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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_lp.h
* @brief type definitions for LP management
* @author Tobias Achterberg
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_TYPE_LP_H__
#define __SCIP_TYPE_LP_H__
#ifdef __cplusplus
extern "C" {
#endif
/** solution status after solving LP */
enum SCIP_LPSolStat
{
SCIP_LPSOLSTAT_NOTSOLVED = 0, /**< LP was not solved, no solution exists */
SCIP_LPSOLSTAT_OPTIMAL = 1, /**< LP was solved to optimality */
SCIP_LPSOLSTAT_INFEASIBLE = 2, /**< LP is primal infeasible */
SCIP_LPSOLSTAT_UNBOUNDEDRAY = 3, /**< LP has a primal unbounded ray */
SCIP_LPSOLSTAT_OBJLIMIT = 4, /**< objective limit was reached during optimization */
SCIP_LPSOLSTAT_ITERLIMIT = 5, /**< iteration limit was reached during optimization */
SCIP_LPSOLSTAT_TIMELIMIT = 6, /**< time limit was reached during optimization */
SCIP_LPSOLSTAT_ERROR = 7 /**< an error occured during optimization */
};
typedef enum SCIP_LPSolStat SCIP_LPSOLSTAT;
/** type of variable bound: lower or upper bound */
enum SCIP_BoundType
{
SCIP_BOUNDTYPE_LOWER = 0, /**< lower bound */
SCIP_BOUNDTYPE_UPPER = 1 /**< upper bound */
};
typedef enum SCIP_BoundType SCIP_BOUNDTYPE;
/** type of row side: left hand or right hand side */
enum SCIP_SideType
{
SCIP_SIDETYPE_LEFT = 0, /**< left hand side */
SCIP_SIDETYPE_RIGHT = 1 /**< right hand side */
};
typedef enum SCIP_SideType SCIP_SIDETYPE;
/** type of origin of row */
enum SCIP_RowOriginType
{
SCIP_ROWORIGINTYPE_UNSPEC = 0, /**< unspecified origin of row */
SCIP_ROWORIGINTYPE_CONSHDLR = 1, /**< row created by a constraint handler */
SCIP_ROWORIGINTYPE_CONS = 2, /**< row created by a constraint */
SCIP_ROWORIGINTYPE_SEPA = 3, /**< row created by separator */
SCIP_ROWORIGINTYPE_REOPT = 4 /**< row created by reoptimization */
};
typedef enum SCIP_RowOriginType SCIP_ROWORIGINTYPE;
/** type of LP algorithm */
enum SCIP_LPAlgo
{
SCIP_LPALGO_PRIMALSIMPLEX = 0, /**< primal simplex */
SCIP_LPALGO_DUALSIMPLEX = 1, /**< dual simplex */
SCIP_LPALGO_BARRIER = 2, /**< barrier algorithm */
SCIP_LPALGO_BARRIERCROSSOVER = 3 /**< barrier algorithm with crossover */
};
typedef enum SCIP_LPAlgo SCIP_LPALGO;
typedef struct SCIP_ColSolVals SCIP_COLSOLVALS; /**< collected values of a column which depend on the LP solution */
typedef struct SCIP_RowSolVals SCIP_ROWSOLVALS; /**< collected values of a row which depend on the LP solution */
typedef struct SCIP_LpSolVals SCIP_LPSOLVALS; /**< collected values of the LP data which depend on the LP solution */
/** column of an LP
*
* - \ref PublicColumnMethods "List of all available methods"
*/
typedef struct SCIP_Col SCIP_COL;
/** row of an LP
*
* - \ref PublicRowMethods "List of all available methods"
*/
typedef struct SCIP_Row SCIP_ROW;
/** LP structure
*
* - \ref PublicLPMethods "List of all available methods"
*/
typedef struct SCIP_Lp SCIP_LP;
#ifdef __cplusplus
}
#endif
#endif