cbcintlinprog added

1 files changed, 114 insertions, 0 deletions

diff --git a/thirdparty/linux/include/coin/CbcSimpleIntegerPseudoCost.hpp b/thirdparty/linux/include/coin/CbcSimpleIntegerPseudoCost.hpp
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+++ b/thirdparty/linux/include/coin/CbcSimpleIntegerPseudoCost.hpp
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+// $Id: CbcSimpleIntegerPseudoCost.hpp 1899 2013-04-09 18:12:08Z stefan $
+// Copyright (C) 2002, International Business Machines
+// Corporation and others.  All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+// Edwin 11/10/2009-- carved out of CbcBranchActual
+
+#ifndef CbcSimpleIntegerPseudoCost_H
+#define CbcSimpleIntegerPseudoCost_H
+
+#include "CbcSimpleInteger.hpp"
+/// Define a single integer class but with pseudo costs
+
+class CbcSimpleIntegerPseudoCost : public CbcSimpleInteger {
+
+public:
+
+    // Default Constructor
+    CbcSimpleIntegerPseudoCost ();
+
+    // Useful constructor - passed model index
+    CbcSimpleIntegerPseudoCost (CbcModel * model, int iColumn, double breakEven = 0.5);
+
+    // Useful constructor - passed and model index and pseudo costs
+    CbcSimpleIntegerPseudoCost (CbcModel * model, int iColumn,
+                                double downPseudoCost, double upPseudoCost);
+    // Useful constructor - passed and model index and pseudo costs
+    CbcSimpleIntegerPseudoCost (CbcModel * model, int dummy, int iColumn,
+                                double downPseudoCost, double upPseudoCost);
+
+    // Copy constructor
+    CbcSimpleIntegerPseudoCost ( const CbcSimpleIntegerPseudoCost &);
+
+    /// Clone
+    virtual CbcObject * clone() const;
+
+    // Assignment operator
+    CbcSimpleIntegerPseudoCost & operator=( const CbcSimpleIntegerPseudoCost& rhs);
+
+    // Destructor
+    virtual ~CbcSimpleIntegerPseudoCost ();
+
+    /// Infeasibility - large is 0.5
+    virtual double infeasibility(const OsiBranchingInformation * info,
+                                 int &preferredWay) const;
+
+    /// Creates a branching object
+    virtual CbcBranchingObject * createCbcBranch(OsiSolverInterface * solver, const OsiBranchingInformation * info, int way) ;
+
+    /// Down pseudo cost
+    inline double downPseudoCost() const {
+        return downPseudoCost_;
+    }
+    /// Set down pseudo cost
+    inline void setDownPseudoCost(double value) {
+        downPseudoCost_ = value;
+    }
+
+    /// Up pseudo cost
+    inline double upPseudoCost() const {
+        return upPseudoCost_;
+    }
+    /// Set up pseudo cost
+    inline void setUpPseudoCost(double value) {
+        upPseudoCost_ = value;
+    }
+
+    /// Up down separator
+    inline double upDownSeparator() const {
+        return upDownSeparator_;
+    }
+    /// Set up down separator
+    inline void setUpDownSeparator(double value) {
+        upDownSeparator_ = value;
+    }
+
+    /// Return "up" estimate
+    virtual double upEstimate() const;
+    /// Return "down" estimate (default 1.0e-5)
+    virtual double downEstimate() const;
+
+    /// method - see below for details
+    inline int method() const {
+        return method_;
+    }
+    /// Set method
+    inline void setMethod(int value) {
+        method_ = value;
+    }
+
+protected:
+    /// data
+
+    /// Down pseudo cost
+    double downPseudoCost_;
+    /// Up pseudo cost
+    double upPseudoCost_;
+    /** Up/down separator
+        If >0.0 then do first branch up if value-floor(value)
+        >= this value
+    */
+    double upDownSeparator_;
+    /** Method -
+        0 - normal - return min (up,down)
+        1 - if before any solution return CoinMax(up,down)
+        2 - if before branched solution return CoinMax(up,down)
+        3 - always return CoinMax(up,down)
+    */
+    int method_;
+};
+
+
+#endif
+