struct_gcgcol.h

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*                                                                           */
/*                  This file is part of the program                         */
/*          GCG --- Generic Column Generation                                */
/*                  a Dantzig-Wolfe decomposition based extension            */
/*                  of the branch-cut-and-price framework                    */
/*         SCIP --- Solving Constraint Integer Programs                      */
/*                                                                           */
/* Copyright (C) 2010-2021 Operations Research, RWTH Aachen University       */
/*                         Zuse Institute Berlin (ZIB)                       */
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/* This program is free software; you can redistribute it and/or             */
/* modify it under the terms of the GNU Lesser General Public License        */
/* as published by the Free Software Foundation; either version 3            */
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/* GNU Lesser General Public License for more details.                       */
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/**@file   struct_gcgcol.h
 * @ingroup DATASTRUCTURES
 * @brief  data structure to store columns (solutions from a pricing problem)
 * @author Jonas Witt
 */
 
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
 
#ifndef GCG_STRUCT_GCGCOL_H_
#define GCG_STRUCT_GCGCOL_H_
 
#include "scip/def.h"
#include "scip/type_misc.h"
#include "scip/scip.h"
 
#include "type_gcgcol.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
/** Column data structure */
struct GCG_Col
{
   SCIP*                pricingprob;        /**< SCIP data structure (pricing problem)*/
   int                  probnr;             /**< number of corresponding pricing problem */
   SCIP_VAR**           vars;               /**< (sorted) array of variables of corresponding pricing problem */
   SCIP_Real*           vals;               /**< array of solution values (belonging to vars) */
   int                  nvars;              /**< number of variables */
   int                  maxvars;            /**< capacity of vars */
   SCIP_Bool            isray;              /**< is the column a ray? */
   SCIP_Real            redcost;            /**< last known reduced cost */
   int                  age;                /**< age of column (number of iterations since it was created;
                                                 each time reduced cost are calculated counts as an interation) */
   int                  pos;                /**< position in column pool (or -1) */
   SCIP_Real*           mastercoefs;        /**< array of master coefficients */
   int                  nmastercoefs;       /**< number of master coefficients */
   int                  maxmastercoefs;     /**< capacity of mastercoefs */
   SCIP_Real*           mastercuts;         /**< array of master cut coefficients */
   int                  nmastercuts;        /**< number of master cut coefficients */
   int                  maxmastercuts;      /**< capacity of mastercuts */
   SCIP_Real            norm;               /**< norm of the coefficients in the master */
   int*                 linkvars;           /**< array of indices of variables in var-array which are linking variables */
   int                  nlinkvars;          /**< number of variables in var-array which are linking variables */
   int                  maxlinkvars;        /**< capacity of linkvars */
   SCIP_Bool            initcoefs;          /**< returns if mastercoefs and linkvars have been computed */
};
 
#ifdef __cplusplus
}
#endif
 
#endif /* STRUCT_GCGCOL_H_ */