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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_matrix.h
* @ingroup INTERNALAPI
* @brief data structure for MIP matrix
* @author Dieter Weninger
* @author Gerald Gamrath
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_STRUCT_MATRIX_H__
#define __SCIP_STRUCT_MATRIX_H__
#include "scip/def.h"
#include "scip/type_var.h"
#include "scip/type_cons.h"
#include "scip/type_matrix.h"
#ifdef __cplusplus
extern "C" {
#endif
/** constraint matrix data structure in column and row major format */
struct SCIP_Matrix
{
SCIP_Real* colmatval; /**< coefficients in column major format */
int* colmatind; /**< row indexes in column major format */
int* colmatbeg; /**< column storage offset */
int* colmatcnt; /**< number of row entries per column */
int ncols; /**< complete number of columns */
SCIP_Real* lb; /**< lower bound per variable */
SCIP_Real* ub; /**< upper bound per variable */
int* nuplocks; /**< number of up locks per variable */
int* ndownlocks; /**< number of down locks per variable */
SCIP_VAR** vars; /**< variables pointer */
SCIP_Real* rowmatval; /**< coefficients in row major format */
int* rowmatind; /**< column indexed in row major format */
int* rowmatbeg; /**< row storage offset */
int* rowmatcnt; /**< number of column entries per row */
int nrows; /**< complete number of rows */
SCIP_Real* lhs; /**< left hand side per row */
SCIP_Real* rhs; /**< right hand side per row */
SCIP_CONS** cons; /**< constraints pointer */
SCIP_Bool* isrhsinfinite; /**< is right hand side infinity */
int nnonzs; /**< sparsity counter */
SCIP_Real* minactivity; /**< min activity per row */
SCIP_Real* maxactivity; /**< max activity per row */
int* minactivityneginf; /**< min activity negative infinity counter */
int* minactivityposinf; /**< min activity positive infinity counter */
int* maxactivityneginf; /**< max activity negative infinity counter */
int* maxactivityposinf; /**< max activity positive infinity counter */
};
#ifdef __cplusplus
}
#endif
#endif