Blender  V3.3
gim_bitset.h
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1 #ifndef GIM_BITSET_H_INCLUDED
2 #define GIM_BITSET_H_INCLUDED
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@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 #define GUINT_BIT_COUNT 32
38 #define GUINT_EXPONENT 5
39 
41 {
42 public:
44 
46  {
47  }
48 
49  gim_bitset(GUINT bits_count)
50  {
51  resize(bits_count);
52  }
53 
55  {
56  }
57 
58  inline bool resize(GUINT newsize)
59  {
60  GUINT oldsize = m_container.size();
61  m_container.resize(newsize / GUINT_BIT_COUNT + 1, false);
62  while (oldsize < m_container.size())
63  {
64  m_container[oldsize] = 0;
65  }
66  return true;
67  }
68 
69  inline GUINT size()
70  {
71  return m_container.size() * GUINT_BIT_COUNT;
72  }
73 
74  inline void set_all()
75  {
76  for (GUINT i = 0; i < m_container.size(); ++i)
77  {
78  m_container[i] = 0xffffffff;
79  }
80  }
81 
82  inline void clear_all()
83  {
84  for (GUINT i = 0; i < m_container.size(); ++i)
85  {
86  m_container[i] = 0;
87  }
88  }
89 
90  inline void set(GUINT bit_index)
91  {
92  if (bit_index >= size())
93  {
94  resize(bit_index);
95  }
96  m_container[bit_index >> GUINT_EXPONENT] |= (1 << (bit_index & (GUINT_BIT_COUNT - 1)));
97  }
98 
100  inline char get(GUINT bit_index)
101  {
102  if (bit_index >= size())
103  {
104  return 0;
105  }
106  char value = m_container[bit_index >> GUINT_EXPONENT] &
107  (1 << (bit_index & (GUINT_BIT_COUNT - 1)));
108  return value;
109  }
110 
111  inline void clear(GUINT bit_index)
112  {
113  m_container[bit_index >> GUINT_EXPONENT] &= ~(1 << (bit_index & (GUINT_BIT_COUNT - 1)));
114  }
115 };
116 
117 #endif // GIM_CONTAINERS_H_INCLUDED
GUINT size() const
Definition: gim_array.h:143
void resize(GUINT size, bool call_constructor=true, const T &fillData=T())
Definition: gim_array.h:287
bool resize(GUINT newsize)
Definition: gim_bitset.h:58
void clear(GUINT bit_index)
Definition: gim_bitset.h:111
char get(GUINT bit_index)
Return 0 or 1.
Definition: gim_bitset.h:100
void set(GUINT bit_index)
Definition: gim_bitset.h:90
void set_all()
Definition: gim_bitset.h:74
void clear_all()
Definition: gim_bitset.h:82
GUINT size()
Definition: gim_bitset.h:69
gim_array< GUINT > m_container
Definition: gim_bitset.h:43
gim_bitset(GUINT bits_count)
Definition: gim_bitset.h:49
#define GUINT_BIT_COUNT
Definition: gim_bitset.h:37
#define GUINT_EXPONENT
Definition: gim_bitset.h:38
#define GUINT
Definition: gim_math.h:40