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<a href="bmrandom_8h.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="preprocessor">#ifndef BMRANDOM__H__INCLUDED__</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="preprocessor">#define BMRANDOM__H__INCLUDED__</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">Copyright(c) 2002-2019 Anatoliy Kuznetsov(anatoliy_kuznetsov at yahoo.com)</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"></span> </div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment">Licensed under the Apache License, Version 2.0 (the "License");</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment">you may not use this file except in compliance with the License.</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment">You may obtain a copy of the License at</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"> http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="comment"></span> </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="comment">Unless required by applicable law or agreed to in writing, software</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment">distributed under the License is distributed on an "AS IS" BASIS,</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment">WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment">See the License for the specific language governing permissions and</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment">limitations under the License.</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">For more information please visit: http://bitmagic.io</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="comment">*/</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment"></span> </div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="comment">/*! \file bmrandom.h</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="comment"> \brief Generation of 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>  </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#ifndef BM__H__INCLUDED__</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// BitMagic utility headers do not include main "bm.h" declaration </span></div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="comment">// #include "bm.h" or "bm64.h" explicitly </span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor"># error missing include (bm.h or bm64.h)</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>  </div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  </div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include "<a class="code" href="bmfunc_8h.html">bmfunc.h</a>"</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include "<a class="code" href="bmdef_8h.html">bmdef.h</a>"</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include <stdlib.h></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include <random></span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="preprocessor">#include <algorithm></span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  </div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="keyword">namespace </span><a class="code" href="namespacebm.html">bm</a></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> {</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  </div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"></span> </div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">/*!</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> Class implements algorithm for random subset generation.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"></span> </div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> Implemented method tries to be fair, but doesn't guarantee</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> true randomeness or absense of bias.</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"></span> </div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> Performace note: </span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> Class holds temporary buffers and variables, so it is recommended to</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> re-use instances over multiple calls.</span></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"> \ingroup setalgo</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> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00056"></a><span class="lineno"><a class="line" href="classbm_1_1random__subset.html"> 56</a></span> <span class="keyword">class </span><a class="code" href="classbm_1_1random__subset.html">random_subset</a></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> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00059"></a><span class="lineno"><a class="line" href="classbm_1_1random__subset.html#a3e0b204d64051edfc8a8dec0426f553c"> 59</a></span>  <span class="keyword">typedef</span> BV <a class="code" href="classbm_1_1random__subset.html#a3e0b204d64051edfc8a8dec0426f553c">bvector_type</a>;</div>
<div class="line"><a name="l00060"></a><span class="lineno"><a class="line" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2"> 60</a></span>  <span class="keyword">typedef</span> <span class="keyword">typename</span> BV::size_type <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a>;</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">public</span>:</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <a class="code" href="classbm_1_1random__subset.html#ab47431e0fe23053d0dc5d3799822c109">random_subset</a>();</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <a class="code" href="classbm_1_1random__subset.html#a6cd4b5521110aad7f8c8511b88d11bff">~random_subset</a>();</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"></span> </div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> /// Get random subset of input vector</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> ///</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> /// @param bv_out - destination vector</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> /// @param bv_in - input vector</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> /// @param sample_count - number of bits to pick</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> <span class="comment"></span> <span class="keywordtype">void</span> <a class="code" href="classbm_1_1random__subset.html#abdf1e716e124ff4d7ad8ccef1646c99e">sample</a>(BV& bv_out, <span class="keyword">const</span> BV& bv_in, <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> sample_count);</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  </div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  </div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keyword">typedef</span> </div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keyword">typename</span> BV::blocks_manager_type