1    	/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2    	/*                                                                           */
3    	/*                  This file is part of the program and library             */
4    	/*         SCIP --- Solving Constraint Integer Programs                      */
5    	/*                                                                           */
6    	/*  Copyright (c) 2002-2023 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,        */
16   	/*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
17   	/*  See the License for the specific language governing permissions and      */
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_matrix.h
26   	 * @ingroup INTERNALAPI
27   	 * @brief  data structure for MIP matrix
28   	 * @author Dieter Weninger
29   	 * @author Gerald Gamrath
30   	 */
31   	
32   	/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
33   	
34   	#ifndef __SCIP_STRUCT_MATRIX_H__
35   	#define __SCIP_STRUCT_MATRIX_H__
36   	
37   	#include "scip/def.h"
38   	#include "scip/type_var.h"
39   	#include "scip/type_cons.h"
40   	#include "scip/type_matrix.h"
41   	
42   	#ifdef __cplusplus
43   	extern "C" {
44   	#endif
45   	
46   	/** constraint matrix data structure in column and row major format */
47   	struct SCIP_Matrix
48   	{
49   	   SCIP_Real*            colmatval;          /**< coefficients in column major format */
50   	   int*                  colmatind;          /**< row indexes in column major format */
51   	   int*                  colmatbeg;          /**< column storage offset */
52   	   int*                  colmatcnt;          /**< number of row entries per column */
53   	   int                   ncols;              /**< complete number of columns */
54   	   SCIP_Real*            lb;                 /**< lower bound per variable */
55   	   SCIP_Real*            ub;                 /**< upper bound per variable */
56   	   int*                  nuplocks;           /**< number of up locks per variable */
57   	   int*                  ndownlocks;         /**< number of down locks per variable */
58   	
59   	   SCIP_VAR**            vars;               /**< variables pointer */
60   	
61   	   SCIP_Real*            rowmatval;          /**< coefficients in row major format */
62   	   int*                  rowmatind;          /**< column indexed in row major format */
63   	   int*                  rowmatbeg;          /**< row storage offset */
64   	   int*                  rowmatcnt;          /**< number of column entries per row */
65   	
66   	   int                   nrows;              /**< complete number of rows */
67   	   SCIP_Real*            lhs;                /**< left hand side per row */
68   	   SCIP_Real*            rhs;                /**< right hand side per row */
69   	
70   	   SCIP_CONS**           cons;               /**< constraints pointer */
71   	
72   	   SCIP_Bool*            isrhsinfinite;      /**< is right hand side infinity */
73   	   int                   nnonzs;             /**< sparsity counter */
74   	   SCIP_Real*            minactivity;        /**< min activity per row */
75   	   SCIP_Real*            maxactivity;        /**< max activity per row */
76   	   int*                  minactivityneginf;  /**< min activity negative infinity counter */
77   	   int*                  minactivityposinf;  /**< min activity positive infinity counter */
78   	   int*                  maxactivityneginf;  /**< max activity negative infinity counter */
79   	   int*                  maxactivityposinf;  /**< max activity positive infinity counter */
80   	};
81   	
82   	#ifdef __cplusplus
83   	}
84   	#endif
85   	
86   	#endif
87