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authorHarpreet2016-09-03 00:36:51 +0530
committerHarpreet2016-09-03 00:36:51 +0530
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diff --git a/newstructure/thirdparty/linux/include/coin/BonCbc.hpp b/newstructure/thirdparty/linux/include/coin/BonCbc.hpp
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-// (C) Copyright International Business Machines Corporation 2007
-// All Rights Reserved.
-// This code is published under the Eclipse Public License.
-//
-// Authors :
-// Pierre Bonami, International Business Machines Corporation
-//
-// Date : 04/19/2007
-
-#ifndef BonCbc_H
-#define BonCbc_H
-
-//#include "BonBabSetupBase.hpp"
-#include "CbcModel.hpp"
-
-namespace Bonmin
-{
- class BabSetupBase;
- class Bab
- {
- public:
- /** Integer optimization return codes.*/
- enum MipStatuses {FeasibleOptimal /** Optimum solution has been found and its optimality proved.*/,
- ProvenInfeasible /** Problem has been proven to be infeasible.*/,
- Feasible /** An integer solution to the problem has been found.*/,
- UnboundedOrInfeasible /*Coninuous relaxation is unbounded.*/,
- NoSolutionKnown/** No feasible solution to the problem is known*/,
- NumMipStats};
-
-
- /** Constructor.*/
- Bab();
- /** destructor.*/
- virtual ~Bab();
- /** Perform a branch-and-bound using given setup.*/
- virtual void branchAndBound(BabSetupBase & s);
-
- /**operator() performs the branchAndBound*/
- virtual void operator()(BabSetupBase & s);
-
- /**operator() performs the branchAndBound*/
- virtual void operator()(BabSetupBase * s){
- operator()(*s);}
-
- /** get the best solution known to the problem (is optimal if MipStatus is FeasibleOptimal).
- if no solution is known returns NULL.*/
- const double * bestSolution() const
- {
- return bestSolution_;
- }
- /** return objective value of the bestSolution */
- double bestObj() const
- {
- return bestObj_;
- }
-
- /** return Mip Status */
- MipStatuses mipStatus() const
- {
- return mipStatus_;
- }
-
- /** return the best known lower bound on the objective value*/
- double bestBound();
-
- /** return the total number of nodes explored.*/
- int numNodes() const
- {
- return numNodes_;
- }
- /** return the total number of iterations in the last mip solved.*/
- int iterationCount()
- {
- return mipIterationCount_;
- }
- /** returns the value of the continuous relaxation. */
- double continuousRelaxation()
- {
- return continuousRelaxation_;
- }
-
- /** virtual callback function to eventually modify objects for integer variable
- (replace with user set). This is called after CbcModel::findIntegers */
- virtual void replaceIntegers(OsiObject ** objects, int numberObjects)
- {}
- /** Get cbc model used to solve. */
- const CbcModel& model() const
- {
- return model_;
- }
-
- /** Get cbc model used to solve as non-const, in case we want to
- change options before things happen */
- CbcModel& model()
- {
- return model_;
- }
-
- protected:
- /** Stores the solution of MIP. */
- double * bestSolution_;
-
- /** Status of the mip solved*/
- MipStatuses mipStatus_;
- /** objValue of MIP */
- double bestObj_;
- /** best known (lower) bound.*/
- double bestBound_;
- /** Continuous relaxation of the problem */
- double continuousRelaxation_;
- /** Number of nodes enumerated.*/
- int numNodes_;
- /** get total number of iterations in last mip solved.*/
- int mipIterationCount_;
- /** CbcModel used to solve problem.*/
- CbcModel model_;
- /** Message handler for CbcModel. */
- CoinMessageHandler * modelHandler_;
- /** \brief OsiObjects of the model.
- * this is not null if and only if there are some non-simple-integer branching objects such as SOS constraints.
- * It is up to Bab to pass them over to appropriate components of the algorithm. */
- OsiObject** objects_;
- /** number of objects.*/
- int nObjects_;
- };
-}
-#endif