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) 2002-2023 Zuse Institute Berlin (ZIB) */
7 /* */
8 /* Licensed under the Apache License, Version 2.0 (the "License"); */
9 /* you may not use this file except in compliance with the License. */
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19 /* */
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21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
22 /* */
23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24 
25 /**@file prop_rootredcost.h
26  * @ingroup PROPAGATORS
27  * @brief reduced cost strengthening using root node reduced costs and the cutoff bound
28  * @author Tobias Achterberg
29  * @author Stefan Heinz
30  *
31  * This propagator uses the root reduced cost to (globally) propagate against the cutoff bound. The propagator checks if
32  * the variables with non-zero root reduced cost can exceed the cutoff bound. If this is the case the corresponding
33  * bound can be tightened.
34  *
35  * The propagate is performed during the search any time a new cutoff bound (primal solution) is found.
36  */
37 
38 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
39 
40 #ifndef __SCIP_PROP_ROOTREDCOST_H__
41 #define __SCIP_PROP_ROOTREDCOST_H__
42 
43 #include "scip/def.h"
44 #include "scip/type_retcode.h"
45 #include "scip/type_scip.h"
46 
47 #ifdef __cplusplus
48 extern "C" {
49 #endif
50 
51 /** creates the root node reduced cost strengthening propagator and includes it in SCIP
52  *
53  * @ingroup PropagatorIncludes
54  */
55 SCIP_EXPORT
57  SCIP* scip /**< SCIP data structure */
58  );
59 
60 #ifdef __cplusplus
61 }
62 #endif
63 
64 #endif
enum SCIP_Retcode SCIP_RETCODE
Definition: type_retcode.h:63
type definitions for return codes for SCIP methods
SCIP_RETCODE SCIPincludePropRootredcost(SCIP *scip)
type definitions for SCIP&#39;s main datastructure
common defines and data types used in all packages of SCIP