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) 2002-2024 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. */
10/* You may obtain a copy of the License at */
11/* */
12/* http://www.apache.org/licenses/LICENSE-2.0 */
13/* */
14/* Unless required by applicable law or agreed to in writing, software */
15/* distributed under the License is distributed on an "AS IS" BASIS, */
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18/* limitations under the License. */
19/* */
20/* You should have received a copy of the Apache-2.0 license */
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
42extern "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
common defines and data types used in all packages of SCIP
#define SCIP_Bool
Definition: def.h:91
SCIP_CLOCK * setuptime
Definition: struct_presol.h:58
int lastnfixedvars
Definition: struct_presol.h:62
int lastnchgvartypes
Definition: struct_presol.h:64
int lastnupgdconss
Definition: struct_presol.h:69
SCIP_DECL_PRESOLCOPY((*presolcopy))
SCIP_Bool initialized
Definition: struct_presol.h:83
SCIP_DECL_PRESOLFREE((*presolfree))
SCIP_DECL_PRESOLEXIT((*presolexit))
SCIP_CLOCK * presolclock
Definition: struct_presol.h:59
SCIP_DECL_PRESOLEXITPRE((*presolexitpre))
SCIP_DECL_PRESOLINIT((*presolinit))
SCIP_DECL_PRESOLEXEC((*presolexec))
SCIP_DECL_PRESOLINITPRE((*presolinitpre))
SCIP_PRESOLTIMING timing
Definition: struct_presol.h:84
SCIP_PRESOLDATA * presoldata
Definition: struct_presol.h:57
type definitions for clocks and timing issues
type definitions for presolvers
struct SCIP_PresolData SCIP_PRESOLDATA
Definition: type_presol.h:51
unsigned int SCIP_PRESOLTIMING
Definition: type_timing.h:61