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# /home/coin/SVN-release/DyLP-1.5.0/Osi/src/OsiSolverBranch.hpp

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    00001 // Copyright (C) 2005, International Business Machines
    00002 // Corporation and others.  All Rights Reserved.
    00003 #ifndef OsiSolverBranch_H
    00004 #define OsiSolverBranch_H
    00005
    00006 class OsiSolverInterface;
    00007 #include "CoinWarmStartBasis.hpp"
    00008 #include "CoinFinite.hpp"
    00009
    00010 //#############################################################################
    00011
    00017 class OsiSolverBranch  {
    00018
    00019 public:
    00021
    00022
    00023   void addBranch(int iColumn, double value);
    00024
    00026   void addBranch(int way,int numberTighterLower, const int * whichLower, const double * newLower,
    00027                  int numberTighterUpper, const int * whichUpper, const double * newUpper);
    00029   void addBranch(int way,int numberColumns,const double * oldLower, const double * newLower,
    00030                  const double * oldUpper, const double * newUpper);
    00031
    00033   void applyBounds(OsiSolverInterface & solver,int way) const;
    00035   bool feasibleOneWay(const OsiSolverInterface & solver) const;
    00037   inline const int * starts() const
    00038   { return start_;}
    00040   inline const int * which() const
    00041   { return indices_;}
    00043   inline const double * bounds() const
    00044   { return bound_;}
    00046
    00047
    00049
    00050
    00051   OsiSolverBranch();
    00052
    00054   OsiSolverBranch(const OsiSolverBranch & rhs);
    00055
    00057   OsiSolverBranch & operator=(const OsiSolverBranch & rhs);
    00058
    00060   ~OsiSolverBranch ();
    00061
    00063
    00064 private:
    00066
    00067
    00068   int start_[5];
    00070   int * indices_;
    00072   double * bound_;
    00074 };
    00075 //#############################################################################
    00076
    00082 class OsiSolverResult  {
    00083
    00084 public:
    00086
    00087
    00088   void createResult(const OsiSolverInterface & solver,const double * lowerBefore,
    00089                     const double * upperBefore);
    00090
    00092   void restoreResult(OsiSolverInterface & solver) const;
    00093
    00095   inline const CoinWarmStartBasis & basis() const
    00096   { return basis_;}
    00097
    00099   inline double objectiveValue() const
    00100   { return objectiveValue_;}
    00101
    00103   inline const double * primalSolution() const
    00104   { return primalSolution_;}
    00105
    00107   inline const double * dualSolution() const
    00108   { return dualSolution_;}
    00109
    00111   inline const OsiSolverBranch & fixed() const
    00112   { return fixed_;}
    00114
    00115
    00117
    00118
    00119   OsiSolverResult();
    00120
    00122   OsiSolverResult(const OsiSolverInterface & solver,const double * lowerBefore,
    00123                   const double * upperBefore);
    00124
    00126   OsiSolverResult(const OsiSolverResult & rhs);
    00127
    00129   OsiSolverResult & operator=(const OsiSolverResult & rhs);
    00130
    00132   ~OsiSolverResult ();
    00133
    00135
    00136 private:
    00138
    00139
    00140   double objectiveValue_;
    00142   CoinWarmStartBasis basis_;
    00144   double * primalSolution_;
    00146   double * dualSolution_;
    00148   OsiSolverBranch fixed_;
    00150 };
    00151 #endif