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# /home/coin/svn-release/Alps-1.4.5/Osi/src/Osi/OsiSolverBranch.hpp

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    00001 // Copyright (C) 2005, International Business Machines
    00002 // Corporation and others.  All Rights Reserved.
    00003 // This code is licensed under the terms of the Eclipse Public License (EPL).
    00004
    00005 #ifndef OsiSolverBranch_H
    00006 #define OsiSolverBranch_H
    00007
    00008 class OsiSolverInterface;
    00009 #include "CoinWarmStartBasis.hpp"
    00010
    00011 //#############################################################################
    00012
    00018 class OsiSolverBranch  {
    00019
    00020 public:
    00022
    00023
    00024   void addBranch(int iColumn, double value);
    00025
    00027   void addBranch(int way,int numberTighterLower, const int * whichLower, const double * newLower,
    00028                  int numberTighterUpper, const int * whichUpper, const double * newUpper);
    00030   void addBranch(int way,int numberColumns,const double * oldLower, const double * newLower,
    00031                  const double * oldUpper, const double * newUpper);
    00032
    00034   void applyBounds(OsiSolverInterface & solver,int way) const;
    00036   bool feasibleOneWay(const OsiSolverInterface & solver) const;
    00038   inline const int * starts() const
    00039   { return start_;}
    00041   inline const int * which() const
    00042   { return indices_;}
    00044   inline const double * bounds() const
    00045   { return bound_;}
    00047
    00048
    00050
    00051
    00052   OsiSolverBranch();
    00053
    00055   OsiSolverBranch(const OsiSolverBranch & rhs);
    00056
    00058   OsiSolverBranch & operator=(const OsiSolverBranch & rhs);
    00059
    00061   ~OsiSolverBranch ();
    00062
    00064
    00065 private:
    00067
    00068
    00069   int start_[5];
    00071   int * indices_;
    00073   double * bound_;
    00075 };
    00076 //#############################################################################
    00077
    00083 class OsiSolverResult  {
    00084
    00085 public:
    00087
    00088
    00089   void createResult(const OsiSolverInterface & solver,const double * lowerBefore,
    00090                     const double * upperBefore);
    00091
    00093   void restoreResult(OsiSolverInterface & solver) const;
    00094
    00096   inline const CoinWarmStartBasis & basis() const
    00097   { return basis_;}
    00098
    00100   inline double objectiveValue() const
    00101   { return objectiveValue_;}
    00102
    00104   inline const double * primalSolution() const
    00105   { return primalSolution_;}
    00106
    00108   inline const double * dualSolution() const
    00109   { return dualSolution_;}
    00110
    00112   inline const OsiSolverBranch & fixed() const
    00113   { return fixed_;}
    00115
    00116
    00118
    00119
    00120   OsiSolverResult();
    00121
    00123   OsiSolverResult(const OsiSolverInterface & solver,const double * lowerBefore,
    00124                   const double * upperBefore);
    00125
    00127   OsiSolverResult(const OsiSolverResult & rhs);
    00128
    00130   OsiSolverResult & operator=(const OsiSolverResult & rhs);
    00131
    00133   ~OsiSolverResult ();
    00134
    00136
    00137 private:
    00139
    00140
    00141   double objectiveValue_;
    00143   CoinWarmStartBasis basis_;
    00145   double * primalSolution_;
    00147   double * dualSolution_;
    00149   OsiSolverBranch fixed_;
    00151 };
    00152 #endif