| <!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 1.9.1"/> |
| <meta name="viewport" content="width=device-width, initial-scale=1"/> |
| <title>datasketches-cpp: sampling/include/ebpps_sample_impl.hpp 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="search/search.css" rel="stylesheet" type="text/css"/> |
| <script type="text/javascript" src="search/searchdata.js"></script> |
| <script type="text/javascript" src="search/search.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">datasketches-cpp |
| </div> |
| </td> |
| </tr> |
| </tbody> |
| </table> |
| </div> |
| <!-- end header part --> |
| <!-- Generated by Doxygen 1.9.1 --> |
| <script type="text/javascript"> |
| /* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&dn=gpl-2.0.txt GPL-v2 */ |
| var searchBox = new SearchBox("searchBox", "search",false,'Search','.html'); |
| /* @license-end */ |
| </script> |
| <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('',true,false,'search.php','Search'); |
| $(document).ready(function() { init_search(); }); |
| }); |
| /* @license-end */</script> |
| <div id="main-nav"></div> |
| <!-- window showing the filter options --> |
| <div id="MSearchSelectWindow" |
| onmouseover="return searchBox.OnSearchSelectShow()" |
| onmouseout="return searchBox.OnSearchSelectHide()" |
| onkeydown="return searchBox.OnSearchSelectKey(event)"> |
| </div> |
| |
| <!-- iframe showing the search results (closed by default) --> |
| <div id="MSearchResultsWindow"> |
| <iframe src="javascript:void(0)" frameborder="0" |
| name="MSearchResults" id="MSearchResults"> |
| </iframe> |
| </div> |
| |
| <div id="nav-path" class="navpath"> |
| <ul> |
| <li class="navelem"><a class="el" href="dir_135820457b1e8e8dc5343e26fb29c1f8.html">sampling</a></li><li class="navelem"><a class="el" href="dir_577378e109fcef5e822b70d599376114.html">include</a></li> </ul> |
| </div> |
| </div><!-- top --> |
| <div class="header"> |
| <div class="headertitle"> |
| <div class="title">ebpps_sample_impl.hpp</div> </div> |
| </div><!--header--> |
| <div class="contents"> |
| <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"> * Licensed to the Apache Software Foundation (ASF) under one</span></div> |
| <div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div> |
| <div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div> |
| <div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div> |
| <div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> * "License"); you may not use this file except in compliance</span></div> |
| <div class="line"><a name="l00008"></a><span class="lineno"> 8</span> <span class="comment"> * with the License. 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,</span></div> |
| <div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="comment"> * software distributed under the License is distributed on an</span></div> |
| <div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="comment"> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div> |
| <div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="comment"> * KIND, either express or implied. See the License for the</span></div> |
| <div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="comment"> * under the License.</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>  </div> |
| <div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#ifndef _EBPPS_SAMPLE_IMPL_HPP_</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define _EBPPS_SAMPLE_IMPL_HPP_</span></div> |
| <div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  </div> |
| <div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#include "common_defs.hpp"</span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "conditional_forward.hpp"</span></div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "ebpps_sample.hpp"</span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "serde.hpp"</span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  </div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include <cmath></span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include <string></span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <sstream></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="keyword">namespace </span><a class="code" href="namespacedatasketches.html">datasketches</a> {</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">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> ebpps_sample<T,A>::ebpps_sample(uint32_t reserved_size, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  allocator_(allocator),</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  c_(0.0),</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  partial_item_(),</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  data_(allocator)</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>  data_.reserve(reserved_size);</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>  </div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keyword">template</span><<span class="keyword">typename</span> TT></div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> ebpps_sample<T,A>::ebpps_sample(TT&& item, <span class="keywordtype">double</span> theta, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  allocator_(allocator),</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  c_(theta),</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  partial_item_(),</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  data_(allocator)</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>  <span class="keywordflow">if</span> (theta == 1.0) {</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  data_.reserve(1);</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  data_.emplace_back(std::forward<TT>(item));</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  partial_item_.emplace(std::forward<TT>(item));</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>  }</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> ebpps_sample<T,A>::ebpps_sample(std::vector<T, A>&& data, optional<T>&& partial_item, <span class="keywordtype">double</span> c, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  allocator_(allocator),</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  c_(c),</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  partial_item_(partial_item),</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  data_(data, allocator)</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">auto</span> ebpps_sample<T,A>::get_sample() const -> result_type {</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordtype">double</span> unused;</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c_, &unused);</div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> include_partial = next_double() < c_frac;</div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="keyword">const</span> uint32_t result_size = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size()) + (include_partial ? 