blocks_manager_type;</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  </div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="keyword">private</span>:<span class="comment"></span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment"> /// simple picking algorithm for small number of items</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> /// in [first,last] range</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment"> ///</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"></span> <span class="keywordtype">void</span> simple_pick(BV& bv_out,</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keyword">const</span> BV& bv_in,</div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> sample_count,</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> first,</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> last);</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>  <span class="keywordtype">void</span> get_subset(BV& bv_out, </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keyword">const</span> BV& bv_in,</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> in_count,</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> sample_count);</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordtype">void</span> get_block_subset(<a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_out,</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keyword">const</span> <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_src,</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordtype">unsigned</span> count);</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keyword">static</span> </div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keywordtype">unsigned</span> process_word(<a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_out, </div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">const</span> <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_src,</div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  <span class="keywordtype">unsigned</span> nword,</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordtype">unsigned</span> take_count) <a class="code" href="bmdef_8h.html#a40d7d3c011d2128b1f0c392127d7d61e">BMNOEXCEPT</a>;</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  </div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">static</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordtype">void</span> get_random_array(<a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_out, </div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <a class="code" href="namespacebm.html#ac654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a>* <a class="code" href="group__bitfunc.html#gacc36542d24cdaf04dbb85abdfd0f4d05">bit_list</a>,</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordtype">unsigned</span> bit_list_size,</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordtype">unsigned</span> count);</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="keyword">static</span></div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordtype">unsigned</span> compute_take_count(<span class="keywordtype">unsigned</span> bc,</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> in_count, <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> sample_count) <a class="code" href="bmdef_8h.html#a40d7d3c011d2128b1f0c392127d7d61e">BMNOEXCEPT</a>;</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  </div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  <a class="code" href="classbm_1_1random__subset.html#ab47431e0fe23053d0dc5d3799822c109">random_subset</a>(<span class="keyword">const</span> <a class="code" href="classbm_1_1random__subset.html">random_subset</a>&);</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <a class="code" href="classbm_1_1random__subset.html">random_subset</a>& operator=(<span class="keyword">const</span> <a class="code" href="classbm_1_1random__subset.html">random_subset</a>&);</div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="keyword">private</span>:</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  <span class="keyword">typename</span> <a class="code" href="classbm_1_1bvector.html#ac9ed62250af37ade811aaf20b7a8d9a2">bvector_type::rs_index_type</a> rsi_; <span class="comment">///< RS index (block counts)</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"></span> <a class="code" href="classbm_1_1random__subset.html#a3e0b204d64051edfc8a8dec0426f553c">bvector_type</a> bv_nb_; <span class="comment">///< blocks vector</span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"></span> <a class="code" href="namespacebm.html#ac654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a> bit_list_[<a class="code" href="namespacebm.html#ad0b8714080144ac70197840ff96752b7">bm::gap_max_bits</a>];</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* sub_block_;</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> };</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"></span> </div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment">///////////////////////////////////////////////////////////////////</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"></span> </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  </div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00128"></a><span class="lineno"><a class="line" href="classbm_1_1random__subset.html#ab47431e0fe23053d0dc5d3799822c109"> 128</a></span> <a class="code" href="classbm_1_1random__subset.html#ab47431e0fe23053d0dc5d3799822c109">random_subset<BV>::random_subset</a>()</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> {</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  sub_block_ = <span class="keyword">new</span> <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>[<a class="code" href="namespacebm.html#a91319dbc0d0e1bf3a3efc4d92bac7972">bm::set_block_size</a>];</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span> }</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00134"></a><span class="lineno"><a class="line" href="classbm_1_1random__subset.html#a6cd4b5521110aad7f8c8511b88d11bff"> 134</a></span> <a class="code" href="classbm_1_1random__subset.html#a6cd4b5521110aad7f8c8511b88d11bff">random_subset<BV>::~random_subset</a>()</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> {</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">delete</span> [] sub_block_;</div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> }</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  </div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00140"></a><span class="lineno"><a class="line" href="classbm_1_1random__subset.html#abdf1e716e124ff4d7ad8ccef1646c99e"> 140</a></span> <span class="keywordtype">void</span> <a