IpProbingMuOracle.hpp

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// Copyright (C) 2004, 2006 International Business Machines and others.
// All Rights Reserved.
// This code is published under the Eclipse Public License.
//
// $Id: IpProbingMuOracle.hpp 1861 2010-12-21 21:34:47Z andreasw $
//
// Authors:  Carl Laird, Andreas Waechter     IBM    2004-08-13

#ifndef __IPPROBINGMUORACLE_HPP__
#define __IPPROBINGMUORACLE_HPP__

#include "IpMuOracle.hpp"
#include "IpPDSystemSolver.hpp"

namespace Ipopt
{

  class ProbingMuOracle : public MuOracle
  {
  public:
    ProbingMuOracle(const SmartPtr<PDSystemSolver>& pd_solver);
    virtual ~ProbingMuOracle();

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

    virtual bool CalculateMu(Number mu_min, Number mu_max, Number& new_mu);

    static void RegisterOptions(SmartPtr<RegisteredOptions> roptions);

  private:

    ProbingMuOracle();
    ProbingMuOracle(const ProbingMuOracle&);

    void operator=(const ProbingMuOracle&);

    SmartPtr<PDSystemSolver> pd_solver_;

    Number CalculateAffineMu(Number alpha_primal,
                             Number alpha_dual,
                             const IteratesVector& step);

    Number sigma_max_;
  };

} // namespace Ipopt

#endif