IpRestoMinC_1Nrm.hpp

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// Copyright (C) 2004, 2010 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// $Id: IpRestoMinC_1Nrm.hpp 1861 2010-12-21 21:34:47Z andreasw $
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13
 
#ifndef __IPRESTOC_1NRM_HPP__
#define __IPRESTOC_1NRM_HPP__
 
#include "IpRestoPhase.hpp"
#include "IpIpoptAlg.hpp"
#include "IpEqMultCalculator.hpp"
 
namespace Ipopt
{
 
  class MinC_1NrmRestorationPhase : public RestorationPhase
  {
  public:
    MinC_1NrmRestorationPhase(IpoptAlgorithm& resto_alg,
                              const SmartPtr<EqMultiplierCalculator>& eq_mult_calculator);
 
    virtual ~MinC_1NrmRestorationPhase();
 
    virtual bool InitializeImpl(const OptionsList& options,
                                const std::string& prefix);
 
    static void RegisterOptions(SmartPtr<RegisteredOptions> roptions);
 
  protected:
    virtual bool PerformRestoration();
 
  private:
    MinC_1NrmRestorationPhase();
 
    MinC_1NrmRestorationPhase(const MinC_1NrmRestorationPhase&);
 
    void operator=(const MinC_1NrmRestorationPhase&);
 
    SmartPtr<IpoptAlgorithm> resto_alg_;
    SmartPtr<EqMultiplierCalculator> eq_mult_calculator_;
 
    SmartPtr<OptionsList> resto_options_;
 
    Number constr_mult_reset_threshold_;
    Number bound_mult_reset_threshold_;
    bool expect_infeasible_problem_;
    Number constr_viol_tol_;
    Number resto_failure_feasibility_threshold_;
 
    Index count_restorations_;
 
    void ComputeBoundMultiplierStep(Vector& delta_z,
                                    const Vector& curr_z,
                                    const Vector& curr_slack,
                                    const Vector& trial_slack);
  };
 
} // namespace Ipopt
 
#endif