class="code" href="classbm_1_1random__subset.html#abdf1e716e124ff4d7ad8ccef1646c99e">random_subset<BV>::sample</a>(BV& bv_out, </div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">const</span> BV& bv_in, </div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> sample_count)</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> {</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keywordflow">if</span> (sample_count == 0)</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  {</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  bv_out.clear(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  }</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  rsi_.init();</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  bv_in.build_rs_index(&rsi_, &bv_nb_);</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  </div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> in_count = rsi_.count();</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  <span class="keywordflow">if</span> (in_count <= sample_count)</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  {</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  bv_out = bv_in;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  </div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordtype">float</span> pick_ratio = float(sample_count) / float(in_count);</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  <span class="keywordflow">if</span> (pick_ratio < 0.054f)</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  {</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> first, last;</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordtype">bool</span> b = bv_in.find_range(first, last);</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">if</span> (!b)</div>
<div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  </div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  simple_pick(bv_out, bv_in, sample_count, first, last);</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  </div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keywordflow">if</span> (sample_count > in_count/2)</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  {</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  <span class="comment">// build the complement vector and subtract it</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  BV tmp_bv;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <a class="code" href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">size_type</a> delta_count = in_count - sample_count;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  </div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  get_subset(tmp_bv, bv_in, in_count, delta_count);</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  bv_out = bv_in;</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  bv_out -= tmp_bv;</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  }</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  get_subset(bv_out, bv_in, in_count, sample_count);</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> }</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  </div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="keywordtype">void</span> <a class="code" href="classbm_1_1random__subset.html">random_subset<BV>::simple_pick</a>(BV& bv_out,</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">const</span> BV& bv_in,</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  size_type sample_count,</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  size_type first,</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  size_type last)</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  bv_out.clear(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  </div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  std::random_device rd;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span> <span class="preprocessor"> #ifdef BM64ADDR</span></div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  std::mt19937_64 mt_rand(rd());</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span> <span class="preprocessor"> #else</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  std::mt19937 mt_rand(rd());</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span> <span class="preprocessor"> #endif</span></div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  std::uniform_int_distribution<size_type> dist(first, last);</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  </div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="keywordflow">while</span> (sample_count)</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  {</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  size_type fidx;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  size_type ridx = dist(mt_rand); <span class="comment">// generate random position</span></div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  </div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(ridx >= first && ridx <= last);</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  </div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  <span class="keywordtype">bool</span> b = bv_in.find(ridx, fidx); <span class="comment">// find next valid bit after random</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(b);</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (b)</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  {</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  <span class="comment">// set true if was false</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordtype">bool</span> is_set = bv_out.set_bit_conditional(fidx, <span class="keyword">true</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  sample_count -= is_set;</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">while</span> (!is_set) <span class="comment">// find next valid (and not set) bit</span></div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  {</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  ++fidx;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="comment">// searching always left to right may create a bias...</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  b = bv_in.find(fidx, fidx);</div>