1 : 0);</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>  result_type result;</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  result.reserve(result_size);</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  std::copy(data_.begin(), data_.end(), std::back_inserter(result));</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">if</span> (include_partial)</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  result.emplace_back(<span class="keyword">static_cast<</span><span class="keyword">const </span>T&<span class="keyword">></span>(*partial_item_));</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>  <span class="keywordflow">return</span> result;</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span> }</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::downsample(<span class="keywordtype">double</span> theta) {</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">if</span> (theta >= 1.0) <span class="keywordflow">return</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>  <span class="keyword">const</span> <span class="keywordtype">double</span> new_c = theta * c_;</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">double</span> new_c_int;</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> new_c_frac = std::modf(new_c, &new_c_int);</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c_, &c_int);</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  </div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">if</span> (new_c_int == 0.0) {</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="comment">// no full items retained</span></div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  <span class="keywordflow">if</span> (next_double() > (c_frac / c_)) {</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  swap_with_partial();</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  }</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  data_.clear();</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (new_c_int == c_int) {</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="comment">// no items deleted</span></div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keywordflow">if</span> (next_double() > (1 - theta * c_frac)/(1 - new_c_frac)) {</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  swap_with_partial();</div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  }</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (next_double() < theta * c_frac) {</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  <span class="comment">// subsample data in random order; last item is partial</span></div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="comment">// create sample size new_c_int then swap_with_partial()</span></div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  subsample(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(new_c_int));</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  swap_with_partial();</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="comment">// create sample size new_c_int + 1 then move_one_to_partial)</span></div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  subsample(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(new_c_int) + 1);</div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  move_one_to_partial();</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  }</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  }</div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (new_c == new_c_int)</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  partial_item_.reset();</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>  c_ = new_c;</div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> }</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  </div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="keyword">template</span><<span class="keyword">typename</span> FwdSample></div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::merge(FwdSample&& other) {</div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c_, &c_int);</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>  <span class="keywordtype">double</span> unused;</div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> other_c_frac = std::modf(other.c_, &unused);</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="comment">// update c_ here but do NOT recompute fractional part yet</span></div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  c_ += other.c_;</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="keywordflow">for</span> (uint32_t i = 0; i < other.data_.size(); ++i)</div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  data_.emplace_back(conditional_forward<FwdSample>(other.data_[i]));</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="comment">// This modifies the original algorithm slightly due to numeric</span></div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="comment">// precision issues. Specifically, the test if c_frac + other_c_frac == 1.0</span></div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="comment">// happens before tests for < 1.0 or > 1.0 and can also be triggered</span></div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="comment">// if c_ == floor(c_) (the updated value of c_, not the input).</span></div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="comment">//</span></div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="comment">// We can still run into issues where c_frac + other_c_frac == epsilon</span></div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="comment">// and the first case would have ideally triggered. As a result, we must</span></div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  <span class="comment">// check if the partial item exists before adding to the data_ vector.</span></div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  </div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  <span class="keywordflow">if</span> (c_frac == 0.0 && other_c_frac == 0.0) {</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  partial_item_.reset();</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c_frac + other_c_frac == 1.0 || c_ == std::floor(c_)) {</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keywordflow">if</span> (next_double() <= c_frac) {</div> |
