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/build/buildd/clp-1.11.1/Clp/src/ClpLinearObjective.hpp

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00001 /* $Id: ClpLinearObjective.hpp 1458 2009-11-05 12:34:07Z forrest $ */
00002 // Copyright (C) 2003, International Business Machines
00003 // Corporation and others.  All Rights Reserved.
00004 #ifndef ClpLinearObjective_H
00005 #define ClpLinearObjective_H
00006 
00007 #include "ClpObjective.hpp"
00008 
00009 //#############################################################################
00010 
00015 class ClpLinearObjective : public ClpObjective {
00016   
00017 public:
00018   
00020 
00021   
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

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