source: trunk/Cbc/src/CbcHeuristicDiveFractional.hpp @ 944

Last change on this file since 944 was 944, checked in by jpgoncal, 11 years ago

Added reduced cost fixing.

File size: 1.3 KB
Line 
1// Copyright (C) 2008, International Business Machines
2// Corporation and others.  All Rights Reserved.
3#ifndef CbcHeuristicDiveFractional_H
4#define CbcHeuristicDiveFractional_H
5
6#include "CbcHeuristicDive.hpp"
7
8/** DiveFractional class
9 */
10
11class CbcHeuristicDiveFractional : public CbcHeuristicDive {
12public:
13
14  // Default Constructor
15  CbcHeuristicDiveFractional ();
16
17  // Constructor with model - assumed before cuts
18  CbcHeuristicDiveFractional (CbcModel & model);
19 
20  // Copy constructor
21  CbcHeuristicDiveFractional ( const CbcHeuristicDiveFractional &);
22   
23  // Destructor
24  ~CbcHeuristicDiveFractional ();
25
26  /// Clone
27  virtual CbcHeuristicDiveFractional * clone() const;
28 
29  /// Assignment operator
30  CbcHeuristicDiveFractional & operator=(const CbcHeuristicDiveFractional& rhs);
31
32  /// Create C++ lines to get to current state
33  virtual void generateCpp( FILE * fp) ;
34
35  /// Selects the next variable to branch on
36  /** Returns true if all the fractional variables can be trivially
37      rounded. Returns false, if there is at least one fractional variable
38      that is not trivially roundable. In this case, the bestColumn
39      returned will not be trivially roundable.
40  */
41  virtual bool selectVariableToBranch(OsiSolverInterface* solver,
42                                      const double* newSolution,
43                                      int& bestColumn,
44                                      int& bestRound);
45
46};
47
48#endif
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