Scippy

    SCIP

    Solving Constraint Integer Programs

    prop_dualfix.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 prop_dualfix.h
    26 * @ingroup PROPAGATORS
    27 * @brief fixing roundable variables to best bound
    28 * @author Tobias Achterberg
    29 *
    30 * This propagator fixes variables, that have no restrictions in direction of their objective coefficient, to the best
    31 * possible value. If the objective coefficient of a variable is \f$0\f$ and it may be rounded both up and down, then
    32 * this variable will be fixed to the closest feasible value to \f$0\f$.
    33 */
    34
    35/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
    36
    37#ifndef __SCIP_PROP_DUALFIX_H__
    38#define __SCIP_PROP_DUALFIX_H__
    39
    40#include "scip/def.h"
    41#include "scip/type_retcode.h"
    42#include "scip/type_scip.h"
    43
    44#ifdef __cplusplus
    45extern "C" {
    46#endif
    47
    48/** creates the dual fixing propagator and includes it in SCIP
    49 *
    50 * @ingroup PropagatorIncludes
    51 */
    52SCIP_EXPORT
    54 SCIP* scip /**< SCIP data structure */
    55 );
    56
    57#ifdef __cplusplus
    58}
    59#endif
    60
    61#endif
    common defines and data types used in all packages of SCIP
    SCIP_RETCODE SCIPincludePropDualfix(SCIP *scip)
    Definition: prop_dualfix.c:335
    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