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+/* $Id: CbcFathom.hpp 1889 2013-04-07 13:46:46Z stefan $ */
+// Copyright (C) 2004, International Business Machines
+// Corporation and others.  All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+#ifndef CbcFathom_H
+#define CbcFathom_H
+#include "CbcConfig.h"
+
+/*
+  This file contains two classes, CbcFathom and CbcOsiSolver. It's unclear why
+  they're in the same file. CbcOsiSolver is a base class for CbcLinked.
+
+  --lh, 071031 --
+*/
+
+
+class CbcModel;
+
+//#############################################################################
+/** Fathom base class.
+
+    The idea is that after some branching the problem will be effectively smaller than
+    the original problem and maybe there will be a more specialized technique which can completely
+    fathom this branch quickly.
+
+    One method is to presolve the problem to give a much smaller new problem and then do branch
+    and cut on that.  Another might be dynamic programming.
+
+ */
+
+class CbcFathom {
+public:
+    // Default Constructor
+    CbcFathom ();
+
+    // Constructor with model - assumed before cuts
+    CbcFathom (CbcModel & model);
+
+    virtual ~CbcFathom();
+
+    /// update model (This is needed if cliques update matrix etc)
+    virtual void setModel(CbcModel * model);
+
+    /// Clone
+    virtual CbcFathom * clone() const = 0;
+
+    /// Resets stuff if model changes
+    virtual void resetModel(CbcModel * model) = 0;
+
+    /** returns 0 if no fathoming attempted, 1 fully fathomed,
+        2 incomplete search, 3 incomplete search but treat as complete.
+        If solution then newSolution will not be NULL and
+        will be freed by CbcModel.  It is expected that the solution is better
+        than best so far but CbcModel will double check.
+
+        If returns 3 then of course there is no guarantee of global optimum
+    */
+    virtual int fathom(double *& newSolution) = 0;
+
+    // Is this method possible
+    inline bool possible() const {
+        return possible_;
+    }
+
+protected:
+
+    /// Model
+    CbcModel * model_;
+    /// Possible - if this method of fathoming can be used
+    bool possible_;
+private:
+
+    /// Illegal Assignment operator
+    CbcFathom & operator=(const CbcFathom& rhs);
+
+};
+
+#include "OsiClpSolverInterface.hpp"
+
+//#############################################################################
+
+/**
+
+This is for codes where solver needs to know about CbcModel
+  Seems to provide only one value-added feature, a CbcModel object.
+
+*/
+
+class CbcOsiSolver : public OsiClpSolverInterface {
+
+public:
+
+    /**@name Constructors and destructors */
+    //@{
+    /// Default Constructor
+    CbcOsiSolver ();
+
+    /// Clone
+    virtual OsiSolverInterface * clone(bool copyData = true) const;
+
+    /// Copy constructor
+    CbcOsiSolver (const CbcOsiSolver &);
+
+    /// Assignment operator
+    CbcOsiSolver & operator=(const CbcOsiSolver& rhs);
+
+    /// Destructor
+    virtual ~CbcOsiSolver ();
+
+    //@}
+
+
+    /**@name Sets and Gets */
+    //@{
+    /// Set Cbc Model
+    inline void setCbcModel(CbcModel * model) {
+        cbcModel_ = model;
+    }
+    /// Return Cbc Model
+    inline CbcModel * cbcModel() const {
+        return cbcModel_;
+    }
+    //@}
+
+    //---------------------------------------------------------------------------
+
+protected:
+
+
+    /**@name Private member data */
+    //@{
+    /// Pointer back to CbcModel
+    CbcModel * cbcModel_;
+    //@}
+};
+#endif