cons_benderslp.h

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*                                                                           */
/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
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/*    Copyright (C) 2002-2020 Konrad-Zuse-Zentrum                            */
/*                            fuer Informationstechnik Berlin                */
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/*  SCIP is distributed under the terms of the ZIB Academic License.         */
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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**@file   cons_benderslp.h
 * @ingroup CONSHDLRS
 * @brief  constraint handler for benderslp decomposition
 * @author Stephen J. Maher
 */

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

#ifndef __SCIP_CONS_BENDERSLP_H__
#define __SCIP_CONS_BENDERSLP_H__


#include "scip/def.h"
#include "scip/type_retcode.h"
#include "scip/type_scip.h"

#ifdef __cplusplus
extern "C" {
#endif

/** creates the handler for benderslp constraints and includes it in SCIP
 *
 * @ingroup ConshdlrIncludes
 * */
SCIP_EXPORT
SCIP_RETCODE SCIPincludeConshdlrBenderslp(
   SCIP*                 scip                /**< SCIP data structure */
   );

/**@addtogroup CONSHDLRS
 *
 * @{
 *
 * @name Benders Constraints
 *
 * Two constraint handlers are implemented for the generation of Benders' decomposition cuts. When included in a
 * problem, the Benders' decomposition constraint handlers generate cuts during the enforcement of LP and relaxation
 * solutions. Additionally, Benders' decomposition cuts can be generated when checking the feasibility of solutions with
 * respect to the subproblem constraints.
 *
 * This constraint handler has an enforcement priority that is greater than the integer constraint handler. This means
 * that all LP solutions will be first checked for feasibility with respect to the Benders' decomposition second stage
 * constraints before performing an integrality check. This is part of a multi-phase approach for solving mixed integer
 * programs by Benders' decomposition.
 *
 * A parameter is available to control the depth at which the non-integer LP solution are enforced by solving the
 * Benders' decomposition subproblems. This parameter is set to 0 by default, indicating that non-integer LP solutions
 * are enforced only at the root node.
 *
 * @{
 */

/** @} */

/** @} */

#ifdef __cplusplus
}
#endif

#endif