<div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">if</span> (!b)</div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">if</span> (fidx > last)</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  is_set = bv_out.set_bit_conditional(fidx, <span class="keyword">true</span>, <span class="keyword">false</span>);</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  sample_count -= is_set;</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  } <span class="comment">// while</span></div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  }</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  } <span class="comment">// while</span></div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span> }</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  </div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  </div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span> <span class="keywordtype">void</span> random_subset<BV>::get_subset(BV& bv_out,</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keyword">const</span> BV& bv_in,</div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  size_type in_count,</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  size_type sample_count)</div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> {</div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  bv_out.clear(<span class="keyword">true</span>);</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  bv_out.resize(bv_in.size());</div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  </div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  <span class="keyword">const</span> blocks_manager_type& bman_in = bv_in.get_blocks_manager();</div>
<div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  blocks_manager_type& bman_out = bv_out.get_blocks_manager();</div>
<div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* tmp_block = bman_out.check_allocate_tempblock();</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  </div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  size_type first_nb, last_nb;</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordtype">bool</span> b = bv_nb_.find_range(first_nb, last_nb);</div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(b);</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  <span class="keywordflow">if</span> (!b)</div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  </div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  std::random_device rd;</div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span> <span class="preprocessor"> #ifdef BM64ADDR</span></div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  std::mt19937_64 mt_rand(rd());</div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="preprocessor"> #else</span></div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  std::mt19937 mt_rand(rd());</div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="preprocessor"> #endif</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  std::uniform_int_distribution<size_type> dist_nb(first_nb, last_nb);</div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  </div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  size_type curr_sample_count = sample_count;</div>
<div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> take_count = 0; curr_sample_count; curr_sample_count -= take_count)</div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  {</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  <span class="comment">// pick block at random</span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  size_type nb;</div>
<div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  size_type ridx = dist_nb(mt_rand); <span class="comment">// generate random block idx</span></div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(ridx >= first_nb && ridx <= last_nb);</div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  </div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  b = bv_nb_.find(ridx, nb); <span class="comment">// find next valid nb</span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">if</span> (!b)</div>
<div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  {</div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  b = bv_nb_.find(first_nb, nb);</div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">if</span> (!b)</div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  {</div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  b = bv_nb_.find(first_nb, nb);</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(!bv_nb_.any());</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(b);</div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">return</span>; <span class="comment">// cannot find block</span></div>
<div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  }</div>
<div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  }</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  bv_nb_.clear_bit_no_check(nb); <span class="comment">// remove from blocks list</span></div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  </div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="comment">// calculate proportinal sample count</span></div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordtype">unsigned</span> bc = rsi_.count(nb);</div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(bc && (bc <= 65536));</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  take_count = compute_take_count(bc, in_count, sample_count);</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordflow">if</span> (take_count > curr_sample_count)</div>
<div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  take_count = unsigned(curr_sample_count);</div>
<div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(take_count);</div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  <span class="keywordflow">if</span> (!take_count)</div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  {</div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="keywordtype">unsigned</span> i0, j0;</div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <a class="code" href="namespacebm.html#ad2f0fe59a771c0f0478dbd52fcae04fe">bm::get_block_coord</a>(nb, i0, j0);</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  <span class="keyword">const</span> <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_src = bman_in.get_block(i0, j0);</div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(blk_src);</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  </div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  <span class="comment">// allocate target block</span></div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_out = bman_out.get_block_ptr(i0, j0);</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(!blk_out);</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">if</span> (blk_out)</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  {</div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  blk_out = bman_out.deoptimize_block(nb);</div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  }</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  {</div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  blk_out = bman_out.get_allocator().alloc_bit_block();</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  bman_out.set_block(nb, blk_out);</div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  }</div>
<div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  <span class="keywordflow">if</span> (take_count == bc) <span class="comment">// whole block take (strange)</span></div>
