Scippy

SCIP

Solving Constraint Integer Programs

prop_rootredcost.h
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright (C) 2002-2014 Konrad-Zuse-Zentrum */
7 /* fuer Informationstechnik Berlin */
8 /* */
9 /* SCIP is distributed under the terms of the ZIB Academic License. */
10 /* */
11 /* You should have received a copy of the ZIB Academic License */
12 /* along with SCIP; see the file COPYING. If not email to scip@zib.de. */
13 /* */
14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
15 
16 /**@file prop_rootredcost.h
17  * @ingroup PROPAGATORS
18  * @brief reduced cost strengthening using root node reduced costs and the cutoff bound
19  * @author Tobias Achterberg
20  * @author Stefan Heinz
21  *
22  * This propagator uses the root reduced cost to (globally) propagate against the cutoff bound. The propagator checks if
23  * the variables with non-zero root reduced cost can exceed the cutoff bound. If this is the case the corresponding
24  * bound can be tightened.
25  *
26  * The propagate is performed during the search any time a new cutoff bound (primal solution) is found.
27  */
28 
29 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
30 
31 #ifndef __SCIP_PROP_ROOTREDCOST_H__
32 #define __SCIP_PROP_ROOTREDCOST_H__
33 
34 
35 #include "scip/scip.h"
36 
37 #ifdef __cplusplus
38 extern "C" {
39 #endif
40 
41 /** creates the root node reduced cost strengthening propagator and includes it in SCIP */
42 extern
43 SCIP_RETCODE SCIPincludePropRootredcost(
44  SCIP* scip /**< SCIP data structure */
45  );
46 
47 #ifdef __cplusplus
48 }
49 #endif
50 
51 #endif
52