Scippy

    SCIP

    Solving Constraint Integer Programs

    heur_trysol.h
    Go to the documentation of this file.
    1/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
    2/* */
    3/* This file is part of the program and library */
    4/* SCIP --- Solving Constraint Integer Programs */
    5/* */
    6/* Copyright (c) 2002-2025 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 heur_trysol.h
    26 * @ingroup PRIMALHEURISTICS
    27 * @brief primal heuristic that tries a given solution
    28 * @author Marc Pfetsch
    29 *
    30 * This heuristic takes a solution from somewhere else via the function SCIPheurPassSolTrySol(). It
    31 * then tries to commit this solution. It is mainly used by cons_indicator, which tries to correct a
    32 * given solution, but cannot directly submit this solution, because it is a constraint handler and
    33 * not a heuristic.
    34 */
    35
    36/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
    37
    38#ifndef __SCIP_HEUR_TRYSOL_H__
    39#define __SCIP_HEUR_TRYSOL_H__
    40
    41#include "scip/def.h"
    42#include "scip/type_heur.h"
    43#include "scip/type_retcode.h"
    44#include "scip/type_scip.h"
    45#include "scip/type_sol.h"
    46
    47#ifdef __cplusplus
    48extern "C" {
    49#endif
    50
    51/** creates the trysol primal heuristic and includes it in SCIP
    52 *
    53 * @ingroup PrimalHeuristicIncludes
    54 */
    55SCIP_EXPORT
    57 SCIP* scip /**< SCIP data structure */
    58 );
    59
    60/**@addtogroup PRIMALHEURISTICS
    61 *
    62 * @{
    63 */
    64
    65/** pass solution to trysol heuristic */
    66SCIP_EXPORT
    68 SCIP* scip, /**< SCIP data structure */
    69 SCIP_HEUR* heur, /**< trysol heuristic */
    70 SCIP_SOL* sol /**< solution to be passed */
    71 );
    72
    73/** pass solution to trysol heuristic which just gets added (without checking feasibility */
    74SCIP_EXPORT
    76 SCIP* scip, /**< SCIP data structure */
    77 SCIP_HEUR* heur, /**< trysol heuristic */
    78 SCIP_SOL* sol /**< solution to be passed */
    79 );
    80
    81/** @} */
    82
    83#ifdef __cplusplus
    84}
    85#endif
    86
    87#endif
    common defines and data types used in all packages of SCIP
    SCIP_RETCODE SCIPheurPassSolTrySol(SCIP *scip, SCIP_HEUR *heur, SCIP_SOL *sol)
    Definition: heur_trysol.c:255
    SCIP_RETCODE SCIPheurPassSolAddSol(SCIP *scip, SCIP_HEUR *heur, SCIP_SOL *sol)
    Definition: heur_trysol.c:296
    SCIP_RETCODE SCIPincludeHeurTrySol(SCIP *scip)
    Definition: heur_trysol.c:222
    type definitions for primal heuristics
    type definitions for return codes for SCIP methods
    enum SCIP_Retcode SCIP_RETCODE
    Definition: type_retcode.h:63
    type definitions for SCIP's main datastructure
    type definitions for storing primal CIP solutions