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<li class="navelem"><a class="el" href="dir_6f9635d4fbfa321d4c00f29df5cd540c.html">samples</a></li><li class="navelem"><a class="el" href="dir_9763c49130d28c477d56b1818b87d2bb.html">bvsample10</a></li> </ul>
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<a href="sample10_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 sample10.cpp</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"> Example of how to get random subset of a bit-vector</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment"> </span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> \sa bm::random_subset </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"></span> </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">/*! \file sample10.cpp</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment"> \brief Example: bvector<> generation of random sub-set</span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  </div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <iostream></span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include "<a class="code" href="bm_8h.html">bm.h</a>"</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="bmrandom_8h.html">bmrandom.h</a>"</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="keyword">using namespace </span>std;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  </div>
<div class="line"><a name="l00036"></a><span class="lineno"><a class="line" href="sample10_8cpp.html#a15ab1ec24c164cc91abcefb45a316cec"> 36</a></span> <span class="keyword">template</span><<span class="keyword">class</span> T> <span class="keywordtype">void</span> <a class="code" href="sample10_8cpp.html#a15ab1ec24c164cc91abcefb45a316cec">PrintContainer</a>(T first, T last)</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="keywordflow">if</span> (first == last)</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  cout << <span class="stringliteral">"<EMPTY SET>"</span>;</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">for</span>(;first != last; ++first)</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  cout << *first << <span class="stringliteral">";"</span>;</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  cout << 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"> 46</span>  </div>
<div class="line"><a name="l00047"></a><span class="lineno"><a class="line" href="sample10_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe"> 47</a></span> <span class="keywordtype">int</span> <a class="code" href="sample10_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">main</a>(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> {</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  <span class="keywordflow">try</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  {</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> bv;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  <span class="comment">// -----------------------------------------------</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// set some bits</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  <a class="code" href="classbm_1_1bvector.html#a405dd9ed048c935c84a5086ec8ba3649">bm::bvector<>::size_type</a> i;</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">for</span> (i = 0; i < 30000; i+=10)</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  {</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  bv.<a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(i);</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>  </div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keywordflow">for</span> (i = 300000; i < 400000; i+=100)</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>  bv.<a class="code" href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">set</a>(i);</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>  </div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> bvsubset1;</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <a class="code" href="classbm_1_1bvector.html">bm::bvector<></a> bvsubset2;</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  </div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="comment">// random sampler instance can be shared between calls</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <a class="code" href="classbm_1_1random__subset.html">bm::random_subset<bm::bvector<></a> > rand_sampler;</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  rand_sampler.<a class="code" href="classbm_1_1random__subset.html#abdf1e716e124ff4d7ad8ccef1646c99e">sample</a>(bvsubset1, bv, 20);</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  rand_sampler.<a class="code" href="classbm_1_1random__subset.html#abdf1e716e124ff4d7ad8ccef1646c99e">sample</a>(bvsubset2, bv, 20);</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <a class="code" href="sample10_8cpp.html#a15ab1ec24c164cc91abcefb45a316cec">PrintContainer</a>(bvsubset1.<a class="code" href="classbm_1_1bvector.html#a86b939f3aed555dc073e8c26e9efea71">first</a>(), bvsubset1.<a class="code" href="classbm_1_1bvector.html#a937cd13482984f234a5d94cc638c22b5">end</a>());</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  cout << endl;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="sample10_8cpp.html#a15ab1ec24c164cc91abcefb45a316cec">PrintContainer</a>(bvsubset2.<a class="code" href="classbm_1_1bvector.html#a86b939f3aed555dc073e8c26e9efea71">first</a>(), bvsubset2.<a class="code" href="classbm_1_1bvector.html#a937cd13482984f234a5d94cc638c22b5">end</a>());</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  }</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">catch</span>(std::exception& ex)</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  {</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  std::cerr << ex.what() << std::endl;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">return</span> 1;</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  }</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">return</span> 0;</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> }</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  </div>
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<div class="ttc" id="abmrandom_8h_html"><div class="ttname"><a href="bmrandom_8h.html">bmrandom.h</a></div><div class="ttdoc">Generation of random subset.</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_1random__subset_html_abdf1e716e124ff4d7ad8ccef1646c99e"><div class="ttname"><a href="classbm_1_1random__subset.html#abdf1e716e124ff4d7ad8ccef1646c99e">bm::random_subset::sample</a></div><div class="ttdeci">void sample(BV &bv_out, const BV &bv_in, size_type sample_count)</div><div class="ttdoc">Get random subset of input vector.</div><div class="ttdef"><b>Definition:</b> <a href="bmrandom_8h_source.html#l00140">bmrandom.h:140</a></div></div>
<div class="ttc" id="aclassbm_1_1bvector_html_a52b4259a5cc4ebd8953832c696e24f02"><div class="ttname"><a href="classbm_1_1bvector.html#a52b4259a5cc4ebd8953832c696e24f02">bm::bvector::set</a></div><div class="ttdeci">bvector< Alloc > & set(size_type n, bool val=true)</div><div class="ttdoc">Sets bit n if val is true, clears bit n if val is false.</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l03581">bm.h:3581</a></div></div>
<div class="ttc" id="asample10_8cpp_html_a15ab1ec24c164cc91abcefb45a316cec"><div class="ttname"><a href="sample10_8cpp.html#a15ab1ec24c164cc91abcefb45a316cec">PrintContainer</a></div><div class="ttdeci">void PrintContainer(T first, T last)</div><div class="ttdef"><b>Definition:</b> <a href="sample10_8cpp_source.html#l00036">sample10.cpp:36</a></div></div>
<div class="ttc" id="asample10_8cpp_html_a840291bc02cba5474a4cb46a9b9566fe"><div class="ttname"><a href="sample10_8cpp.html#a840291bc02cba5474a4cb46a9b9566fe">main</a></div><div class="ttdeci">int main(void)</div><div class="ttdef"><b>Definition:</b> <a href="sample10_8cpp_source.html#l00047">sample10.cpp:47</a></div></div>
<div class="ttc" id="aclassbm_1_1random__subset_html"><div class="ttname"><a href="classbm_1_1random__subset.html">bm::random_subset</a></div><div class="ttdef"><b>Definition:</b> <a href="bmrandom_8h_source.html#l00056">bmrandom.h:56</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="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>
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