Scippy

SCIP

Solving Constraint Integer Programs

struct_primal.h
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1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
2 /* */
3 /* This file is part of the program and library */
4 /* SCIP --- Solving Constraint Integer Programs */
5 /* */
6 /* Copyright (C) 2002-2022 Konrad-Zuse-Zentrum */
7 /* fuer Informationstechnik Berlin */
8 /* */
9 /* SCIP is distributed under the terms of the ZIB Academic License. */
10 /* */
11 /* You should have received a copy of the ZIB Academic License */
12 /* along with SCIP; see the file COPYING. If not visit scipopt.org. */
13 /* */
14 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
15 
16 /**@file struct_primal.h
17  * @ingroup INTERNALAPI
18  * @brief datastructures for collecting primal CIP solutions and primal informations
19  * @author Tobias Achterberg
20  */
21 
22 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
23 
24 #ifndef __SCIP_STRUCT_PRIMAL_H__
25 #define __SCIP_STRUCT_PRIMAL_H__
26 
27 
28 #include "scip/def.h"
29 #include "scip/type_sol.h"
30 #include "scip/type_primal.h"
31 
32 #ifdef __cplusplus
33 extern "C" {
34 #endif
35 
36 /** primal data and solution storage */
38 {
39  SCIP_Longint nsolsfound; /**< number of primal CIP solutions found up to now */
40  SCIP_Longint nlimsolsfound; /**< number of primal CIP solutions respecting the objective limit found
41  * up to now */
42  SCIP_Longint nbestsolsfound; /**< number of new best primal CIP solutions found up to now */
43  SCIP_Longint nlimbestsolsfound; /**< number of new best primal CIP solutions respecting the objective limit
44  * found up to now */
45  SCIP_Real upperbound; /**< upper (primal) bound of CIP: objective value of best solution or user bound */
46  SCIP_Real cutoffbound; /**< upper bound for better primal solutions (if objective value is always
47  * integral, cutoffbound is equal to ceil(upperbound) - 1.0 (+eps) */
48  SCIP_SOL** sols; /**< primal CIP solutions */
49  SCIP_SOL** partialsols; /**< partial solutions */
50  SCIP_SOL** existingsols; /**< all existing primal solutions (feasible, partial, and infeasible) */
51  SCIP_SOL* currentsol; /**< internal solution for temporarily storing the current solution */
52  SCIP_SOL* primalray; /**< solution representing the primal ray for (infeasible or) unbounded problems;
53  * warning: this does not have to be a feasible solution */
54  int solssize; /**< size of sols array */
55  int partialsolssize; /**< size of partialsols array */
56  int nsols; /**< number of primal CIP solutions stored in sols array */
57  int npartialsols; /**< number of partial solutions stored in partialsol array */
58  int existingsolssize; /**< size of existingsols array */
59  int nexistingsols; /**< number of primal CIP solutions stored in existingsols array */
60 
61  SCIP_Bool updateviolations; /**< marks whether the updating of violations is turned on */
62 };
63 
64 #ifdef __cplusplus
65 }
66 #endif
67 
68 #endif
SCIP_Real cutoffbound
Definition: struct_primal.h:46
SCIP_SOL * primalray
Definition: struct_primal.h:52
int partialsolssize
Definition: struct_primal.h:55
SCIP_SOL ** sols
Definition: struct_primal.h:48
SCIP_SOL * currentsol
Definition: struct_primal.h:51
SCIP_Longint nsolsfound
Definition: struct_primal.h:39
SCIP_Bool updateviolations
Definition: struct_primal.h:61
SCIP_Longint nbestsolsfound
Definition: struct_primal.h:42
SCIP_Longint nlimbestsolsfound
Definition: struct_primal.h:43
#define SCIP_Bool
Definition: def.h:84
SCIP_SOL ** partialsols
Definition: struct_primal.h:49
type definitions for storing primal CIP solutions
SCIP_Real upperbound
Definition: struct_primal.h:45
#define SCIP_Real
Definition: def.h:177
#define SCIP_Longint
Definition: def.h:162
type definitions for collecting primal CIP solutions and primal informations
common defines and data types used in all packages of SCIP
int existingsolssize
Definition: struct_primal.h:58
SCIP_Longint nlimsolsfound
Definition: struct_primal.h:40
SCIP_SOL ** existingsols
Definition: struct_primal.h:50