| <div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">if</span> (partial_item_)</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  data_.emplace_back(std::move(*partial_item_));</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">if</span> (other.partial_item_)</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  data_.emplace_back(conditional_forward<FwdSample>(*other.partial_item_));</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  }</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  partial_item_.reset();</div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c_frac + other_c_frac < 1.0) {</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  <span class="keywordflow">if</span> (next_double() > c_frac / (c_frac + other_c_frac)) {</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  set_partial(conditional_forward<FwdSample>(*other.partial_item_));</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>  } <span class="keywordflow">else</span> { <span class="comment">// c_frac + other_c_frac > 1</span></div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">if</span> (next_double() <= (1 - c_frac) / ((1 - c_frac) + (1 - other_c_frac))) {</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  data_.emplace_back(conditional_forward<FwdSample>(*other.partial_item_));</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  data_.emplace_back(std::move(*partial_item_));</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  partial_item_.reset();</div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  set_partial(conditional_forward<FwdSample>(*other.partial_item_));</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> }</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="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span> string<A> ebpps_sample<T ,A>::to_string()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  std::ostringstream oss;</div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  oss << <span class="stringliteral">" sample:"</span> << std::endl;</div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  uint32_t idx = 0;</div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> T& item : data_)</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  oss << <span class="stringliteral">"\t"</span> << idx++ << <span class="stringliteral">":\t"</span> << item << std::endl;</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  oss << <span class="stringliteral">" partial: "</span> << (bool(partial_item_) ? (*partial_item_) : <span class="stringliteral">"NULL"</span>) << std::endl;</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>  <span class="keywordflow">return</span> oss.str();</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">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::subsample(uint32_t num_samples) {</div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="comment">// we can perform a Fisher-Yates style shuffle, stopping after</span></div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="comment">// num_samples points since subsequent swaps would only be</span></div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="comment">// between items after num_samples. This is valid since a</span></div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="comment">// point from anywhere in the initial array would be eligible</span></div> |
| <div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="comment">// to end up in the final subsample.</span></div> |
| <div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  </div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">if</span> (num_samples == data_.size()) <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  </div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keyword">auto</span> erase_start = data_.begin();</div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  uint32_t data_len = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size());</div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < num_samples; ++i, ++erase_start) {</div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  uint32_t j = i + random_idx(data_len - i);</div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  std::swap(data_[i], data_[j]);</div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  }</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>  data_.erase(erase_start, data_.end());</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>  </div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span> <span class="keyword">template</span><<span class="keyword">typename</span> FwdItem></div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::set_partial(FwdItem&& item) {</div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keywordflow">if</span> (partial_item_)</div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  *partial_item_ = conditional_forward<FwdItem>(item);</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  partial_item_.emplace(conditional_forward<FwdItem>(item));</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>  </div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::move_one_to_partial() {</div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> idx = random_idx(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size()));</div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  <span class="comment">// swap selected item to end so we can delete it easily</span></div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> last_idx = data_.size() - 1;</div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">if</span> (idx != last_idx) {</div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  std::swap(data_[idx], data_[last_idx]);</div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  }</div> |
| <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  </div> |
| <div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  set_partial(std::move(data_[last_idx]));</div> |
| <div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  </div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  data_.pop_back();</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span> }</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  </div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::swap_with_partial() {</div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keywordflow">if</span> (partial_item_) {</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> idx = random_idx(<span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size()));</div> |
| <div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  std::swap(data_[idx], *partial_item_);</div> |
| <div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  move_one_to_partial();</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  }</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span> }</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  </div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::reset() {</div> |
| <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  c_ = 0.0;</div> |
| <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  partial_item_.reset();</div> |
