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# /home/coin/svn-release/Alps-1.4.8/Clp/src/ClpLinearObjective.hpp

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    00001 /* $Id: ClpLinearObjective.hpp 1665 2011-01-04 17:55:54Z lou $ */
    00002 // Copyright (C) 2003, International Business Machines
    00003 // Corporation and others.  All Rights Reserved.
    00004 // This code is licensed under the terms of the Eclipse Public License (EPL).
    00005
    00006 #ifndef ClpLinearObjective_H
    00007 #define ClpLinearObjective_H
    00008
    00009 #include "ClpObjective.hpp"
    00010
    00011 //#############################################################################
    00012
    00017 class ClpLinearObjective : public ClpObjective {
    00018
    00019 public:
    00020
    00022
    00023
    00028      virtual double * gradient(const ClpSimplex * model,
    00029                                const double * solution, double & offset, bool refresh,
    00030                                int includeLinear = 2);
    00033      virtual double reducedGradient(ClpSimplex * model, double * region,
    00034                                     bool useFeasibleCosts);
    00041      virtual double stepLength(ClpSimplex * model,
    00042                                const double * solution,
    00043                                const double * change,
    00044                                double maximumTheta,
    00045                                double & currentObj,
    00046                                double & predictedObj,
    00047                                double & thetaObj);
    00049      virtual double objectiveValue(const ClpSimplex * model, const double * solution) const ;
    00051      virtual void resize(int newNumberColumns) ;
    00053      virtual void deleteSome(int numberToDelete, const int * which) ;
    00055      virtual void reallyScale(const double * columnScale) ;
    00056
    00058
    00059
    00061
    00062
    00063      ClpLinearObjective();
    00064
    00066      ClpLinearObjective(const double * objective, int numberColumns);
    00067
    00069      ClpLinearObjective(const ClpLinearObjective &);
    00073      ClpLinearObjective (const ClpLinearObjective &rhs, int numberColumns,
    00074                          const int * whichColumns) ;
    00075
    00077      ClpLinearObjective & operator=(const ClpLinearObjective& rhs);
    00078
    00080      virtual ~ClpLinearObjective ();
    00081
    00083      virtual ClpObjective * clone() const;
    00087      virtual ClpObjective * subsetClone (int numberColumns,
    00088                                          const int * whichColumns) const;
    00089
    00091
    00092      //---------------------------------------------------------------------------
    00093
    00094 private:
    00097      double * objective_;
    00099      int numberColumns_;
    00101 };
    00102
    00103 #endif