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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 expr_erf.h
* @brief handler for Gaussian error function expressions
* @author Benjamin Mueller
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_EXPR_ERF_H__
#define __SCIP_EXPR_ERF_H__
#include "scip/scip.h"
#ifdef __cplusplus
extern "C" {
#endif
/** @{
*
* @name Gaussian error function expression
*
* This expression handler provides the Gaussian error function, that is
*
* \f[
* x \mapsto \frac{2}{\sqrt{\pi}}\int_0^x \exp(-t^2) dt.
* \f]
*
* @attention The implementation of this expression handler is incomplete.
* It is not usable for most use cases so far.
* @{
*/
/** creates an erf expression
*
* @attention The implementation of `erf` expressions is incomplete.
* They are not usable for most use cases so far.
*/
SCIP_EXPORT
SCIP_RETCODE SCIPcreateExprErf(
SCIP* scip, /**< SCIP data structure */
SCIP_EXPR** expr, /**< pointer where to store expression */
SCIP_EXPR* child, /**< child expression */
SCIP_DECL_EXPR_OWNERCREATE((*ownercreate)), /**< function to call to create ownerdata */
void* ownercreatedata /**< data to pass to ownercreate */
);
/** indicates whether expression is of erf-type */
SCIP_EXPORT
SCIP_Bool SCIPisExprErf(
SCIP* scip, /**< SCIP data structure */
SCIP_EXPR* expr /**< expression */
);
/** @}
* @}
*/
/** creates the handler for erf expressions and includes it into SCIP
*
* @attention The implementation of this expression handler is incomplete.
* It is not usable for most use cases so far.
*/
SCIP_EXPORT
SCIP_RETCODE SCIPincludeExprhdlrErf(
SCIP* scip /**< SCIP data structure */
);
#ifdef __cplusplus
}
#endif
#endif /* __SCIP_EXPR_ERF_H__ */