ReductionControl control;
  private:
    SmartPointer<OperatorBase, Newton<VectorType> > residual;

    SmartPointer<OperatorBase, Newton<VectorType> > inverse_derivative;

    SmartPointer<OutputOperator<VectorType>, Newton<VectorType> > data_out;

    bool assemble_now;

    unsigned int n_stepsize_iterations;

    double assemble_threshold;

  public:
    bool debug_vectors;
    unsigned int debug;
  };
}

DEAL_II_NAMESPACE_CLOSE

#endif