struct_pricestore.h

Go to the documentation of this file.

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*                                                                           */
/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
/*                                                                           */
/*  Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB)                      */
/*                                                                           */
/*  Licensed under the Apache License, Version 2.0 (the "License");          */
/*  you may not use this file except in compliance with the License.         */
/*  You may obtain a copy of the License at                                  */
/*                                                                           */
/*      http://www.apache.org/licenses/LICENSE-2.0                           */
/*                                                                           */
/*  Unless required by applicable law or agreed to in writing, software      */
/*  distributed under the License is distributed on an "AS IS" BASIS,        */
/*  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */
/*  See the License for the specific language governing permissions and      */
/*  limitations under the License.                                           */
/*                                                                           */
/*  You should have received a copy of the Apache-2.0 license                */
/*  along with SCIP; see the file LICENSE. If not visit scipopt.org.         */
/*                                                                           */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**@file   struct_pricestore.h
 * @ingroup INTERNALAPI
 * @brief  data structures for storing priced variables
 * @author Tobias Achterberg
 */

/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/

#ifndef __SCIP_STRUCT_PRICESTORE_H__
#define __SCIP_STRUCT_PRICESTORE_H__


#include "scip/def.h"
#include "scip/type_clock.h"
#include "scip/type_var.h"
#include "scip/type_pricestore.h"

#ifdef __cplusplus
extern "C" {
#endif

/** storage for priced variables */
struct SCIP_Pricestore
{
   SCIP_CLOCK*           probpricingtime;    /**< time needed to price existing problem variables */
   SCIP_VAR**            vars;               /**< array with priced variables with violated reduced costs sorted by score */
   SCIP_Real*            scores;             /**< score for each priced variable (e.g. |redcost|/no. of nonzeros) */
   SCIP_VAR**            bdviolvars;         /**< variables where zero violates the bounds */
   SCIP_Real*            bdviolvarslb;       /**< lower bounds of bdviolvars */
   SCIP_Real*            bdviolvarsub;       /**< upper bounds of bdbiolvars */
   int                   varssize;           /**< size of vars and score arrays */
   int                   nvars;              /**< number of priced variables (max. is set->price_maxvars) */
   int                   bdviolvarssize;     /**< size of bdviolvars, bdviolvarslb, and bdviolvarsub arrays */
   int                   nbdviolvars;        /**< number of variables, where zero violates the bounds */
   int                   naddedbdviolvars;   /**< number of bound violated variables already added to the LP */
   int                   nprobpricings;      /**< total number of calls to problem variable pricing */
   int                   nprobvarsfound;     /**< total number of problem variables, that were added (and possibly thrown away) */
   int                   nvarsfound;         /**< total number of variables, that were added (and possibly thrown away) */
   int                   nvarsapplied;       /**< total number of variables, that were added to the LP */
   SCIP_Bool             initiallp;          /**< is the pricing storage currently being filled with the initial LP columns? */
};

#ifdef __cplusplus
}
#endif

#endif