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/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */
/* */
/* This file is part of the program and library */
/* SCIP --- Solving Constraint Integer Programs */
/* */
/* Copyright 2002-2022 Zuse Institute Berlin */
/* */
/* 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 nlhdlr_convex.h
* @ingroup NLHDLRS
* @brief nonlinear handlers for convex and concave expressions, respectively
* @author Benjamin Mueller
* @author Stefan Vigerske
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_NLHDLR_CONVEX_H__
#define __SCIP_NLHDLR_CONVEX_H__
#include "scip/scip.h"
#ifdef __cplusplus
extern "C" {
#endif
/** includes convex nonlinear handler in nonlinear constraint handler
*
* @ingroup NlhdlrIncludes
*/
SCIP_EXPORT
SCIP_RETCODE SCIPincludeNlhdlrConvex(
SCIP* scip /**< SCIP data structure */
);
/** includes concave nonlinear handler in nonlinear constraint handler
*
* @ingroup NlhdlrIncludes
*/
SCIP_EXPORT
SCIP_RETCODE SCIPincludeNlhdlrConcave(
SCIP* scip /**< SCIP data structure */
);
/**@addtogroup NLHDLRS
* @{
*
* @name Convex and concave nonlinear handlers
*
* These nonlinear handler detect convex and concave subexpressions and provide specialized estimation functionality.
*
* @{
*/
/** checks whether a given expression is convex or concave w.r.t. the original variables
*
* This function uses the methods that are used in the detection algorithm of the convex nonlinear handler.
*/
SCIP_EXPORT
SCIP_RETCODE SCIPhasExprCurvature(
SCIP* scip, /**< SCIP data structure */
SCIP_EXPR* expr, /**< expression */
SCIP_EXPRCURV curv, /**< curvature to check for */
SCIP_Bool* success, /**< buffer to store whether expression has curvature curv (w.r.t. original variables) */
SCIP_HASHMAP* assumevarfixed /**< hashmap containing variables that should be assumed to be fixed, or NULL */
);
/** @}
* @}
*/
#ifdef __cplusplus
}
#endif
#endif /* __SCIP_NLHDLR_CONVEX_H__ */