| <div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  data_.clear();</div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span> }</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span> <span class="keywordtype">double</span> ebpps_sample<T,A>::get_c()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">return</span> c_;</div> |
| <div class="line"><a name="l00249"></a><span class="lineno"> 249</span> }</div> |
| <div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  </div> |
| <div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span> <span class="keyword">auto</span> ebpps_sample<T,A>::get_full_items() const -> result_type {</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  <span class="keywordflow">return</span> result_type(data_);</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</span> }</div> |
| <div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  </div> |
| <div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="keywordtype">bool</span> ebpps_sample<T,A>::has_partial_item()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="keywordflow">return</span> bool(partial_item_);</div> |
| <div class="line"><a name="l00259"></a><span class="lineno"> 259</span> }</div> |
| <div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  </div> |
| <div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00262"></a><span class="lineno"> 262</span> T ebpps_sample<T,A>::get_partial_item()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">if</span> (!partial_item_) <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"Call to get_partial_item() when no partial item exists"</span>);</div> |
| <div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  <span class="keywordflow">return</span> *partial_item_;</div> |
| <div class="line"><a name="l00265"></a><span class="lineno"> 265</span> }</div> |
| <div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  </div> |
| <div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00268"></a><span class="lineno"> 268</span> uint32_t ebpps_sample<T,A>::random_idx(uint32_t max) {</div> |
| <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keyword">static</span> std::uniform_int_distribution<uint32_t> dist;</div> |
| <div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  <span class="keywordflow">return</span> dist(random_utils::rand, std::uniform_int_distribution<uint32_t>::param_type(0, max - 1));</div> |
| <div class="line"><a name="l00271"></a><span class="lineno"> 271</span> }</div> |
| <div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  </div> |
| <div class="line"><a name="l00273"></a><span class="lineno"> 273</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="keywordtype">double</span> ebpps_sample<T,A>::next_double() {</div> |
| <div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keywordflow">return</span> random_utils::next_double(random_utils::rand);</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>  </div> |
| <div class="line"><a name="l00278"></a><span class="lineno"> 278</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00279"></a><span class="lineno"> 279</span> uint32_t ebpps_sample<T,A>::get_num_retained_items()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(data_.size() + (partial_item_ ? 1 : 0));</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> <span class="comment">// implementation for fixed-size arithmetic types (integral and floating point)</span></div> |
| <div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00285"></a><span class="lineno"> 285</span> template<typename TT, typename SerDe, typename std::enable_if<std::is_arithmetic<TT>::value, <span class="keywordtype">int</span>>::type></div> |
| <div class="line"><a name="l00286"></a><span class="lineno"> 286</span> <span class="keywordtype">size_t</span> ebpps_sample<T, A>::get_serialized_size_bytes(<span class="keyword">const</span> SerDe&)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keywordflow">if</span> (c_ == 0.0)</div> |
| <div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordflow">return</span> <span class="keyword">sizeof</span>(c_) + (data_.size() + (partial_item_ ? 1 : 0)) * <span class="keyword">sizeof</span>(T);</div> |
| <div class="line"><a name="l00291"></a><span class="lineno"> 291</span> }</div> |
| <div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  </div> |
| <div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="comment">// implementation for all other types</span></div> |
| <div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00295"></a><span class="lineno"> 295</span> template<typename TT, typename SerDe, typename std::enable_if<!std::is_arithmetic<TT>::value, <span class="keywordtype">int</span>>::type></div> |
| <div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="keywordtype">size_t</span> ebpps_sample<T, A>::get_serialized_size_bytes(<span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">if</span> (c_ == 0.0) <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  </div> |
| <div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keywordtype">size_t</span> num_bytes = <span class="keyword">sizeof</span>(c_);</div> |
| <div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  <span class="keywordflow">for</span> (<span class="keyword">auto</span> it : data_)</div> |
| <div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  num_bytes += sd.size_of_item(it);</div> |
| <div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  </div> |
| <div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="keywordflow">if</span> (partial_item_)</div> |
| <div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  num_bytes += sd.size_of_item(*partial_item_);</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>  <span class="keywordflow">return</span> num_bytes;</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>  </div> |
| <div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="keywordtype">size_t</span> ebpps_sample<T,A>::serialize(uint8_t* ptr, <span class="keyword">const</span> uint8_t* end_ptr, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  uint8_t* st_ptr = ptr;</div> |
| <div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  </div> |
| <div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  ensure_minimum_memory(end_ptr - ptr, <span class="keyword">sizeof</span>(c_));</div> |
| <div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  ptr += copy_to_mem(c_, ptr);</div> |
| <div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  </div> |
| <div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  ptr += sd.serialize(ptr, end_ptr - ptr, data_.data(), <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span><span class="keyword">></span>(data_.size()));</div> |
| <div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  </div> |
| <div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">if</span> (partial_item_) {</div> |
