Structure updated and intqpipopt files added

1 files changed, 88 insertions, 0 deletions

diff --git a/newstructure/thirdparty/linux/include/coin/BonHeuristicDive.hpp b/newstructure/thirdparty/linux/include/coin/BonHeuristicDive.hpp
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+++ b/newstructure/thirdparty/linux/include/coin/BonHeuristicDive.hpp
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+// Copyright (C) 2007, International Business Machines Corporation and others. 
+// All Rights Reserved.
+// This code is published under the Eclipse Public License.
+//
+// Authors :
+// Joao P. Goncalves, International Business Machines Corporation
+//
+// Date : November 12, 2007
+
+#ifndef BonHeuristicDive_HPP
+#define BonHeuristicDive_HPP
+#include "BonOsiTMINLPInterface.hpp"
+#include "BonBonminSetup.hpp"
+#include "CbcHeuristic.hpp"
+
+namespace Bonmin
+{
+  class HeuristicDive : public CbcHeuristic
+  {
+  public:
+    /// Default constructor
+    HeuristicDive();
+
+    /// Constructor with setup
+    HeuristicDive(BonminSetup * setup);
+
+    /// Copy constructor
+    HeuristicDive(const HeuristicDive &copy);
+
+    /// Destructor
+    ~HeuristicDive() {}
+
+    /// Assignment operator
+    HeuristicDive & operator=(const HeuristicDive & rhs);
+
+    /// Clone
+    virtual CbcHeuristic * clone() const = 0;
+
+    /// Resets stuff if model changes
+    virtual void resetModel(CbcModel * model){
+      setModel(model);
+    }
+
+    /** Change setup used for heuristic.*/
+    virtual void setSetup(BonminSetup * setup){
+      setup_ = setup;
+      //      Initialize(setup_->options());
+    }
+
+    /// Set percentage of integer variables to fix at bounds
+    void setPercentageToFix(double value)
+    { percentageToFix_ = value; }
+
+    /// Performs heuristic
+    virtual int solution(double &solutionValue, double *betterSolution);
+
+    /// sets internal variables
+    virtual void setInternalVariables(TMINLP2TNLP* minlp) = 0;
+
+    /// Selects the next variable to branch on
+    /** If bestColumn = -1, it means that no variable was found
+    */
+    virtual void selectVariableToBranch(TMINLP2TNLP* minlp,
+					const vector<int> & integerColumns,
+					const double* newSolution,
+					int& bestColumn,
+					int& bestRound) = 0;
+
+  protected:
+    /** Setup to use for local searches (will make copies).*/
+    BonminSetup * setup_; 
+
+    /// Percentage of integer variables to fix at bounds
+    double percentageToFix_;
+
+  private:
+    /// How often to do (code can change)
+    int howOften_;
+
+  };
+
+  /// checks if the NLP relaxation of the problem is feasible
+  bool isNlpFeasible(TMINLP2TNLP* minlp, const double primalTolerance);
+  
+  /// Adjusts the primalTolerance in case some of the constraints are violated
+  void adjustPrimalTolerance(TMINLP2TNLP* minlp, double & primalTolerance);
+}
+#endif