scip_validation.h

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/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
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/*  Copyright (c) 2002-2025 Zuse Institute Berlin (ZIB)                      */
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/**@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 Leona 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"
 
#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.
 */
SCIP_EXPORT
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 */
   );
 
/** validate the result of an exact 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, +/-inf should be passed as reference bounds depending on the objective sense
 *  of the original problem.
 */
SCIP_EXPORT
SCIP_RETCODE SCIPvalidateSolveExact(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_RATIONAL*        primalreference,    /**< external primal reference value for the problem, or SCIP_UNKNOWN */
   SCIP_RATIONAL*        dualreference,      /**< external dual reference value for the problem, or SCIP_UNKNOWN */
   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