1 #ifndef GIM_BITSET_H_INCLUDED 2 #define GIM_BITSET_H_INCLUDED 3 /*! \file gim_bitset.h 4 \author Francisco Leon Najera 5 */ 6 /* 7 ----------------------------------------------------------------------------- 8 This source file is part of GIMPACT Library. 9 10 For the latest info, see http://gimpact.sourceforge.net/ 11 12 Copyright (c) 2006 Francisco Leon Najera. C.C. 80087371. 13 email: projectileman (at) yahoo.com 14 15 This library is free software; you can redistribute it and/or 16 modify it under the terms of EITHER: 17 (1) The GNU Lesser General Public License as published by the Free 18 Software Foundation; either version 2.1 of the License, or (at 19 your option) any later version. The text of the GNU Lesser 20 General Public License is included with this library in the 21 file GIMPACT-LICENSE-LGPL.TXT. 22 (2) The BSD-style license that is included with this library in 23 the file GIMPACT-LICENSE-BSD.TXT. 24 (3) The zlib/libpng license that is included with this library in 25 the file GIMPACT-LICENSE-ZLIB.TXT. 26 27 This library is distributed in the hope that it will be useful, 28 but WITHOUT ANY WARRANTY; without even the implied warranty of 29 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the files 30 GIMPACT-LICENSE-LGPL.TXT, GIMPACT-LICENSE-ZLIB.TXT and GIMPACT-LICENSE-BSD.TXT for more details. 31 32 ----------------------------------------------------------------------------- 33 */ 34 35 #include "gim_array.h" 36 37 38 #define GUINT_BIT_COUNT 32 39 #define GUINT_EXPONENT 5 40 41 class gim_bitset 42 { 43 public: 44 gim_array<GUINT> m_container; 45 46 gim_bitset() 47 { 48 49 } 50 51 gim_bitset(GUINT bits_count) 52 { 53 resize(bits_count); 54 } 55 56 ~gim_bitset() 57 { 58 } 59 60 inline bool resize(GUINT newsize) 61 { 62 GUINT oldsize = m_container.size(); 63 m_container.resize(newsize/GUINT_BIT_COUNT + 1,false); 64 while(oldsize<m_container.size()) 65 { 66 m_container[oldsize] = 0; 67 } 68 return true; 69 } 70 71 inline GUINT size() 72 { 73 return m_container.size()*GUINT_BIT_COUNT; 74 } 75 76 inline void set_all() 77 { 78 for(GUINT i = 0;i<m_container.size();++i) 79 { 80 m_container[i] = 0xffffffff; 81 } 82 } 83 84 inline void clear_all() 85 { 86 for(GUINT i = 0;i<m_container.size();++i) 87 { 88 m_container[i] = 0; 89 } 90 } 91 92 inline void set(GUINT bit_index) 93 { 94 if(bit_index>=size()) 95 { 96 resize(bit_index); 97 } 98 m_container[bit_index >> GUINT_EXPONENT] |= (1 << (bit_index & (GUINT_BIT_COUNT-1))); 99 } 100 101 ///Return 0 or 1 102 inline char get(GUINT bit_index) 103 { 104 if(bit_index>=size()) 105 { 106 return 0; 107 } 108 char value = m_container[bit_index >> GUINT_EXPONENT] & 109 (1 << (bit_index & (GUINT_BIT_COUNT-1))); 110 return value; 111 } 112 113 inline void clear(GUINT bit_index) 114 { 115 m_container[bit_index >> GUINT_EXPONENT] &= ~(1 << (bit_index & (GUINT_BIT_COUNT-1))); 116 } 117 }; 118 119 120 121 122 123 #endif // GIM_CONTAINERS_H_INCLUDED 124
