Scippy

SCIP

Solving Constraint Integer Programs

struct_presol.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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21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
22 /* */
23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
24 
25 /**@file struct_presol.h
26  * @ingroup INTERNALAPI
27  * @brief datastructures for presolvers
28  * @author Tobias Achterberg
29  */
30 
31 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
32 
33 #ifndef __SCIP_STRUCT_PRESOL_H__
34 #define __SCIP_STRUCT_PRESOL_H__
35 
36 
37 #include "scip/def.h"
38 #include "scip/type_clock.h"
39 #include "scip/type_presol.h"
40 
41 #ifdef __cplusplus
42 extern "C" {
43 #endif
44 
45 /** presolver */
47 {
48  char* name; /**< name of presolver */
49  char* desc; /**< description of presolver */
50  SCIP_DECL_PRESOLCOPY ((*presolcopy)); /**< copy method of presolver or NULL if you don't want to copy your plugin into sub-SCIPs */
51  SCIP_DECL_PRESOLFREE ((*presolfree)); /**< destructor of presolver to free user data (called when SCIP is exiting) */
52  SCIP_DECL_PRESOLINIT ((*presolinit)); /**< initialization method of presolver (called after problem was transformed) */
53  SCIP_DECL_PRESOLEXIT ((*presolexit)); /**< deinitialization method of presolver (called before transformed problem is freed) */
54  SCIP_DECL_PRESOLINITPRE((*presolinitpre));/**< presolving initialization method of presolver (called when presolving is about to begin) */
55  SCIP_DECL_PRESOLEXITPRE((*presolexitpre));/**< presolving deinitialization method of presolver (called after presolving has been finished) */
56  SCIP_DECL_PRESOLEXEC ((*presolexec)); /**< execution method of presolver */
57  SCIP_PRESOLDATA* presoldata; /**< presolver data */
58  SCIP_CLOCK* setuptime; /**< time spend for setting up this presolver for the next stages */
59  SCIP_CLOCK* presolclock; /**< presolving time */
60  int priority; /**< priority of the presolver */
61  int maxrounds; /**< maximal number of presolving rounds the presolver participates in (-1: no limit) */
62  int lastnfixedvars; /**< number of variables fixed before the last call to the presolver */
63  int lastnaggrvars; /**< number of variables aggregated before the last call to the presolver */
64  int lastnchgvartypes; /**< number of variable type changes before the last call to the presolver */
65  int lastnchgbds; /**< number of variable bounds tightened before the last call to the presolver */
66  int lastnaddholes; /**< number of domain holes added before the last call to the presolver */
67  int lastndelconss; /**< number of deleted constraints before the last call to the presolver */
68  int lastnaddconss; /**< number of added constraints before the last call to the presolver */
69  int lastnupgdconss; /**< number of upgraded constraints before the last call to the presolver */
70  int lastnchgcoefs; /**< number of changed coefficients before the last call to the presolver */
71  int lastnchgsides; /**< number of changed left or right hand sides before the last call */
72  int nfixedvars; /**< total number of variables fixed by this presolver */
73  int naggrvars; /**< total number of variables aggregated by this presolver */
74  int nchgvartypes; /**< total number of variable type changes by this presolver */
75  int nchgbds; /**< total number of variable bounds tightened by this presolver */
76  int naddholes; /**< total number of domain holes added by this presolver */
77  int ndelconss; /**< total number of deleted constraints by this presolver */
78  int naddconss; /**< total number of added constraints by this presolver */
79  int nupgdconss; /**< total number of upgraded constraints by this presolver */
80  int nchgcoefs; /**< total number of changed coefficients by this presolver */
81  int nchgsides; /**< total number of changed left or right hand sides by this presolver */
82  int ncalls; /**< number of times the presolver was called and tried to find reductions */
83  SCIP_Bool initialized; /**< is presolver initialized? */
84  SCIP_PRESOLTIMING timing; /**< timing of the presolver */
85 };
86 
87 #ifdef __cplusplus
88 }
89 #endif
90 
91 #endif
int lastnfixedvars
Definition: struct_presol.h:62
struct SCIP_PresolData SCIP_PRESOLDATA
Definition: type_presol.h:51
SCIP_PRESOLTIMING timing
Definition: struct_presol.h:84
SCIP_CLOCK * presolclock
Definition: struct_presol.h:59
SCIP_DECL_PRESOLEXEC((*presolexec))
int lastnupgdconss
Definition: struct_presol.h:69
type definitions for presolvers
SCIP_CLOCK * setuptime
Definition: struct_presol.h:58
SCIP_DECL_PRESOLINIT((*presolinit))
SCIP_DECL_PRESOLCOPY((*presolcopy))
unsigned int SCIP_PRESOLTIMING
Definition: type_timing.h:61
SCIP_DECL_PRESOLFREE((*presolfree))
#define SCIP_Bool
Definition: def.h:93
int lastnchgvartypes
Definition: struct_presol.h:64
SCIP_Bool initialized
Definition: struct_presol.h:83
SCIP_DECL_PRESOLEXITPRE((*presolexitpre))
type definitions for clocks and timing issues
SCIP_PRESOLDATA * presoldata
Definition: struct_presol.h:57
SCIP_DECL_PRESOLEXIT((*presolexit))
common defines and data types used in all packages of SCIP
SCIP_DECL_PRESOLINITPRE((*presolinitpre))