Coin-All: /home/coin/SVN-release/CoinAll-1.1.0/Clp/src/ClpLinearObjective.hpp Source File

00001 // Copyright (C) 2003, International Business Machines
00002 // Corporation and others.  All Rights Reserved.
00003 #ifndef ClpLinearObjective_H
00004 #define ClpLinearObjective_H
00005 
00006 #include "ClpObjective.hpp"
00007 
00008 //#############################################################################
00009 
00014 class ClpLinearObjective : public ClpObjective {
00015   
00016 public:
00017   
00019 
00020   
00027   virtual double * gradient(const ClpSimplex * model,
00028                             const double * solution, double & offset,bool refresh,
00029                             int includeLinear=2);
00032   virtual double reducedGradient(ClpSimplex * model, double * region,
00033                                  bool useFeasibleCosts);
00040   virtual double stepLength(ClpSimplex * model,
00041                             const double * solution,
00042                             const double * change,
00043                             double maximumTheta,
00044                             double & currentObj,
00045                             double & predictedObj,
00046                             double & thetaObj);
00048   virtual double objectiveValue(const ClpSimplex * model, const double * solution) const ;
00050   virtual void resize(int newNumberColumns) ; 
00052   virtual void deleteSome(int numberToDelete, const int * which) ; 
00054   virtual void reallyScale(const double * columnScale) ;
00055   
00057   
00058   
00060 
00061 
00062   ClpLinearObjective(); 
00063   
00065   ClpLinearObjective(const double * objective, int numberColumns); 
00066   
00068   ClpLinearObjective(const ClpLinearObjective &);
00072   ClpLinearObjective (const ClpLinearObjective &rhs,int numberColumns, 
00073                                       const int * whichColumns) ;
00074   
00076   ClpLinearObjective & operator=(const ClpLinearObjective& rhs);
00077   
00079   virtual ~ClpLinearObjective ();
00080 
00082   virtual ClpObjective * clone() const;
00086   virtual ClpObjective * subsetClone (int numberColumns, 
00087                                       const int * whichColumns) const;
00088  
00090 
00091   //---------------------------------------------------------------------------
00092   
00093 private:
00096   double * objective_;
00098   int numberColumns_;
00100 };
00101 
00102 #endif