Scippy

    SCIP

    Solving Constraint Integer Programs

    presol_domcol.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 */
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    12/* http://www.apache.org/licenses/LICENSE-2.0 */
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    14/* Unless required by applicable law or agreed to in writing, software */
    15/* distributed under the License is distributed on an "AS IS" BASIS, */
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    17/* See the License for the specific language governing permissions and */
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    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 presol_domcol.h
    26 * @ingroup PRESOLVERS
    27 * @brief dominated column presolver
    28 * @author Dieter Weninger
    29 *
    30 * This presolver looks for dominance relations between variable pairs.
    31 * From a dominance relation and certain bound/clique-constellations
    32 * variable fixings mostly at the lower bound of the dominated variable can be derived.
    33 * Additionally it is possible to improve bounds by predictive bound strengthening.
    34 */
    35
    36/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
    37
    38#ifndef __SCIP_PRESOL_DOMCOL_H__
    39#define __SCIP_PRESOL_DOMCOL_H__
    40
    41#include "scip/def.h"
    42#include "scip/type_retcode.h"
    43#include "scip/type_scip.h"
    44
    45#ifdef __cplusplus
    46extern "C" {
    47#endif
    48
    49/** creates the dominated column presolver and includes it in SCIP
    50 *
    51 * @ingroup PresolverIncludes
    52 */
    53SCIP_EXPORT
    55 SCIP* scip /**< SCIP data structure */
    56 );
    57
    58#ifdef __cplusplus
    59}
    60#endif
    61
    62#endif
    common defines and data types used in all packages of SCIP
    SCIP_RETCODE SCIPincludePresolDomcol(SCIP *scip)
    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