Scippy

    SCIP

    Solving Constraint Integer Programs

    struct_sepastore.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 struct_sepastore.h
    26 * @ingroup INTERNALAPI
    27 * @brief datastructures for storing separated cuts
    28 * @author Tobias Achterberg
    29 * @author Leona Gottwald
    30 */
    31
    32/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
    33
    34#ifndef __SCIP_STRUCT_SEPASTORE_H__
    35#define __SCIP_STRUCT_SEPASTORE_H__
    36
    37
    38#include "scip/def.h"
    39#include "scip/type_lp.h"
    40#include "scip/type_var.h"
    41#include "scip/type_sepastore.h"
    42
    43#ifdef __cplusplus
    44extern "C" {
    45#endif
    46
    47/** storage for separated cuts */
    49{
    50 SCIP_ROW** cuts; /**< array with separated cuts sorted by score */
    51 SCIP_RANDNUMGEN* randnumgen; /**< random number generator used for tie breaking */
    52 int cutssize; /**< size of cuts and score arrays */
    53 int ncuts; /**< number of separated cuts (max. is set->sepa_maxcuts) */
    54 int nforcedcuts; /**< number of forced separated cuts (first positions in cuts array) */
    55 int ncutsadded; /**< total number of cuts added so far */
    56 int ncutsaddedviapool; /**< total number of cuts added from cutpool */
    57 int ncutsaddeddirect; /**< total number of cuts added directly */
    58 int ncutsfoundround; /**< number of cuts found so far in this separation round */
    59 int ncutsapplied; /**< total number of cuts applied to the LP */
    60 SCIP_Bool initiallp; /**< is the separation storage currently being filled with the initial LP rows? */
    61 SCIP_Bool forcecuts; /**< should the cuts be used despite the number of cuts parameter limit? */
    62};
    63
    65{
    66 SCIP_ROWEXACT** cuts; /**< array with separated cuts sorted by score */
    67 int cutssize; /**< size of cuts and score arrays */
    68 int ncuts; /**< number of separated cuts (max. is set->sepa_maxcuts) */
    69 int ncutsfound; /**< number of cuts found so far */
    70 int ncutsfoundround; /**< number of cuts found so far in this separation round */
    71 int ncutsapplied; /**< total number of cuts applied to the LP */
    72 SCIP_Bool initiallp; /**< is the separation storage currently being filled with the initial LP rows? */
    73};
    74
    75#ifdef __cplusplus
    76}
    77#endif
    78
    79#endif
    common defines and data types used in all packages of SCIP
    #define SCIP_Bool
    Definition: def.h:91
    SCIP_ROWEXACT ** cuts
    SCIP_Bool initiallp
    SCIP_Bool forcecuts
    SCIP_RANDNUMGEN * randnumgen
    SCIP_ROW ** cuts
    type definitions for LP management
    type definitions for storing separated cuts
    type definitions for problem variables