| <div class="line"><a name="l00320"></a><span class="lineno"> 320</span>  ptr += sd.serialize(ptr, end_ptr - ptr, &*partial_item_, 1);</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>  </div> |
| <div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">return</span> ptr - st_ptr;</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>  </div> |
| <div class="line"><a name="l00326"></a><span class="lineno"> 326</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00327"></a><span class="lineno"> 327</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="keywordtype">void</span> ebpps_sample<T,A>::serialize(std::ostream& os, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  write(os, c_);</div> |
| <div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  </div> |
| <div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  sd.serialize(os, data_.data(), <span class="keyword">static_cast<</span><span class="keywordtype">unsigned</span><span class="keyword">></span>(data_.size()));</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">if</span> (partial_item_)</div> |
| <div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  sd.serialize(os, &*partial_item_, 1);</div> |
| <div class="line"><a name="l00335"></a><span class="lineno"> 335</span>  </div> |
| <div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">if</span> (!os.good()) <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error writing to std::ostream"</span>);</div> |
| <div class="line"><a name="l00337"></a><span class="lineno"> 337</span> }</div> |
| <div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  </div> |
| <div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00341"></a><span class="lineno"> 341</span> std::pair<ebpps_sample<T, A>, <span class="keywordtype">size_t</span>> ebpps_sample<T, A>::deserialize(<span class="keyword">const</span> uint8_t* ptr, <span class="keywordtype">size_t</span> size, <span class="keyword">const</span> SerDe& sd, <span class="keyword">const</span> A& allocator) {</div> |
| <div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <span class="keyword">const</span> uint8_t* st_ptr = ptr;</div> |
| <div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  <span class="keyword">const</span> uint8_t* end_ptr = ptr + size;</div> |
| <div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  </div> |
| <div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  ensure_minimum_memory(size, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordtype">double</span> c;</div> |
| <div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  ptr += copy_from_mem(ptr, c);</div> |
| <div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keywordflow">if</span> (c < 0.0)</div> |
| <div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"sketch image has C < 0.0 during deserializaiton"</span>);</div> |
| <div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  </div> |
| <div class="line"><a name="l00351"></a><span class="lineno"> 351</span>  <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c, &c_int);</div> |
| <div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> has_partial = c_frac != 0.0;</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>  <span class="keyword">const</span> uint32_t num_full_items = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(c_int);</div> |
| <div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  A alloc(allocator);</div> |
| <div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  std::unique_ptr<T, items_deleter> items(alloc.allocate(num_full_items), items_deleter(allocator, <span class="keyword">false</span>, num_full_items));</div> |
| <div class="line"><a name="l00358"></a><span class="lineno"> 358</span>  ptr += sd.deserialize(ptr, end_ptr - ptr, items.get(), num_full_items);</div> |
| <div class="line"><a name="l00359"></a><span class="lineno"> 359</span>  <span class="comment">// serde did not throw, enable destructors</span></div> |
| <div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  items.get_deleter().set_destroy(<span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  std::vector<T, A> data(std::make_move_iterator(items.get()),</div> |
| <div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  std::make_move_iterator(items.get() + num_full_items),</div> |
| <div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  allocator);</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>  optional<T> partial_item;</div> |
| <div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">if</span> (has_partial) {</div> |
| <div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  optional<T> tmp; <span class="comment">// space to deserialize</span></div> |
| <div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  ptr += sd.deserialize(ptr, end_ptr - ptr, &*tmp, 1);</div> |
| <div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  <span class="comment">// serde did not throw so place item and clean up</span></div> |
| <div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  partial_item.emplace(*tmp);</div> |
| <div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  (*tmp).~T();</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>  <span class="keywordflow">return</span> std::pair<ebpps_sample<T,A>, <span class="keywordtype">size_t</span>>(</div> |
| <div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  ebpps_sample<T,A>(std::move(data), std::move(partial_item), c, allocator),</div> |
| <div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  ptr - st_ptr);</div> |
| <div class="line"><a name="l00377"></a><span class="lineno"> 377</span> }</div> |
| <div class="line"><a name="l00378"></a><span class="lineno"> 378</span>  </div> |
| <div class="line"><a name="l00379"></a><span class="lineno"> 379</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00380"></a><span class="lineno"> 380</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00381"></a><span class="lineno"> 381</span> ebpps_sample<T, A> ebpps_sample<T, A>::deserialize(std::istream& is, <span class="keyword">const</span> SerDe& sd, <span class="keyword">const</span> A& allocator) {</div> |
| <div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> c = read<double>(is);</div> |
| <div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">if</span> (c < 0.0)</div> |
| <div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"sketch image has C < 0.0 during deserializaiton"</span>);</div> |
| <div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  </div> |
| <div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(c, &c_int);</div> |
| <div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> has_partial = c_frac != 0.0;</div> |
| <div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  </div> |
| <div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keyword">const</span> uint32_t num_full_items = <span class="keyword">static_cast<</span>uint32_t<span class="keyword">></span>(c_int);</div> |
