ClpNetworkBasis.hpp

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/* $Id: ClpNetworkBasis.hpp 1722 2011-04-17 09:58:37Z stefan $ */
// Copyright (C) 2003, International Business Machines
// Corporation and others.  All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
/*
   Authors

   John Forrest

 */
#ifndef ClpNetworkBasis_H
#define ClpNetworkBasis_H

class ClpMatrixBase;
class CoinIndexedVector;
class ClpSimplex;
#include "CoinTypes.hpp"
#ifndef COIN_FAST_CODE
#define COIN_FAST_CODE
#endif

class ClpNetworkBasis {

public:

     ClpNetworkBasis (  );
     ClpNetworkBasis(const ClpSimplex * model,
                     int numberRows, const CoinFactorizationDouble * pivotRegion,
                     const int * permuteBack, const CoinBigIndex * startColumn,
                     const int * numberInColumn,
                     const int * indexRow, const CoinFactorizationDouble * element);
     ClpNetworkBasis ( const ClpNetworkBasis &other);

     ~ClpNetworkBasis (  );
     ClpNetworkBasis & operator = ( const ClpNetworkBasis & other );

     int factorize ( const ClpMatrixBase * matrix,
                     int rowIsBasic[], int columnIsBasic[]);


     int replaceColumn ( CoinIndexedVector * column,
                         int pivotRow);

     double updateColumn ( CoinIndexedVector * regionSparse,
                           CoinIndexedVector * regionSparse2,
                           int pivotRow);
     int updateColumn (  CoinIndexedVector * regionSparse,
                         double array[] ) const;
     int updateColumnTranspose (  CoinIndexedVector * regionSparse,
                                  double array[] ) const;
     int updateColumnTranspose (  CoinIndexedVector * regionSparse,
                                  CoinIndexedVector * regionSparse2) const;
private:

     // checks looks okay
     void check();
     // prints data
     void print();
#ifndef COIN_FAST_CODE
     double slackValue_;
#endif
     int numberRows_;
     int numberColumns_;
     const ClpSimplex * model_;
     int * parent_;
     int * descendant_;
     int * pivot_;
     int * rightSibling_;
     int * leftSibling_;
     double * sign_;
     int * stack_;
     int * permute_;
     int * permuteBack_;
     int * stack2_;
     int * depth_;
     char * mark_;
};
#endif