QG.h

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//
// Minotaur -- It's only half bull!
//
// (C)opyright 2009 - 2025 The Minotaur Team.
//
 
#ifndef QG_H
#define QG_H
 
#include "Types.h"
#include "AMPLInterface.h"
#include "BranchAndBound.h"
#include "LPEngine.h"
#include "Presolver.h"
#include "Solver.h"
 
namespace Minotaur {
  class QG : public Solver {
    public:
      QG(EnvPtr env);
 
      ~QG();
 
      void doSetup();
 
      void sepDetection();
 
      void showHelp() const;
 
      int showInfo();
 
      virtual int solve(ProblemPtr p);
 
      virtual SolveStatus getStatus() {return status_;};
 
      virtual SolutionPtr getSolution() {return sol_;};
 
      double getUb() {return ub_;};
 
      double getLb() {return lb_;};
 
    private:
      const static std::string me_;
      double objSense_;
      SolutionPtr sol_;
      double lb_, ub_;
      ProblemPtr oinst_;
      SolveStatus status_;
 
      int getEngines_(Engine **nlp_e, LPEngine **lp_e);
      PresolverPtr presolve_(HandlerVector &handlers);
      void setInitialOptions_();
      int writeBnbStatus_(BranchAndBound *bab);
  };
}
#endif