/home/coin/SVN-release/CoinAll-1.1.0/Clp/src/ClpNetworkBasis.hpp

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// Copyright (C) 2003, International Business Machines
// Corporation and others.  All Rights Reserved.

/* 
   Authors
   
   John Forrest

 */
#ifndef ClpNetworkBasis_H
#define ClpNetworkBasis_H

class ClpMatrixBase;
class CoinIndexedVector;
class ClpSimplex;
#include "CoinFinite.hpp"

class ClpNetworkBasis {

public:


    ClpNetworkBasis (  );
  ClpNetworkBasis(const ClpSimplex * model,
                  int numberRows, const double * pivotRegion,
                  const int * permuteBack,const CoinBigIndex * startColumn,
                  const int * numberInColumn,
                  const int * indexRow, const double * 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();

  double slackValue_;
  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

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