Scippy

SCIP

Solving Constraint Integer Programs

presol_domcol.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 presol_domcol.h
17  * @brief dominated column presolver
18  * @author Dieter Weninger
19  *
20  * This presolver looks for dominance relations between variable pairs.
21  * From a dominance relation and certain bound/clique-constellations
22  * variable fixings mostly at the lower bound of the dominated variable can be derived.
23  * Additionally it is possible to improve bounds by predictive bound strengthening.
24  */
25 
26 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
27 
28 #ifndef __SCIP_PRESOL_DOMCOL_H__
29 #define __SCIP_PRESOL_DOMCOL_H__
30 
31 
32 #include "scip/scip.h"
33 
34 #ifdef __cplusplus
35 extern "C" {
36 #endif
37 
38 /** creates the dominated column presolver and includes it in SCIP */
39 extern
40 SCIP_RETCODE SCIPincludePresolDomcol(
41  SCIP* scip /**< SCIP data structure */
42  );
43 
44 #ifdef __cplusplus
45 }
46 #endif
47 
48 #endif
49