<div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  {</div>
<div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  <span class="comment">// copy the whole src block</span></div>
<div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  <span class="keywordflow">if</span> (<a class="code" href="bmdef_8h.html#a7bc243edc0a5e82979d6bf63f4debb9a">BM_IS_GAP</a>(blk_src))</div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  <a class="code" href="group__gapfunc.html#gab62a99c0c34e3e1683699658b1e1226f">bm::gap_convert_to_bitset</a>(blk_out, <a class="code" href="bmdef_8h.html#a6a7c8b8ee3f3b60ab907c1699acb7aa0">BMGAP_PTR</a>(blk_src));</div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <a class="code" href="group__bitfunc.html#ga17448d1f4d05fa51668f112a16c69cc0">bm::bit_block_copy</a>(blk_out, blk_src);</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  }</div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <a class="code" href="group__bitfunc.html#gab8357c5cff5e2dbf1b59208f6dd543b6">bm::bit_block_set</a>(blk_out, 0);</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">if</span> (bc < 4096) <span class="comment">// use array shuffle</span></div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  {</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  <span class="keywordtype">unsigned</span> arr_len;</div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="comment">// convert source block to bit-block</span></div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <span class="keywordflow">if</span> (<a class="code" href="bmdef_8h.html#a7bc243edc0a5e82979d6bf63f4debb9a">BM_IS_GAP</a>(blk_src))</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  {</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  arr_len = <a class="code" href="group__gapfunc.html#ga15c823d2d5fcf129b65039ab5573ed45">bm::gap_convert_to_arr</a>(bit_list_,</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <a class="code" href="bmdef_8h.html#a6a7c8b8ee3f3b60ab907c1699acb7aa0">BMGAP_PTR</a>(blk_src),</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  <a class="code" href="namespacebm.html#ad0b8714080144ac70197840ff96752b7">bm::gap_max_bits</a>);</div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  }</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  <span class="keywordflow">else</span> <span class="comment">// bit-block</span></div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  {</div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  arr_len = <a class="code" href="group__bitfunc.html#ga23c09fb611870fd798f7e13f2202adcf">bm::bit_convert_to_arr</a>(bit_list_,</div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  blk_src,</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <a class="code" href="namespacebm.html#ad0b8714080144ac70197840ff96752b7">bm::gap_max_bits</a>,</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="namespacebm.html#ad0b8714080144ac70197840ff96752b7">bm::gap_max_bits</a>,</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  0);</div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  }</div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(arr_len);</div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  get_random_array(blk_out, bit_list_, arr_len, take_count);</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  }</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  <span class="keywordflow">else</span> <span class="comment">// dense block</span></div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  {</div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="comment">// convert source block to bit-block</span></div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keywordflow">if</span> (<a class="code" href="bmdef_8h.html#a7bc243edc0a5e82979d6bf63f4debb9a">BM_IS_GAP</a>(blk_src))</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  {</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <a class="code" href="group__gapfunc.html#gab62a99c0c34e3e1683699658b1e1226f">bm::gap_convert_to_bitset</a>(tmp_block, <a class="code" href="bmdef_8h.html#a6a7c8b8ee3f3b60ab907c1699acb7aa0">BMGAP_PTR</a>(blk_src));</div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  blk_src = tmp_block;</div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  }</div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="comment">// pick random bits source block to target</span></div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  get_block_subset(blk_out, blk_src, take_count);</div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  }</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  }</div>
<div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  } <span class="comment">// for</span></div>
<div class="line"><a name="l00357"></a><span class="lineno"> 357</span> }</div>
<div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  </div>
<div class="line"><a name="l00359"></a><span class="lineno"> 359</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00360"></a><span class="lineno"> 360</span> <span class="keywordtype">unsigned</span> random_subset<BV>::compute_take_count(</div>
<div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keywordtype">unsigned</span> bc,</div>
<div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  size_type in_count,</div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  size_type sample_count) <a class="code" href="bmdef_8h.html#a40d7d3c011d2128b1f0c392127d7d61e">BMNOEXCEPT</a></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> {</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  <span class="keywordtype">float</span> block_percent = float(bc) / float(in_count);</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordtype">float</span> bits_to_take = float(sample_count) * block_percent;</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  bits_to_take += 0.99f;</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keywordtype">unsigned</span> to_take = unsigned(bits_to_take);</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="keywordflow">if</span> (to_take > bc)</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  to_take = bc;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keywordflow">return</span> to_take;</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span> }</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  </div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  </div>
<div class="line"><a name="l00375"></a><span class="lineno"> 375</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00376"></a><span class="lineno"> 376</span> <span class="keywordtype">void</span> random_subset<BV>::get_block_subset(<a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_out,</div>
