Scippy

SCIP

Solving Constraint Integer Programs

type_sol.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) 2002-2024 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 type_sol.h
26 * @brief type definitions for storing primal CIP solutions
27 * @author Tobias Achterberg
28 */
29
30/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
31
32#ifndef __SCIP_TYPE_SOL_H__
33#define __SCIP_TYPE_SOL_H__
34
35#ifdef __cplusplus
36extern "C" {
37#endif
38
39/** origin of solution: where to retrieve uncached elements */
41{
42 SCIP_SOLORIGIN_ORIGINAL = 0, /**< solution describes original variables; non-cached elements are zero */
43 SCIP_SOLORIGIN_ZERO = 1, /**< all non-cached elements in solution are equal to zero */
44 SCIP_SOLORIGIN_LPSOL = 2, /**< all non-cached elements in solution are equal to current LP solution */
45 SCIP_SOLORIGIN_NLPSOL = 3, /**< all non-cached elements in solution are equal to current NLP solution */
46 SCIP_SOLORIGIN_RELAXSOL = 4, /**< all non-cached elements in solution are equal to current relaxation solution */
47 SCIP_SOLORIGIN_PSEUDOSOL = 5, /**< all non-cached elements in solution are equal to current pseudo solution */
48 SCIP_SOLORIGIN_PARTIAL = 6, /**< solution describes original solution; all non-cached elements in solution
49 * are treated as being an arbitrary value in the variable's bounds
50 */
51 SCIP_SOLORIGIN_UNKNOWN = 7 /**< all non-cached elements in solution are unknown; they have to be treated
52 * as being an arbitrary value in the variable's bounds
53 */
54};
56
57typedef struct SCIP_Sol SCIP_SOL; /**< primal CIP solution */
58
59typedef struct SCIP_Viol SCIP_VIOL; /**< maximum violations of problem constraints */
60
61/** type of solution: heuristic or (LP) relaxation solution, or unspecified origin */
63{
64 SCIP_SOLTYPE_UNKNOWN = 0, /**< type of solution unspecified (the default) */
65 SCIP_SOLTYPE_HEUR = 1, /**< solution was found by a heuristic */
66 SCIP_SOLTYPE_RELAX = 2, /**< solution was found by a relaxation */
67 SCIP_SOLTYPE_LPRELAX = 3, /**< solution was found by the LP relaxation */
68 SCIP_SOLTYPE_STRONGBRANCH = 4, /**< solution was found during strong branching */
69 SCIP_SOLTYPE_PSEUDO = 5 /**< solution originates from a pseudo solution */
70};
72
73#ifdef __cplusplus
74}
75#endif
76
77#endif
SCIP_SolType
Definition: type_sol.h:63
@ SCIP_SOLTYPE_HEUR
Definition: type_sol.h:65
@ SCIP_SOLTYPE_STRONGBRANCH
Definition: type_sol.h:68
@ SCIP_SOLTYPE_RELAX
Definition: type_sol.h:66
@ SCIP_SOLTYPE_PSEUDO
Definition: type_sol.h:69
@ SCIP_SOLTYPE_LPRELAX
Definition: type_sol.h:67
@ SCIP_SOLTYPE_UNKNOWN
Definition: type_sol.h:64
SCIP_SolOrigin
Definition: type_sol.h:41
@ SCIP_SOLORIGIN_ZERO
Definition: type_sol.h:43
@ SCIP_SOLORIGIN_UNKNOWN
Definition: type_sol.h:51
@ SCIP_SOLORIGIN_RELAXSOL
Definition: type_sol.h:46
@ SCIP_SOLORIGIN_PSEUDOSOL
Definition: type_sol.h:47
@ SCIP_SOLORIGIN_LPSOL
Definition: type_sol.h:44
@ SCIP_SOLORIGIN_PARTIAL
Definition: type_sol.h:48
@ SCIP_SOLORIGIN_ORIGINAL
Definition: type_sol.h:42
@ SCIP_SOLORIGIN_NLPSOL
Definition: type_sol.h:45
enum SCIP_SolType SCIP_SOLTYPE
Definition: type_sol.h:71
enum SCIP_SolOrigin SCIP_SOLORIGIN
Definition: type_sol.h:55