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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 type_var.h
* @ingroup TYPEDEFINITIONS
* @brief type definitions for problem variables
* @author Tobias Achterberg
*
* This file defines the interface for user variable data implemented in C. Each variable can be equipped with a
* variable data struct. This data can be accessed via the function SCIPgetVardata() at any time after it is created
* and before it is deleted.
*
* - \ref scip::ObjVardata "Corresponding C interface"
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_TYPE_VAR_H__
#define __SCIP_TYPE_VAR_H__
#ifdef __cplusplus
extern "C" {
#endif
/** status of problem variables */
enum SCIP_Varstatus
{
SCIP_VARSTATUS_ORIGINAL = 0, /**< variable belongs to original problem */
SCIP_VARSTATUS_LOOSE = 1, /**< variable is a loose variable of the transformed problem */
SCIP_VARSTATUS_COLUMN = 2, /**< variable is a column of the transformed problem */
SCIP_VARSTATUS_FIXED = 3, /**< variable is fixed to specific value in the transformed problem */
SCIP_VARSTATUS_AGGREGATED = 4, /**< variable is aggregated to x = a*y + c in the transformed problem */
SCIP_VARSTATUS_MULTAGGR = 5, /**< variable is aggregated to x = a_1*y_1 + ... + a_k*y_k + c */
SCIP_VARSTATUS_NEGATED = 6 /**< variable is the negation of an original or transformed variable */
};
typedef enum SCIP_Varstatus SCIP_VARSTATUS;
/** variable type */
enum SCIP_Vartype
{
SCIP_VARTYPE_BINARY = 0, /**< binary variable: \f$ x \in \{0,1\} \f$ */
SCIP_VARTYPE_INTEGER = 1, /**< integer variable: \f$ x in \{lb, \dots, ub\} \f$ */
SCIP_VARTYPE_IMPLINT = 2, /**< implicit integer variable: Integrality of this variable is implied for every optimal
solution of the remaining problem after any fixing all integer and binary variables,
without the explicit need to enforce integrality further */
SCIP_VARTYPE_CONTINUOUS = 3 /**< continuous variable: \f$ lb \leq x \leq ub \f$ */
};
typedef enum SCIP_Vartype SCIP_VARTYPE;
/** domain change data type */
enum SCIP_DomchgType
{
SCIP_DOMCHGTYPE_DYNAMIC = 0, /**< dynamic bound changes with size information of arrays */
SCIP_DOMCHGTYPE_BOTH = 1, /**< static domain changes: number of entries equals size of arrays */
SCIP_DOMCHGTYPE_BOUND = 2 /**< static domain changes without any hole changes */
};
typedef enum SCIP_DomchgType SCIP_DOMCHGTYPE;
/** bound change type */
enum SCIP_BoundchgType
{
SCIP_BOUNDCHGTYPE_BRANCHING = 0, /**< bound change was due to a branching decision */
SCIP_BOUNDCHGTYPE_CONSINFER = 1, /**< bound change was due to an inference of a constraint (domain propagation) */
SCIP_BOUNDCHGTYPE_PROPINFER = 2 /**< bound change was due to an inference of a domain propagator */
};
typedef enum SCIP_BoundchgType SCIP_BOUNDCHGTYPE;
/** types of variable locks */
#define NLOCKTYPES 2 /**< number of lock types */
enum SCIP_LockType
{
SCIP_LOCKTYPE_MODEL = 0, /**< variable locks for model and check constraints */
SCIP_LOCKTYPE_CONFLICT = 1 /**< variable locks for conflict constraints */
};
typedef enum SCIP_LockType SCIP_LOCKTYPE;
typedef struct SCIP_DomChgBound SCIP_DOMCHGBOUND; /**< static domain change data for bound changes */
typedef struct SCIP_DomChgBoth SCIP_DOMCHGBOTH; /**< static domain change data for bound and hole changes */
typedef struct SCIP_DomChgDyn SCIP_DOMCHGDYN; /**< dynamic domain change data for bound and hole changes */
typedef union SCIP_DomChg SCIP_DOMCHG; /**< changes in domains of variables */
typedef struct SCIP_BoundChg SCIP_BOUNDCHG; /**< changes in bounds of variables */
typedef struct SCIP_BdChgIdx SCIP_BDCHGIDX; /**< bound change index in path from root to current node */
typedef struct SCIP_BdChgInfo SCIP_BDCHGINFO; /**< bound change information to track bound changes from root to current node */
typedef struct SCIP_BranchingData SCIP_BRANCHINGDATA; /**< data for branching decision bound changes */
typedef struct SCIP_InferenceData SCIP_INFERENCEDATA; /**< data for inferred bound changes */
typedef struct SCIP_HoleChg SCIP_HOLECHG; /**< changes in holelist of variables */
typedef struct SCIP_Hole SCIP_HOLE; /**< hole in a domain of an integer variable */
typedef struct SCIP_Holelist SCIP_HOLELIST; /**< list of holes in a domain of an integer variable */
typedef struct SCIP_Dom SCIP_DOM; /**< datastructures for storing domains of variables */
typedef struct SCIP_Original SCIP_ORIGINAL; /**< original variable information */
typedef struct SCIP_Aggregate SCIP_AGGREGATE; /**< aggregation information */
typedef struct SCIP_Multaggr SCIP_MULTAGGR; /**< multiple aggregation information */
typedef struct SCIP_Negate SCIP_NEGATE; /**< negation information */
typedef struct SCIP_Var SCIP_VAR; /**< variable of the problem */
typedef struct SCIP_VarData SCIP_VARDATA; /**< user variable data */
/** frees user data of original variable (called when the original variable is freed)
*
* This method should free the user data of the original variable.
