blob: fe8181f4b7d7d546c280c3405a61844f0a973473 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
|
/* $Id: CbcFeasibilityBase.hpp 1573 2011-01-05 01:12:36Z lou $ */
// Copyright (C) 2005, International Business Machines
// Corporation and others. All Rights Reserved.
// This code is licensed under the terms of the Eclipse Public License (EPL).
#ifndef CbcFeasibilityBase_H
#define CbcFeasibilityBase_H
//#############################################################################
/* There are cases where the user wants to control how CBC sees the problems feasibility.
The user may want to examine the problem and say :
a) The default looks OK
b) Pretend this problem is Integer feasible
c) Pretend this problem is infeasible even though it looks feasible
This simple class allows user to do that.
*/
class CbcModel;
class CbcFeasibilityBase {
public:
// Default Constructor
CbcFeasibilityBase () {}
/**
On input mode:
0 - called after a solve but before any cuts
-1 - called after strong branching
Returns :
0 - no opinion
-1 pretend infeasible
1 pretend integer solution
*/
virtual int feasible(CbcModel * , int ) {
return 0;
}
virtual ~CbcFeasibilityBase() {}
// Copy constructor
CbcFeasibilityBase ( const CbcFeasibilityBase & ) {}
// Assignment operator
CbcFeasibilityBase & operator=( const CbcFeasibilityBase& ) {
return *this;
}
/// Clone
virtual CbcFeasibilityBase * clone() const {
return new CbcFeasibilityBase(*this);
}
};
#endif
|