| <div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  A alloc(allocator);</div> |
| <div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  std::unique_ptr<T, items_deleter> items(alloc.allocate(num_full_items), items_deleter(allocator, <span class="keyword">false</span>, num_full_items));</div> |
| <div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  sd.deserialize(is, items.get(), num_full_items);</div> |
| <div class="line"><a name="l00394"></a><span class="lineno"> 394</span>  <span class="comment">// serde did not throw, enable destructors</span></div> |
| <div class="line"><a name="l00395"></a><span class="lineno"> 395</span>  items.get_deleter().set_destroy(<span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  std::vector<T, A> data(std::make_move_iterator(items.get()),</div> |
| <div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  std::make_move_iterator(items.get() + num_full_items),</div> |
| <div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  allocator);</div> |
| <div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  </div> |
| <div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  optional<T> partial_item;</div> |
| <div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keywordflow">if</span> (has_partial) {</div> |
| <div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  optional<T> tmp; <span class="comment">// space to deserialize</span></div> |
| <div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  sd.deserialize(is, &*tmp, 1);</div> |
| <div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="comment">// serde did not throw so place item and clean up</span></div> |
| <div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  partial_item.emplace(*tmp);</div> |
| <div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  (*tmp).~T();</div> |
| <div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  }</div> |
| <div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  </div> |
| <div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordflow">if</span> (!is.good()) <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error reading from std::istream"</span>);</div> |
| <div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  </div> |
| <div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="keywordflow">return</span> ebpps_sample<T,A>(std::move(data), std::move(partial_item), c, allocator);</div> |
| <div class="line"><a name="l00412"></a><span class="lineno"> 412</span> }</div> |
| <div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  </div> |
| <div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  </div> |
| <div class="line"><a name="l00415"></a><span class="lineno"> 415</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator ebpps_sample<T, A>::begin()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  <span class="keywordflow">return</span> const_iterator(<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l00418"></a><span class="lineno"> 418</span> }</div> |
| <div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  </div> |
| <div class="line"><a name="l00420"></a><span class="lineno"> 420</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator ebpps_sample<T, A>::end()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordflow">return</span> const_iterator(<span class="keyword">nullptr</span>);</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>  </div> |
| <div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  </div> |
| <div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="comment">// -------- ebpps_sketch::const_iterator implementation ---------</span></div> |
| <div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  </div> |
| <div class="line"><a name="l00428"></a><span class="lineno"> 428</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00429"></a><span class="lineno"> 429</span> ebpps_sample<T, A>::const_iterator::const_iterator(<span class="keyword">const</span> ebpps_sample* sample) :</div> |
| <div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  sample_(sample),</div> |
| <div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  idx_(0),</div> |
| <div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  use_partial_(false)</div> |
| <div class="line"><a name="l00433"></a><span class="lineno"> 433</span> {</div> |
| <div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <span class="keywordflow">if</span> (sample == <span class="keyword">nullptr</span>)</div> |
| <div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  <span class="keywordflow">return</span>;</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">// determine in advance if we use the partial item</span></div> |
| <div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="keywordtype">double</span> c_int;</div> |
| <div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> c_frac = std::modf(sample_->get_c(), &c_int);</div> |
| <div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  use_partial_ = sample->next_double() < c_frac;</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="comment">// sample with no items</span></div> |
| <div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  <span class="keywordflow">if</span> (sample_->data_.size() == 0 && use_partial_) {</div> |
| <div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  idx_ = PARTIAL_IDX;</div> |
| <div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  }</div> |
| <div class="line"><a name="l00446"></a><span class="lineno"> 446</span>  </div> |
| <div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keywordflow">if</span> (sample_->c_== 0.0 || (sample_->data_.size() == 0 && !sample_->has_partial_item())) { sample_ = <span class="keyword">nullptr</span>; }</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>  </div> |
| <div class="line"><a name="l00450"></a><span class="lineno"> 450</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00451"></a><span class="lineno"> 451</span> ebpps_sample<T, A>::const_iterator::const_iterator(<span class="keyword">const</span> const_iterator& other) :</div> |
| <div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  sample_(other.sample_),</div> |
| <div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  idx_(other.idx_),</div> |
| <div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  use_partial_(other.use_partial_)</div> |
| <div class="line"><a name="l00455"></a><span class="lineno"> 455</span> {}</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00458"></a><span class="lineno"> 458</span> <span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator& ebpps_sample<T, A>::const_iterator::operator++() {</div> |
| <div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  <span class="keywordflow">if</span> (sample_ == <span class="keyword">nullptr</span>)</div> |
