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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* */
/* This file is part of the program and library */
/* SCIP --- Solving Constraint Integer Programs */
/* */
/* Copyright 2002-2022 Zuse Institute Berlin */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, software */
/* distributed under the License is distributed on an "AS IS" BASIS, */
/* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/* See the License for the specific language governing permissions and */
/* limitations under the License. */
/* */
/* You should have received a copy of the Apache-2.0 license */
/* along with SCIP; see the file LICENSE. If not visit scipopt.org. */
/* */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/**@file struct_presol.h
* @ingroup INTERNALAPI
* @brief datastructures for presolvers
* @author Tobias Achterberg
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_STRUCT_PRESOL_H__
#define __SCIP_STRUCT_PRESOL_H__
#include "scip/def.h"
#include "scip/type_clock.h"
#include "scip/type_presol.h"
#ifdef __cplusplus
extern "C" {
#endif
/** presolver */
struct SCIP_Presol
{
char* name; /**< name of presolver */
char* desc; /**< description of presolver */
SCIP_DECL_PRESOLCOPY ((*presolcopy)); /**< copy method of presolver or NULL if you don't want to copy your plugin into sub-SCIPs */
SCIP_DECL_PRESOLFREE ((*presolfree)); /**< destructor of presolver to free user data (called when SCIP is exiting) */
SCIP_DECL_PRESOLINIT ((*presolinit)); /**< initialization method of presolver (called after problem was transformed) */
SCIP_DECL_PRESOLEXIT ((*presolexit)); /**< deinitialization method of presolver (called before transformed problem is freed) */
SCIP_DECL_PRESOLINITPRE((*presolinitpre));/**< presolving initialization method of presolver (called when presolving is about to begin) */
SCIP_DECL_PRESOLEXITPRE((*presolexitpre));/**< presolving deinitialization method of presolver (called after presolving has been finished) */
SCIP_DECL_PRESOLEXEC ((*presolexec)); /**< execution method of presolver */
SCIP_PRESOLDATA* presoldata; /**< presolver data */
SCIP_CLOCK* setuptime; /**< time spend for setting up this presolver for the next stages */
SCIP_CLOCK* presolclock; /**< presolving time */
int priority; /**< priority of the presolver */
int maxrounds; /**< maximal number of presolving rounds the presolver participates in (-1: no limit) */
int lastnfixedvars; /**< number of variables fixed before the last call to the presolver */
int lastnaggrvars; /**< number of variables aggregated before the last call to the presolver */
int lastnchgvartypes; /**< number of variable type changes before the last call to the presolver */
int lastnchgbds; /**< number of variable bounds tightened before the last call to the presolver */
int lastnaddholes; /**< number of domain holes added before the last call to the presolver */
int lastndelconss; /**< number of deleted constraints before the last call to the presolver */
int lastnaddconss; /**< number of added constraints before the last call to the presolver */
int lastnupgdconss; /**< number of upgraded constraints before the last call to the presolver */
int lastnchgcoefs; /**< number of changed coefficients before the last call to the presolver */
int lastnchgsides; /**< number of changed left or right hand sides before the last call */
int nfixedvars; /**< total number of variables fixed by this presolver */
int naggrvars; /**< total number of variables aggregated by this presolver */
int nchgvartypes; /**< total number of variable type changes by this presolver */
int nchgbds; /**< total number of variable bounds tightened by this presolver */
int naddholes; /**< total number of domain holes added by this presolver */
int ndelconss; /**< total number of deleted constraints by this presolver */
int naddconss; /**< total number of added constraints by this presolver */
int nupgdconss; /**< total number of upgraded constraints by this presolver */
int nchgcoefs; /**< total number of changed coefficients by this presolver */
int nchgsides; /**< total number of changed left or right hand sides by this presolver */
int ncalls; /**< number of times the presolver was called and tried to find reductions */
SCIP_Bool initialized; /**< is presolver initialized? */
SCIP_PRESOLTIMING timing; /**< timing of the presolver */
};
#ifdef __cplusplus
}
#endif
#endif