ClpPredictorCorrector.hpp

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/* $Id: ClpPredictorCorrector.hpp 1665 2011-01-04 17:55:54Z lou $ */
// 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 ClpPredictorCorrector_H
#define ClpPredictorCorrector_H

#include "ClpInterior.hpp"

class ClpPredictorCorrector : public ClpInterior {

public:

     int solve();

     //phase  - 0 predictor
     //         1 corrector
     //         2 primal dual
     CoinWorkDouble findStepLength( int phase);
     CoinWorkDouble findDirectionVector(const int phase);
     int createSolution();
     //phase 0=as is , 1 = after predictor , 2 after corrector
     CoinWorkDouble complementarityGap(int & numberComplementarityPairs, int & numberComplementarityItems,
                                       const int phase);
     //phase 0=affine , 1 = corrector , 2 = primal-dual
     void setupForSolve(const int phase);
     void solveSystem(CoinWorkDouble * region1, CoinWorkDouble * region2,
                      const CoinWorkDouble * region1In, const CoinWorkDouble * region2In,
                      const CoinWorkDouble * saveRegion1, const CoinWorkDouble * saveRegion2,
                      bool gentleRefine);
     bool checkGoodMove(const bool doCorrector, CoinWorkDouble & bestNextGap,
                        bool allowIncreasingGap);
     bool checkGoodMove2(CoinWorkDouble move, CoinWorkDouble & bestNextGap,
                         bool allowIncreasingGap);
     //returns number fixed
     int updateSolution(CoinWorkDouble nextGap);
     CoinWorkDouble affineProduct();
     void debugMove(int phase, CoinWorkDouble primalStep, CoinWorkDouble dualStep);

};
#endif