1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
|
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<meta name="generator" content="Doxygen 1.8.17"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>BitMagic-C++: sample5.cpp Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="dynsections.js"></script>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div, it is closed by doxygen! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">BitMagic-C++
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.8.17 -->
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',false,false,'search.php','Search');
});
/* @license-end */</script>
<div id="main-nav"></div>
<div id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_6f9635d4fbfa321d4c00f29df5cd540c.html">samples</a></li><li class="navelem"><a class="el" href="dir_61b353fdcbb1b17a9cd1a51dd45ec637.html">bvsample05</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">sample5.cpp</div> </div>
</div><!--header-->
<div class="contents">
<a href="sample5_8cpp.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">Copyright(c) 2002-2017 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"></span> </div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">Licensed under the Apache License, Version 2.0 (the "License");</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"></span> </div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment"></span> </div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment">distributed under the License is distributed on an "AS IS" BASIS,</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">limitations under the License.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"></span> </div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">For more information please visit: http://bitmagic.io</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="comment"></span> </div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">/** \example sample5.cpp</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> Example demonstrates using enumerators - the fastest way to retrieve </span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> indexes of 1 bits from the bitvector. This approach works faster than</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> get_first()/get_next() functions.</span></div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="comment"> </span></div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="comment"> \sa bm::bvector<>::enumerator </span></div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment"> \sa bm::bvector<>::first()</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> \sa bm::bvector<>::end()</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment"> \sa bm::bvector<>::get_enumerator()</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"></span> </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">/*! \file sample5.cpp</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment"> \brief Example: bvector<>::enumerator use</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include "<a class="code" href="bm_8h.html">bm.h</a>"</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  </div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  </div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">inline</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"><a class="line" href="sample5_8cpp.html#a1a9beb932506d3b6316514b927d50cb8"> 41</a></span> <span class="keywordtype">void</span> <a class="code" href="sample5_8cpp.html#a1a9beb932506d3b6316514b927d50cb8">Print</a>(<a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> n)</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> {</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  cout << n << endl;;</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  </div>
<div class="line"><a name="l00046"></a><span class="lineno"><a class="line" href="sample5_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe"> 46</a></span> <span class="keywordtype">int</span> <a class="code" href="sample5_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> {</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">try</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  {</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> bv;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  </div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  bv[10] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  bv[100] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  bv[10000] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  bv[65536] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  bv[65537] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  bv[65538] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  bv[65540] = <span class="keyword">true</span>;</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  </div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <a class="code" href="classbm_1_1bvector_1_1enumerator.html">bm::bvector<>::enumerator</a> en = bv.<a class="code" href="classbm_1_1bvector.html#a86b939f3aed555dc073e8c26e9efea71">first</a>();</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <a class="code" href="classbm_1_1bvector_1_1enumerator.html">bm::bvector<>::enumerator</a> en_end = bv.<a class="code" href="classbm_1_1bvector.html#a937cd13482984f234a5d94cc638c22b5">end</a>();</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  </div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">while</span> (en < en_end)</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  cout << *en << <span class="stringliteral">", "</span>;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  ++en; <span class="comment">// Fastest way to increment enumerator</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  }</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  cout << endl;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  </div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  en = bv.<a class="code" href="classbm_1_1bvector.html#a86b939f3aed555dc073e8c26e9efea71">first</a>();</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="comment">// This is not the fastest way to do the job, because for_each</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// often will try to calculate difference between iterators,</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// which is expensive for enumerators.</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="comment">// But it can be useful for some STL loyal applications.</span></div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  std::for_each(en, en_end, <a class="code" href="sample5_8cpp.html#a1a9beb932506d3b6316514b927d50cb8">Print</a>);</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  cout << endl;</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  </div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="comment">// example to illustrate random positioning of enumerator </span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="comment">// go to a random bit number, enumerator automatically finds the available bit</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  en.<a class="code" href="classbm_1_1bvector_1_1enumerator.html#a81901b1a7ac3bfed1e79573f8e7f51e7">go_to</a>(65537);</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">for</span> (; en.<a class="code" href="classbm_1_1bvector_1_1iterator__base.html#a3f6af7f5b46c0219b28916187d302c43">valid</a>(); ++en)</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  {</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  cout << *en << <span class="stringliteral">", "</span>;</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  }</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  cout << endl;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  }</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">catch</span>(std::exception& ex)</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  std::cerr << ex.what() << std::endl;</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> }</div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="asample5_8cpp_html_a1a9beb932506d3b6316514b927d50cb8"><div class="ttname"><a href="sample5_8cpp.html#a1a9beb932506d3b6316514b927d50cb8">Print</a></div><div class="ttdeci">void Print(bm::bvector<>::size_type n)</div><div class="ttdef"><b>Definition:</b> <a href="sample5_8cpp_source.html#l00041">sample5.cpp:41</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_1_1enumerator_html"><div class="ttname"><a href="classbm_1_1bvector_1_1enumerator.html">bm::bvector::enumerator</a></div><div class="ttdoc">Constant iterator designed to enumerate "ON" bits.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00599">bm.h:599</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_1_1enumerator_html_a81901b1a7ac3bfed1e79573f8e7f51e7"><div class="ttname"><a href="classbm_1_1bvector_1_1enumerator.html#a81901b1a7ac3bfed1e79573f8e7f51e7">bm::bvector::enumerator::go_to</a></div><div class="ttdeci">bool go_to(size_type pos) BMNOEXCEPT</div><div class="ttdoc">go to a specific position in the bit-vector (or next)</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l06870">bm.h:6870</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html"><div class="ttname"><a href="classbm_1_1bvector.html">bm::bvector<></a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_1_1iterator__base_html_a3f6af7f5b46c0219b28916187d302c43"><div class="ttname"><a href="classbm_1_1bvector_1_1iterator__base.html#a3f6af7f5b46c0219b28916187d302c43">bm::bvector::iterator_base::valid</a></div><div class="ttdeci">bool valid() const BMNOEXCEPT</div><div class="ttdoc">Checks if iterator is still valid. Analog of != 0 comparison for pointers.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00280">bm.h:280</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a937cd13482984f234a5d94cc638c22b5"><div class="ttname"><a href="classbm_1_1bvector.html#a937cd13482984f234a5d94cc638c22b5">bm::bvector::end</a></div><div class="ttdeci">enumerator end() const</div><div class="ttdoc">Returns enumerator pointing on the next bit after the last.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l01776">bm.h:1776</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a86b939f3aed555dc073e8c26e9efea71"><div class="ttname"><a href="classbm_1_1bvector.html#a86b939f3aed555dc073e8c26e9efea71">bm::bvector::first</a></div><div class="ttdeci">enumerator first() const</div><div class="ttdoc">Returns enumerator pointing on the first non-zero bit.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l01770">bm.h:1770</a></div></div>
<div class="ttc" id="asample5_8cpp_html_a840291bc02cba5474a4cb46a9b9566fe"><div class="ttname"><a href="sample5_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">main</a></div><div class="ttdeci">int main(void)</div><div class="ttdef"><b>Definition:</b> <a href="sample5_8cpp_source.html#l00046">sample5.cpp:46</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a405dd9ed048c935c84a5086ec8ba3649"><div class="ttname"><a href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector::size_type</a></div><div class="ttdeci">bm::id_t size_type</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00117">bm.h:117</a></div></div>
<div class="ttc" id="abm_8h_html"><div class="ttname"><a href="bm_8h.html">bm.h</a></div><div class="ttdoc">Compressed bit-vector bvector<> container, set algebraic methods, traversal iterators.</div></div>
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.8.17
</small></address>
</body>
</html>
|
