scip_validation.h

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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*                                                                           */
/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
/*                                                                           */
/*    Copyright (C) 2002-2018 Konrad-Zuse-Zentrum                            */
/*                            fuer Informationstechnik Berlin                */
/*                                                                           */
/*  SCIP is distributed under the terms of the ZIB Academic License.         */
/*                                                                           */
/*  You should have received a copy of the ZIB Academic License              */
/*  along with SCIP; see the file COPYING. If not visit scip.zib.de.         */
/*                                                                           */
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

/**@file   scip_validation.h
 * @ingroup PUBLICCOREAPI
 * @brief  public methods for validation
 * @author Tobias Achterberg
 * @author Timo Berthold
 * @author Thorsten Koch
 * @author Alexander Martin
 * @author Marc Pfetsch
 * @author Kati Wolter
 * @author Gregor Hendel
 * @author Robert Lion Gottwald
 */

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

#ifndef __SCIP_SCIP_VALIDATION_H__
#define __SCIP_SCIP_VALIDATION_H__


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

/* In debug mode, we include the SCIP's structure in scip.c, such that no one can access
 * this structure except the interface methods in scip.c.
 * In optimized mode, the structure is included in scip.h, because some of the methods
 * are implemented as defines for performance reasons (e.g. the numerical comparisons).
 * Additionally, the internal "set.h" is included, such that the defines in set.h are
 * available in optimized mode.
 */
#ifdef NDEBUG
#include "scip/struct_scip.h"
#include "scip/struct_stat.h"
#include "scip/set.h"
#include "scip/tree.h"
#include "scip/misc.h"
#include "scip/var.h"
#include "scip/cons.h"
#include "scip/solve.h"
#include "scip/debug.h"
#endif

#ifdef __cplusplus
extern "C" {
#endif

/**@addtogroup PublicValidationMethods
 *
 * @{
 */

/** validate the result of the solve
 *
 *  the validation includes
 *
 *  - checking the feasibility of the incumbent solution in the original problem (using SCIPcheckSolOrig())
 *
 *  - checking if the objective bounds computed by SCIP agree with external primal and dual reference bounds.
 *
 *  All external reference bounds the original problem space and the original objective sense.
 *
 *  For infeasible problems, +/-SCIPinfinity() should be passed as reference bounds depending on the objective sense
 *  of the original problem.
 */
extern
SCIP_RETCODE SCIPvalidateSolve(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_Real             primalreference,    /**< external primal reference value for the problem, or SCIP_UNKNOWN */
   SCIP_Real             dualreference,      /**< external dual reference value for the problem, or SCIP_UNKNOWN */
   SCIP_Real             reftol,             /**< relative tolerance for acceptable violation of reference values */
   SCIP_Bool             quiet,              /**< TRUE if no status line should be printed */
   SCIP_Bool*            feasible,           /**< pointer to store if the best solution is feasible in the original problem,
                                               *  or NULL */
   SCIP_Bool*            primalboundcheck,   /**< pointer to store if the primal bound respects the given dual reference
                                               *  value, or NULL */
   SCIP_Bool*            dualboundcheck      /**< pointer to store if the dual bound respects the given primal reference
                                               *  value, or NULL */
   );

/**@} */

#ifdef __cplusplus
}
#endif

#endif