Scippy

    SCIP

    Solving Constraint Integer Programs

    presol_trivial.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 presol_trivial.h
    26 * @ingroup PRESOLVERS
    27 * @brief trivial presolver: round fractional bounds on integer variables, fix variables with equal bounds
    28 * @author Tobias Achterberg
    29 *
    30 * This presolver fixes variables with equal bounds to this value. Furthermore, all integral variables, for which the
    31 * bounds are fractional, will get rounded new bounds.
    32 */
    33
    34/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
    35
    36#ifndef __SCIP_PRESOL_TRIVIAL_H__
    37#define __SCIP_PRESOL_TRIVIAL_H__
    38
    39#include "scip/def.h"
    40#include "scip/type_retcode.h"
    41#include "scip/type_scip.h"
    42
    43#ifdef __cplusplus
    44extern "C" {
    45#endif
    46
    47/** creates the trivial presolver and includes it in SCIP
    48 *
    49 * @ingroup PresolverIncludes
    50 */
    51SCIP_EXPORT
    53 SCIP* scip /**< SCIP data structure */
    54 );
    55
    56#ifdef __cplusplus
    57}
    58#endif
    59
    60#endif
    common defines and data types used in all packages of SCIP
    SCIP_RETCODE SCIPincludePresolTrivial(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