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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 bitencode.h
* @brief packing single and dual bit values
* @author Thorsten Koch
* @author Tobias Achterberg
*/
/*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/
#ifndef __SCIP_BITENCODE_H__
#define __SCIP_BITENCODE_H__
#ifdef __cplusplus
extern "C" {
#endif
typedef unsigned int SCIP_SINGLEPACKET; /**< storing single bits in packed format */
#define SCIP_SINGLEPACKETSIZE (sizeof(SCIP_SINGLEPACKET)*8) /**< each entry needs one bit of information */
typedef unsigned int SCIP_DUALPACKET; /**< storing bit pairs in packed format */
#define SCIP_DUALPACKETSIZE (sizeof(SCIP_DUALPACKET)*4) /**< each entry needs two bits of information */
/** encode a single bit vector into packed format */
void SCIPencodeSingleBit(
const int* inp, /**< unpacked input vector */
SCIP_SINGLEPACKET* out, /**< buffer to store the packed vector */
int count /**< number of elements */
);
/** decode a packed single bit vector into unpacked format */
void SCIPdecodeSingleBit(
const SCIP_SINGLEPACKET* inp, /**< packed input vector */
int* out, /**< buffer to store unpacked vector */
int count /**< number of elements */
);
/** encode a dual bit vector into packed format */
void SCIPencodeDualBit(
const int* inp, /**< unpacked input vector */
SCIP_DUALPACKET* out, /**< buffer to store the packed vector */
int count /**< number of elements */
);
/** decode a packed dual bit vector into unpacked format */
void SCIPdecodeDualBit(
const SCIP_DUALPACKET* inp, /**< packed input vector */
int* out, /**< buffer to store unpacked vector */
int count /**< number of elements */
);
#ifdef __cplusplus
}
#endif
#endif