source: trunk/Clp/src/ClpPrimalQuadraticDantzig.hpp @ 1502

/* $Id: ClpPrimalQuadraticDantzig.hpp 1502 2010-01-29 14:25:07Z forrest $ */
// Copyright (C) 2002, International Business Machines
// Corporation and others.  All Rights Reserved.
#ifndef ClpPrimalQuadraticDantzig_H
#define ClpPrimalQuadraticDantzig_H

#include "ClpPrimalColumnPivot.hpp"
class ClpSimplexPrimalQuadratic;
class ClpQuadraticInfo;
//#############################################################################

/** Primal Column Pivot Dantzig Algorithm Class

This is simplest choice - choose largest infeasibility

*/

class ClpPrimalQuadraticDantzig : public ClpPrimalColumnPivot {

public:

    ///@name Algorithmic methods
    //@{

    /** Returns pivot column, -1 if none.
        Lumbers over all columns - slow
        updateArray has cost updates (also use pivotRow_ from last iteration)
        Can just do full price if you really want to be slow
    */
    virtual int pivotColumn(CoinIndexedVector * updates,
                            CoinIndexedVector * spareRow1,
                            CoinIndexedVector * spareRow2,
                            CoinIndexedVector * spareColumn1,
                            CoinIndexedVector * spareColumn2);

    /// Just sets model
    virtual void saveWeights(ClpSimplex * model, int mode) {
        model_ = model;
    }
    //@}


    ///@name Constructors and destructors
    //@{
    /// Default Constructor
    ClpPrimalQuadraticDantzig();

    /// Copy constructor
    ClpPrimalQuadraticDantzig(const ClpPrimalQuadraticDantzig &);

    /// Constructor from model
    ClpPrimalQuadraticDantzig(ClpSimplexPrimalQuadratic * model,
                              ClpQuadraticInfo * info);

    /// Assignment operator
    ClpPrimalQuadraticDantzig & operator=(const ClpPrimalQuadraticDantzig& rhs);

    /// Destructor
    virtual ~ClpPrimalQuadraticDantzig ();

    /// Clone
    virtual ClpPrimalColumnPivot * clone(bool copyData = true) const;

    //@}

    //---------------------------------------------------------------------------

private:
    ///@name Private member data
    /// Pointer to info
    ClpQuadraticInfo * quadraticInfo_;
    //@}
};

#endif