*
* input:
* - scip : SCIP main data structure
* - var : original variable the data to free is belonging to
* - vardata : pointer to the user variable data to free
*/
#define SCIP_DECL_VARDELORIG(x) SCIP_RETCODE x (SCIP* scip, SCIP_VAR* var, SCIP_VARDATA** vardata)
/** creates transformed variable for original user variable
*
* Because the original variable and the user data of the original variable should not be
* modified during the solving process, a transformed variable is created as a copy of
* the original variable. If the user variable data is never modified during the solving
* process anyways, it is enough to simple copy the user data's pointer. This is the
* default implementation, which is used when a NULL is given as VARTRANS method.
* If the user data may be modified during the solving process (e.g. during preprocessing),
* the VARTRANS method must be given and has to copy the user variable data to a different
* memory location.
*
* input:
* - scip : SCIP main data structure
* - sourcevar : original variable
* - sourcedata : source variable data to transform
* - targetvar : transformed variable
* - targetdata : pointer to store created transformed variable data
*/
#define SCIP_DECL_VARTRANS(x) SCIP_RETCODE x (SCIP* scip, SCIP_VAR* sourcevar, SCIP_VARDATA* sourcedata, SCIP_VAR* targetvar, SCIP_VARDATA** targetdata)
/** frees user data of transformed variable (called when the transformed variable is freed)
*
* This method has to be implemented, if the VARTRANS method is not a simple pointer
* copy operation like in the default VARTRANS implementation. It should free the
* user data of the transformed variable, that was created in the VARTRANS method.
*
* input:
* - scip : SCIP main data structure
* - var : transformed variable the data to free is belonging to
* - vardata : pointer to the user variable data to free
*/
#define SCIP_DECL_VARDELTRANS(x) SCIP_RETCODE x (SCIP* scip, SCIP_VAR* var, SCIP_VARDATA** vardata)
/** copies variable data of source SCIP variable for the target SCIP variable
*
* This method should copy the variable data of the source SCIP and create a target variable data for target
* variable. This callback is optimal. If the copying process was successful the target variable gets this variable
* data assigned. In case the result pointer is set to SCIP_DIDNOTRUN the target variable will have no variable data at
* all.
*
* The variable map and the constraint map can be used via the function SCIPgetVarCopy() and SCIPgetConsCopy(),
* respectively, to get for certain variables and constraints of the source SCIP the counter parts in the target
* SCIP. You should be very carefully in using these two methods since they could lead to infinity loop.
*
* input:
* - scip : target SCIP data structure
* - sourcescip : source SCIP main data structure
* - sourcevar : variable of the source SCIP
* - sourcedata : variable data of the source variable which should get copied
* - varmap, : a hashmap which stores the mapping of source variables to corresponding target variables
* - consmap, : a hashmap which stores the mapping of source constraints to corresponding target constraints
* - targetvar : variable of the (target) SCIP (targetvar is the copy of sourcevar)
* - targetdata : pointer to store created copy of the variable data for the (target) SCIP
*
* output:
* - result : pointer to store the result of the call
*
* possible return values for *result:
* - SCIP_DIDNOTRUN : the copying process was not performed
* - SCIP_SUCCESS : the copying process was successfully performed
*/
#define SCIP_DECL_VARCOPY(x) SCIP_RETCODE x (SCIP* scip, SCIP* sourcescip, SCIP_VAR* sourcevar, SCIP_VARDATA* sourcedata, \
SCIP_HASHMAP* varmap, SCIP_HASHMAP* consmap, SCIP_VAR* targetvar, SCIP_VARDATA** targetdata, SCIP_RESULT* result)
#ifdef __cplusplus
}
#endif
#endif