<div class="line"><a name="l00377"></a><span class="lineno"> 377</span>  <span class="keyword">const</span> <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_src,</div>
<div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  <span class="keywordtype">unsigned</span> take_count)</div>
<div class="line"><a name="l00379"></a><span class="lineno"> 379</span> {</div>
<div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> rounds = 0; take_count && rounds < 10; ++rounds)</div>
<div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  {</div>
<div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="comment">// pick random scan start and scan direction</span></div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordtype">unsigned</span> i = unsigned(rand()) % <a class="code" href="namespacebm.html#a91319dbc0d0e1bf3a3efc4d92bac7972">bm::set_block_size</a>;</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  <span class="keywordtype">unsigned</span> new_count;</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  </div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">for</span> (; i < <a class="code" href="namespacebm.html#a91319dbc0d0e1bf3a3efc4d92bac7972">bm::set_block_size</a> && take_count; ++i)</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  {</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">if</span> (blk_src[i] && (blk_out[i] != blk_src[i]))</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  {</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  new_count = process_word(blk_out, blk_src, i, take_count);</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  take_count -= new_count;</div>
<div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  }</div>
<div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  } <span class="comment">// for i</span></div>
<div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  </div>
<div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  } <span class="comment">// for</span></div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="comment">// if masked scan did not produce enough results..</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">if</span> (take_count)</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  {</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="comment">// Find all vacant bits: do logical (src SUB out)</span></div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < <a class="code" href="namespacebm.html#a91319dbc0d0e1bf3a3efc4d92bac7972">bm::set_block_size</a>; ++i)</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  {</div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  sub_block_[i] = blk_src[i] & ~blk_out[i];</div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  }</div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="comment">// now transform vacant bits to array, then pick random elements</span></div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  <span class="comment">//</span></div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordtype">unsigned</span> arr_len = <a class="code" href="group__bitfunc.html#ga23c09fb611870fd798f7e13f2202adcf">bm::bit_convert_to_arr</a>(bit_list_,</div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  sub_block_, </div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <a class="code" href="namespacebm.html#ad0b8714080144ac70197840ff96752b7">bm::gap_max_bits</a>, </div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <a class="code" href="namespacebm.html#ad0b8714080144ac70197840ff96752b7">bm::gap_max_bits</a>,</div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  0);</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(arr_len);</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  get_random_array(blk_out, bit_list_, arr_len, take_count); </div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  }</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span> }</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  </div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span> <span class="keywordtype">unsigned</span> random_subset<BV>::process_word(<a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_out, </div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <span class="keyword">const</span> <a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_src,</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordtype">unsigned</span> nword,</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordtype">unsigned</span> take_count) <a class="code" href="bmdef_8h.html#a40d7d3c011d2128b1f0c392127d7d61e">BMNOEXCEPT</a></div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span> {</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  <span class="keywordtype">unsigned</span> new_bits, mask;</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  <span class="keywordflow">do</span> </div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  { </div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  mask = unsigned(rand());</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  mask ^= mask << 16;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  } <span class="keywordflow">while</span> (mask == 0);</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  </div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="keywordtype">unsigned</span> src_rand = blk_src[nword] & mask;</div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  new_bits = src_rand & ~blk_out[nword];</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordflow">if</span> (new_bits)</div>
<div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  {</div>
<div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordtype">unsigned</span> new_count = <a class="code" href="group__bitfunc.html#ga0cac3b111c2a2f9cc1995d2c3e94f361">bm::word_bitcount</a>(new_bits);</div>
<div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  </div>
<div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="comment">// check if we accidentally picked more bits than needed</span></div>
<div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordflow">if</span> (new_count > take_count)</div>
<div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  {</div>
<div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(take_count);</div>
