IpInexactDoglegNormal.hpp

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// Copyright (C) 2008 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// $Id: IpInexactDoglegNormal.hpp 1861 2010-12-21 21:34:47Z andreasw $
//
// Authors:  Andreas Waechter            IBM    2008-08-31

#ifndef __IPINEXACTDOGLEGNORMAL_HPP__
#define __IPINEXACTDOGLEGNORMAL_HPP__

#include "IpInexactNormalStepCalc.hpp"
#include "IpInexactNewtonNormal.hpp"
#include "IpInexactNormalTerminationTester.hpp"

namespace Ipopt
{
  class InexactDoglegNormalStep : public InexactNormalStepCalculator
  {
  public:
    InexactDoglegNormalStep(SmartPtr<InexactNewtonNormalStep> newton_step,
                            SmartPtr<InexactNormalTerminationTester> normal_tester = NULL);

    virtual ~InexactDoglegNormalStep();

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

    virtual bool ComputeNormalStep(SmartPtr<Vector>& normal_x,
                                   SmartPtr<Vector>& normal_s);

    static void RegisterOptions(SmartPtr<RegisteredOptions> roptions);

  private:
    InexactDoglegNormalStep();

    InexactDoglegNormalStep(const InexactDoglegNormalStep&);

    void operator=(const InexactDoglegNormalStep&);

    SmartPtr<InexactNewtonNormalStep> newton_step_;

    SmartPtr<InexactNormalTerminationTester> normal_tester_;

    Number omega_max_;

    Number curr_omega_;

    bool last_tr_inactive_;
  };

} // namespace Ipopt

#endif