Scippy

    SCIP

    Solving Constraint Integer Programs

    branch_multaggr.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 branch_multaggr.h
    26 * @ingroup BRANCHINGRULES
    27 * @brief fullstrong branching on fractional and multi-aggregated variables
    28 * @author Anna Melchiori
    29 * @author Gerald Gamrath
    30 *
    31 * This branching rule uses all fractional binary and integer variables as candidates,
    32 * as well as fractional multiaggregated binary and integer variables. Although not
    33 * directly contained in the presolved problem anymore, the multi-aggregation provides
    34 * an affine linear sum of integer variables, on which branching can be performed.
    35 *
    36 * For more details, see
    37 * G.Gamrath, A.Melchiori, T.Berthold, A.M.Gleixner, D.Salvagnin: Branching on Multi-aggregated Variables
    38 * (http://dx.doi.org/10.1007/978-3-319-18008-3_10)
    39 */
    40
    41/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
    42
    43#ifndef __SCIP_BRANCH_MULTAGGR_H__
    44#define __SCIP_BRANCH_MULTAGGR_H__
    45
    46
    47#include "scip/def.h"
    48#include "scip/type_retcode.h"
    49#include "scip/type_scip.h"
    50
    51#ifdef __cplusplus
    52extern "C" {
    53#endif
    54
    55/** creates the multi-aggregated branching rule and includes it in SCIP
    56 *
    57 * @ingroup BranchingRuleIncludes
    58 */
    59SCIP_EXPORT
    61 SCIP* scip /**< SCIP data structure */
    62 );
    63
    64#ifdef __cplusplus
    65}
    66#endif
    67
    68#endif
    common defines and data types used in all packages of SCIP
    SCIP_RETCODE SCIPincludeBranchruleMultAggr(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