<div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  </div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  <span class="keywordtype">unsigned</span> <span class="keywordtype">char</span> blist[64];</div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordtype">unsigned</span> arr_size = <a class="code" href="group__bitfunc.html#gac943cc41087ed7e5dff78681c84743d2">bm::bitscan_popcnt</a>(new_bits, blist);</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(arr_size == new_count);</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  std::random_shuffle(blist, blist + arr_size);</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  <span class="keywordtype">unsigned</span> value = 0;</div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j = 0; j < take_count; ++j)</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  {</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  value |= (1u << blist[j]);</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  }</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  new_bits = value;</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  new_count = take_count;</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  </div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>(<a class="code" href="group__bitfunc.html#ga0cac3b111c2a2f9cc1995d2c3e94f361">bm::word_bitcount</a>(new_bits) == take_count);</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  <a class="code" href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a>((new_bits & ~blk_src[nword]) == 0);</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span>  }</div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  </div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  blk_out[nword] |= new_bits;</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">return</span> new_count;</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  }</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">return</span> 0; </div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> }</div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  </div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  </div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span> <span class="keyword">template</span><<span class="keyword">class</span> BV></div>
<div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="keywordtype">void</span> random_subset<BV>::get_random_array(<a class="code" href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a>* blk_out, </div>
<div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  <a class="code" href="namespacebm.html#ac654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a>* <a class="code" href="group__bitfunc.html#gacc36542d24cdaf04dbb85abdfd0f4d05">bit_list</a>,</div>
<div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keywordtype">unsigned</span> bit_list_size,</div>
<div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordtype">unsigned</span> count)</div>
<div class="line"><a name="l00470"></a><span class="lineno"> 470</span> {</div>
<div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  std::random_shuffle(<a class="code" href="group__bitfunc.html#gacc36542d24cdaf04dbb85abdfd0f4d05">bit_list</a>, <a class="code" href="group__bitfunc.html#gacc36542d24cdaf04dbb85abdfd0f4d05">bit_list</a> + bit_list_size);</div>
<div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i < count; ++i)</div>
<div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  {</div>
<div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <a class="code" href="group__bitfunc.html#ga6bc8e5492880bc21aa94c34f4f96e27d">bm::set_bit</a>(blk_out, <a class="code" href="group__bitfunc.html#gacc36542d24cdaf04dbb85abdfd0f4d05">bit_list</a>[i]);</div>
<div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  }</div>
<div class="line"><a name="l00476"></a><span class="lineno"> 476</span> }</div>
<div class="line"><a name="l00477"></a><span class="lineno"> 477</span>  </div>
<div class="line"><a name="l00478"></a><span class="lineno"> 478</span> } <span class="comment">// namespace</span></div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  </div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> <span class="preprocessor">#include "<a class="code" href="bmundef_8h.html">bmundef.h</a>"</span></div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  </div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="preprocessor">#endif</span></div>
</div><!-- fragment --></div><!-- contents -->
<div class="ttc" id="aclassbm_1_1bvector_html_ac9ed62250af37ade811aaf20b7a8d9a2"><div class="ttname"><a href="classbm_1_1bvector.html#ac9ed62250af37ade811aaf20b7a8d9a2">bm::bvector::rs_index_type</a></div><div class="ttdeci">rs_index< allocator_type > rs_index_type</div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00831">bm.h:831</a></div></div>
<div class="ttc" id="abmfunc_8h_html"><div class="ttname"><a href="bmfunc_8h.html">bmfunc.h</a></div><div class="ttdoc">Bit manipulation primitives (internal)</div></div>
<div class="ttc" id="aclassbm_1_1random__subset_html_a3e0b204d64051edfc8a8dec0426f553c"><div class="ttname"><a href="classbm_1_1random__subset.html#a3e0b204d64051edfc8a8dec0426f553c">bm::random_subset::bvector_type</a></div><div class="ttdeci">BV bvector_type</div><div class="ttdef"><b>Definition:</b> <a href="bmrandom_8h_source.html#l00059">bmrandom.h:59</a></div></div>
<div class="ttc" id="abmdef_8h_html_a7bc243edc0a5e82979d6bf63f4debb9a"><div class="ttname"><a href="bmdef_8h.html#a7bc243edc0a5e82979d6bf63f4debb9a">BM_IS_GAP</a></div><div class="ttdeci">#define BM_IS_GAP(ptr)</div><div class="ttdef"><b>Definition:</b> <a href="bmdef_8h_source.html#l00181">bmdef.h:181</a></div></div>
<div class="ttc" id="anamespacebm_html_a91319dbc0d0e1bf3a3efc4d92bac7972"><div class="ttname"><a href="namespacebm.html#a91319dbc0d0e1bf3a3efc4d92bac7972">bm::set_block_size</a></div><div class="ttdeci">const unsigned set_block_size</div><div class="ttdef"><b>Definition:</b> <a href="bmconst_8h_source.html#l00054">bmconst.h:54</a></div></div>
<div class="ttc" id="agroup__gapfunc_html_ga15c823d2d5fcf129b65039ab5573ed45"><div class="ttname"><a href="group__gapfunc.html#ga15c823d2d5fcf129b65039ab5573ed45">bm::gap_convert_to_arr</a></div><div class="ttdeci">D gap_convert_to_arr(D *BMRESTRICT dest, const T *BMRESTRICT buf, unsigned dest_len, bool invert=false) BMNOEXCEPT</div><div class="ttdoc">Convert gap block into array of ints corresponding to 1 bits.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l04320">bmfunc.h:4320</a></div></div>
<div class="ttc" id="abmdef_8h_html_a6a7c8b8ee3f3b60ab907c1699acb7aa0"><div class="ttname"><a href="bmdef_8h.html#a6a7c8b8ee3f3b60ab907c1699acb7aa0">BMGAP_PTR</a></div><div class="ttdeci">#define BMGAP_PTR(ptr)</div><div class="ttdef"><b>Definition:</b> <a href="bmdef_8h_source.html#l00179">bmdef.h:179</a></div></div>
<div class="ttc" id="anamespacebm_html_ad2f0fe59a771c0f0478dbd52fcae04fe"><div class="ttname"><a href="namespacebm.html#ad2f0fe59a771c0f0478dbd52fcae04fe">bm::get_block_coord</a></div><div class="ttdeci">void get_block_coord(BI_TYPE nb, unsigned &i, unsigned &j) BMNOEXCEPT</div><div class="ttdoc">Recalc linear bvector block index into 2D matrix coordinates.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l00147">bmfunc.h:147</a></div></div>
