1 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 2 /* */ 3 /* This file is part of the program and library */ 4 /* SCIP --- Solving Constraint Integer Programs */ 5 /* */ 6 /* Copyright (c) 2002-2023 Zuse Institute Berlin (ZIB) */ 7 /* */ 8 /* Licensed under the Apache License, Version 2.0 (the "License"); */ 9 /* you may not use this file except in compliance with the License. */ 10 /* You may obtain a copy of the License at */ 11 /* */ 12 /* http://www.apache.org/licenses/LICENSE-2.0 */ 13 /* */ 14 /* Unless required by applicable law or agreed to in writing, software */ 15 /* distributed under the License is distributed on an "AS IS" BASIS, */ 16 /* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. */ 17 /* See the License for the specific language governing permissions and */ 18 /* limitations under the License. */ 19 /* */ 20 /* You should have received a copy of the Apache-2.0 license */ 21 /* along with SCIP; see the file LICENSE. If not visit scipopt.org. */ 22 /* */ 23 /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */ 24 25 /**@file bitencode.h 26 * @brief packing single and dual bit values 27 * @author Thorsten Koch 28 * @author Tobias Achterberg 29 */ 30 31 /*---+----1----+----2----+----3----+----4----+----5----+----6----+----7----+----8----+----9----+----0----+----1----+----2*/ 32 33 #ifndef __SCIP_BITENCODE_H__ 34 #define __SCIP_BITENCODE_H__ 35 36 #ifdef __cplusplus 37 extern "C" { 38 #endif 39 40 typedef unsigned int SCIP_SINGLEPACKET; /**< storing single bits in packed format */ 41 #define SCIP_SINGLEPACKETSIZE (sizeof(SCIP_SINGLEPACKET)*8) /**< each entry needs one bit of information */ 42 typedef unsigned int SCIP_DUALPACKET; /**< storing bit pairs in packed format */ 43 #define SCIP_DUALPACKETSIZE (sizeof(SCIP_DUALPACKET)*4) /**< each entry needs two bits of information */ 44 45 46 /** encode a single bit vector into packed format */ 47 void SCIPencodeSingleBit( 48 const int* inp, /**< unpacked input vector */ 49 SCIP_SINGLEPACKET* out, /**< buffer to store the packed vector */ 50 int count /**< number of elements */ 51 ); 52 53 /** decode a packed single bit vector into unpacked format */ 54 void SCIPdecodeSingleBit( 55 const SCIP_SINGLEPACKET* inp, /**< packed input vector */ 56 int* out, /**< buffer to store unpacked vector */ 57 int count /**< number of elements */ 58 ); 59 60 /** encode a dual bit vector into packed format */ 61 void SCIPencodeDualBit( 62 const int* inp, /**< unpacked input vector */ 63 SCIP_DUALPACKET* out, /**< buffer to store the packed vector */ 64 int count /**< number of elements */ 65 ); 66 67 /** decode a packed dual bit vector into unpacked format */ 68 void SCIPdecodeDualBit( 69 const SCIP_DUALPACKET* inp, /**< packed input vector */ 70 int* out, /**< buffer to store unpacked vector */ 71 int count /**< number of elements */ 72 ); 73 74 #ifdef __cplusplus 75 } 76 #endif 77 78 #endif 79