expr_abs.h

Go to the documentation of this file.

/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/*                                                                           */
/*                  This file is part of the program and library             */
/*         SCIP --- Solving Constraint Integer Programs                      */
/*                                                                           */
/*  Copyright (c) 2002-2025 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   expr_abs.h
 * @ingroup EXPRHDLRS
 * @brief  absolute expression handler
 * @author Stefan Vigerske
 * @author Benjamin Mueller
 */
 
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
 
#ifndef __SCIP_EXPR_ABS_H__
#define __SCIP_EXPR_ABS_H__
 
 
#include "scip/scip.h"
#include "scip/type_expr.h"
 
#ifdef __cplusplus
extern "C" {
#endif
 
/**@addtogroup EXPRHDLRS
 *
 * @{
 *
 * @name Absolute value expression
 *
 * This expression handler provides the absolute-value function, that is,
 * \f[
 *   x \mapsto |x|.
 * \f]
 *
 * @{
 */
 
/** creates an absolute value expression */
SCIP_EXPORT
SCIP_RETCODE SCIPcreateExprAbs(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_EXPR**           expr,               /**< pointer where to store expression */
   SCIP_EXPR*            child,              /**< single child */
   SCIP_DECL_EXPR_OWNERCREATE((*ownercreate)), /**< function to call to create ownerdata */
   void*                 ownercreatedata     /**< data to pass to ownercreate */
   );
 
/** indicates whether expression is of abs-type */
SCIP_EXPORT
SCIP_Bool SCIPisExprAbs(
   SCIP*                 scip,               /**< SCIP data structure */
   SCIP_EXPR*            expr                /**< expression */
   );
 
/** @}
  * @}
  */
 
/** creates the handler for absolute expression and includes it into SCIP
 *
 * @ingroup ExprhdlrIncludes
 */
SCIP_EXPORT
SCIP_RETCODE SCIPincludeExprhdlrAbs(
   SCIP*                 scip                /**< SCIP data structure */
   );
 
#ifdef __cplusplus
}
#endif
 
#endif /* __SCIP_EXPR_ABS_H__ */