IpInexactNewtonNormal.hpp

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// Copyright (C) 2008, 2011 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// $Id: IpInexactNewtonNormal.hpp 1886 2011-01-27 23:11:16Z andreasw $
//
// Authors:  Andreas Waechter            IBM    2008-09-05

#ifndef __IPINEXACTNEWTONNORMAL_HPP__
#define __IPINEXACTNEWTONNORMAL_HPP__

#include "IpAlgStrategy.hpp"
#include "IpAugSystemSolver.hpp"
#include "IpInexactCq.hpp"

namespace Ipopt
{
  class InexactNewtonNormalStep : public AlgorithmStrategyObject
  {
  public:
    InexactNewtonNormalStep(SmartPtr<AugSystemSolver> aug_solver);

    virtual ~InexactNewtonNormalStep();

    virtual bool InitializeImpl(const OptionsList& options,
                                const std::string& prefix);

    virtual bool ComputeNewtonNormalStep(Vector& newton_x, Vector& newton_s);

    static void RegisterOptions(SmartPtr<RegisteredOptions> roptions);

  protected:
    InexactData& InexData()
    {
      InexactData& inexact_data =
        static_cast<InexactData&>(IpData().AdditionalData());
      DBG_ASSERT(dynamic_cast<InexactData*>(&IpData().AdditionalData()));
      return inexact_data;
    }

    InexactCq& InexCq()
    {
      InexactCq& inexact_cq =
        static_cast<InexactCq&>(IpCq().AdditionalCq());
      DBG_ASSERT(dynamic_cast<InexactCq*>(&IpCq().AdditionalCq()));
      return inexact_cq;
    }

  private:
    InexactNewtonNormalStep();

    InexactNewtonNormalStep(const InexactNewtonNormalStep&);

    void operator=(const InexactNewtonNormalStep&);

    SmartPtr<AugSystemSolver> aug_solver_;
  };

} // namespace Ipopt

#endif