<div class="ttc" id="abmundef_8h_html"><div class="ttname"><a href="bmundef_8h.html">bmundef.h</a></div><div class="ttdoc">pre-processor un-defines to avoid global space pollution (internal)</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="agroup__bitfunc_html_ga23c09fb611870fd798f7e13f2202adcf"><div class="ttname"><a href="group__bitfunc.html#ga23c09fb611870fd798f7e13f2202adcf">bm::bit_convert_to_arr</a></div><div class="ttdeci">T bit_convert_to_arr(T *BMRESTRICT dest, const unsigned *BMRESTRICT src, bm::id_t bits, unsigned dest_len, unsigned mask=0) BMNOEXCEPT</div><div class="ttdoc">Convert bit block into an array of ints corresponding to 1 bits.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l07822">bmfunc.h:7822</a></div></div>
<div class="ttc" id="abmdef_8h_html_a40d7d3c011d2128b1f0c392127d7d61e"><div class="ttname"><a href="bmdef_8h.html#a40d7d3c011d2128b1f0c392127d7d61e">BMNOEXCEPT</a></div><div class="ttdeci">#define BMNOEXCEPT</div><div class="ttdef"><b>Definition:</b> <a href="bmdef_8h_source.html#l00079">bmdef.h:79</a></div></div>
<div class="ttc" id="anamespacebm_html_ac654d6319039a86546d235a236fc7cf6"><div class="ttname"><a href="namespacebm.html#ac654d6319039a86546d235a236fc7cf6">bm::gap_word_t</a></div><div class="ttdeci">unsigned short gap_word_t</div><div class="ttdef"><b>Definition:</b> <a href="bmconst_8h_source.html#l00077">bmconst.h:77</a></div></div>
<div class="ttc" id="agroup__gapfunc_html_gab62a99c0c34e3e1683699658b1e1226f"><div class="ttname"><a href="group__gapfunc.html#gab62a99c0c34e3e1683699658b1e1226f">bm::gap_convert_to_bitset</a></div><div class="ttdeci">void gap_convert_to_bitset(unsigned *BMRESTRICT dest, const T *BMRESTRICT buf) BMNOEXCEPT</div><div class="ttdoc">GAP block to bitblock conversion.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l03859">bmfunc.h:3859</a></div></div>
<div class="ttc" id="agroup__bitfunc_html_gacc36542d24cdaf04dbb85abdfd0f4d05"><div class="ttname"><a href="group__bitfunc.html#gacc36542d24cdaf04dbb85abdfd0f4d05">bm::bit_list</a></div><div class="ttdeci">unsigned bit_list(T w, B *bits) BMNOEXCEPT</div><div class="ttdoc">Unpacks word into list of ON bit indexes.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l00438">bmfunc.h:438</a></div></div>
<div class="ttc" id="abmdef_8h_html_aa44515fab0ace8928d1cb82009a95bf8"><div class="ttname"><a href="bmdef_8h.html#aa44515fab0ace8928d1cb82009a95bf8">BM_ASSERT</a></div><div class="ttdeci">#define BM_ASSERT</div><div class="ttdef"><b>Definition:</b> <a href="bmdef_8h_source.html#l00130">bmdef.h:130</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_1random__subset_html_ab47431e0fe23053d0dc5d3799822c109"><div class="ttname"><a href="classbm_1_1random__subset.html#ab47431e0fe23053d0dc5d3799822c109">bm::random_subset::random_subset</a></div><div class="ttdeci">random_subset()</div><div class="ttdef"><b>Definition:</b> <a href="bmrandom_8h_source.html#l00128">bmrandom.h:128</a></div></div>
<div class="ttc" id="abmdef_8h_html"><div class="ttname"><a href="bmdef_8h.html">bmdef.h</a></div><div class="ttdoc">Definitions(internal)</div></div>
<div class="ttc" id="anamespacebm_html_ad0b8714080144ac70197840ff96752b7"><div class="ttname"><a href="namespacebm.html#ad0b8714080144ac70197840ff96752b7">bm::gap_max_bits</a></div><div class="ttdeci">const unsigned gap_max_bits</div><div class="ttdef"><b>Definition:</b> <a href="bmconst_8h_source.html#l00080">bmconst.h:80</a></div></div>
<div class="ttc" id="agroup__bitfunc_html_ga0cac3b111c2a2f9cc1995d2c3e94f361"><div class="ttname"><a href="group__bitfunc.html#ga0cac3b111c2a2f9cc1995d2c3e94f361">bm::word_bitcount</a></div><div class="ttdeci">BMFORCEINLINE bm::id_t word_bitcount(bm::id_t w) BMNOEXCEPT</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l00197">bmfunc.h:197</a></div></div>
<div class="ttc" id="aclassbm_1_1random__subset_html_a6cd4b5521110aad7f8c8511b88d11bff"><div class="ttname"><a href="classbm_1_1random__subset.html#a6cd4b5521110aad7f8c8511b88d11bff">bm::random_subset::~random_subset</a></div><div class="ttdeci">~random_subset()</div><div class="ttdef"><b>Definition:</b> <a href="bmrandom_8h_source.html#l00134">bmrandom.h:134</a></div></div>
<div class="ttc" id="anamespacebm_html"><div class="ttname"><a href="namespacebm.html">bm</a></div><div class="ttdef"><b>Definition:</b> <a href="bm_8h_source.html#l00076">bm.h:76</a></div></div>
<div class="ttc" id="agroup__bitfunc_html_ga17448d1f4d05fa51668f112a16c69cc0"><div class="ttname"><a href="group__bitfunc.html#ga17448d1f4d05fa51668f112a16c69cc0">bm::bit_block_copy</a></div><div class="ttdeci">void bit_block_copy(bm::word_t *BMRESTRICT dst, const bm::word_t *BMRESTRICT src) BMNOEXCEPT</div><div class="ttdoc">Bitblock copy operation.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l05898">bmfunc.h:5898</a></div></div>
<div class="ttc" id="anamespacebm_html_a17fd5ba52db3ddda05e6f8dd5000a1a4"><div class="ttname"><a href="namespacebm.html#a17fd5ba52db3ddda05e6f8dd5000a1a4">bm::word_t</a></div><div class="ttdeci">unsigned int word_t</div><div class="ttdef"><b>Definition:</b> <a href="bmconst_8h_source.html#l00038">bmconst.h:38</a></div></div>
<div class="ttc" id="agroup__bitfunc_html_gac943cc41087ed7e5dff78681c84743d2"><div class="ttname"><a href="group__bitfunc.html#gac943cc41087ed7e5dff78681c84743d2">bm::bitscan_popcnt</a></div><div class="ttdeci">unsigned short bitscan_popcnt(bm::id_t w, B *bits, unsigned short offs) BMNOEXCEPT</div><div class="ttdoc">Unpacks word into list of ON bit indexes using popcnt method.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l00475">bmfunc.h:475</a></div></div>
<div class="ttc" id="aclassbm_1_1random__subset_html_ad8442e900a3e8802f245c9573961d7c2"><div class="ttname"><a href="classbm_1_1random__subset.html#ad8442e900a3e8802f245c9573961d7c2">bm::random_subset::size_type</a></div><div class="ttdeci">BV::size_type size_type</div><div class="ttdef"><b>Definition:</b> <a href="bmrandom_8h_source.html#l00060">bmrandom.h:60</a></div></div>
<div class="ttc" id="agroup__bitfunc_html_ga6bc8e5492880bc21aa94c34f4f96e27d"><div class="ttname"><a href="group__bitfunc.html#ga6bc8e5492880bc21aa94c34f4f96e27d">bm::set_bit</a></div><div class="ttdeci">BMFORCEINLINE void set_bit(unsigned *dest, unsigned bitpos) BMNOEXCEPT</div><div class="ttdoc">Set 1 bit in a block.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l03125">bmfunc.h:3125</a></div></div>
<div class="ttc" id="agroup__bitfunc_html_gab8357c5cff5e2dbf1b59208f6dd543b6"><div class="ttname"><a href="group__bitfunc.html#gab8357c5cff5e2dbf1b59208f6dd543b6">bm::bit_block_set</a></div><div class="ttdeci">void bit_block_set(bm::word_t *BMRESTRICT dst, bm::word_t value) BMNOEXCEPT</div><div class="ttdoc">Bitblock memset operation.</div><div class="ttdef"><b>Definition:</b> <a href="bmfunc_8h_source.html#l03841">bmfunc.h:3841</a></div></div>
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