Scippy

SCIP

Solving Constraint Integer Programs

type_reopt.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) 2002-2020 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 visit scipopt.org. */
13 /* */
14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
15 
16 /**@file type_reopt.h
17  * @brief type definitions for collecting reoptimization information
18  * @author Jakob Witzig
19  */
20 
21 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
22 
23 #ifndef __SCIP_TYPE_REOPT_H__
24 #define __SCIP_TYPE_REOPT_H__
25 
26 #ifdef __cplusplus
27 extern "C" {
28 #endif
29 
30 typedef struct SCIP_Reopt SCIP_REOPT; /**< reopt data */
31 
32 typedef struct SCIP_SolTree SCIP_SOLTREE; /**< tree to check solutions */
33 
34 typedef struct SCIP_SolNode SCIP_SOLNODE; /**< nodes of SCIP_SOLTREE */
35 
36 typedef struct SCIP_ReoptTree SCIP_REOPTTREE; /**< data structure to store the search tree */
37 
38 typedef struct SCIP_ReoptNode SCIP_REOPTNODE; /**< nodes of SCIP_REOPTTREE */
39 
40 typedef struct SCIP_ReoptNode SCIP_REPRESENTATIVE;/**< representatives of the search frontier */
41 
42 typedef struct SCIP_ReoptConsData SCIP_REOPTCONSDATA; /**< data for constraints to handle dual information \
43  * within (mixed) binary programs
44  */
45 
46 /* type of nodes during reoptimization */
48 {
49  SCIP_REOPTTYPE_NONE = 0, /**< node is not part of the reoptimizationtree */
50  SCIP_REOPTTYPE_TRANSIT = 1, /**< node is only needed for reconstructing the tree */
51  SCIP_REOPTTYPE_INFSUBTREE = 2, /**< node contains dual reductions which leed to LP infeasibility */
52  SCIP_REOPTTYPE_STRBRANCHED = 3, /**< node contains dual reductions */
53  SCIP_REOPTTYPE_LOGICORNODE = 4, /**< node contains additional constraints */
54  SCIP_REOPTTYPE_LEAF = 5, /**< node is a leaf node */
55  SCIP_REOPTTYPE_PRUNED = 6, /**< node is a leaf node and pruned by boudning */
56  SCIP_REOPTTYPE_FEASIBLE = 7 /**< node is a leaf node and has an integral optimal LP solution */
57 };
58 typedef enum SCIP_ReoptType SCIP_REOPTTYPE; /**< type nodes during reoptimization */
59 
61 {
62  REOPT_CONSTYPE_INFSUBTREE = 0, /**< constraint cutoffs an LP infeasible subtree */
63  REOPT_CONSTYPE_DUALREDS = 1, /**< constraint reconstructs dual reductions */
64  REOPT_CONSTYPE_CUT = 2, /**< constraint representing a cut, e.g., to separate a solution */
65  REOPT_CONSTYPE_UNKNOWN = 3 /**< constraint was added by SCIP, e.g., a (local) conflict */
66 };
67 typedef enum Reopt_ConsType REOPT_CONSTYPE; /**< tye of constraunts added during reoptimization */
68 
69 #ifdef __cplusplus
70 }
71 #endif
72 
73 #endif
struct SCIP_ReoptConsData SCIP_REOPTCONSDATA
Definition: type_reopt.h:42
Reopt_ConsType
Definition: type_reopt.h:60
enum SCIP_ReoptType SCIP_REOPTTYPE
Definition: type_reopt.h:58
SCIP_ReoptType
Definition: type_reopt.h:47
enum Reopt_ConsType REOPT_CONSTYPE
Definition: type_reopt.h:67