| <div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (idx_ == PARTIAL_IDX) {</div> |
| <div class="line"><a name="l00462"></a><span class="lineno"> 462</span>  idx_ = sample_->data_.size();</div> |
| <div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  sample_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keywordflow">return</span> * <span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  }</div> |
| <div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  </div> |
| <div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  ++idx_;</div> |
| <div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  </div> |
| <div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">if</span> (idx_ == sample_->data_.size()) {</div> |
| <div class="line"><a name="l00470"></a><span class="lineno"> 470</span>  <span class="keywordflow">if</span> (use_partial_)</div> |
| <div class="line"><a name="l00471"></a><span class="lineno"> 471</span>  idx_ = PARTIAL_IDX;</div> |
| <div class="line"><a name="l00472"></a><span class="lineno"> 472</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00473"></a><span class="lineno"> 473</span>  sample_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  }</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>  <span class="keywordflow">return</span> *<span class="keyword">this</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>  </div> |
| <div class="line"><a name="l00479"></a><span class="lineno"> 479</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00480"></a><span class="lineno"> 480</span> <span class="keyword">typename</span> ebpps_sample<T, A>::const_iterator& ebpps_sample<T, A>::const_iterator::operator++(<span class="keywordtype">int</span>) {</div> |
| <div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  const_iterator tmp(*<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  operator++();</div> |
| <div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordflow">return</span> tmp;</div> |
| <div class="line"><a name="l00484"></a><span class="lineno"> 484</span> }</div> |
| <div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  </div> |
| <div class="line"><a name="l00486"></a><span class="lineno"> 486</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00487"></a><span class="lineno"> 487</span> <span class="keywordtype">bool</span> ebpps_sample<T, A>::const_iterator::operator==(<span class="keyword">const</span> const_iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordflow">if</span> (sample_ != other.sample_) <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordflow">if</span> (sample_ == <span class="keyword">nullptr</span>) <span class="keywordflow">return</span> <span class="keyword">true</span>; <span class="comment">// end (and we know other.sample_ is also null)</span></div> |
| <div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keywordflow">return</span> idx_ == other.idx_;</div> |
| <div class="line"><a name="l00491"></a><span class="lineno"> 491</span> }</div> |
| <div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  </div> |
| <div class="line"><a name="l00493"></a><span class="lineno"> 493</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00494"></a><span class="lineno"> 494</span> <span class="keywordtype">bool</span> ebpps_sample<T, A>::const_iterator::operator!=(<span class="keyword">const</span> const_iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordflow">return</span> !operator==(other);</div> |
| <div class="line"><a name="l00496"></a><span class="lineno"> 496</span> }</div> |
| <div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  </div> |
| <div class="line"><a name="l00498"></a><span class="lineno"> 498</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00499"></a><span class="lineno"> 499</span> <span class="keyword">auto</span> ebpps_sample<T, A>::const_iterator::operator*() const -> reference {</div> |
| <div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  <span class="keywordflow">if</span> (idx_ == PARTIAL_IDX)</div> |
| <div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  <span class="keywordflow">return</span> *(sample_->partial_item_);</div> |
| <div class="line"><a name="l00502"></a><span class="lineno"> 502</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keywordflow">return</span> sample_->data_[idx_];</div> |
| <div class="line"><a name="l00504"></a><span class="lineno"> 504</span> }</div> |
| <div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  </div> |
| <div class="line"><a name="l00506"></a><span class="lineno"> 506</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00507"></a><span class="lineno"> 507</span> <span class="keyword">auto</span> ebpps_sample<T, A>::const_iterator::operator->() const -> pointer {</div> |
| <div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <span class="keywordflow">return</span> **<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00509"></a><span class="lineno"> 509</span> }</div> |
| <div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  </div> |
| <div class="line"><a name="l00511"></a><span class="lineno"> 511</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00512"></a><span class="lineno"> 512</span> <span class="keyword">class </span>ebpps_sample<T, A>::items_deleter {</div> |
| <div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  <span class="keyword">public</span>:</div> |
| <div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  items_deleter(<span class="keyword">const</span> A& allocator, <span class="keywordtype">bool</span> destroy, <span class="keywordtype">size_t</span> num): allocator_(allocator), destroy_(destroy), num_(num) {}</div> |
| <div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="keywordtype">void</span> operator() (T* ptr) {</div> |
| <div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  <span class="keywordflow">if</span> (ptr != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keywordflow">if</span> (destroy_) {</div> |
| <div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < num_; ++i) {</div> |
| <div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  ptr[i].~T();</div> |
| <div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  }</div> |
| <div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  }</div> |
| <div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  allocator_.deallocate(ptr, num_);</div> |
| <div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  }</div> |
| <div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  }</div> |
| <div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keywordtype">void</span> set_destroy(<span class="keywordtype">bool</span> destroy) { destroy_ = destroy; }</div> |
| <div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keyword">private</span>:</div> |
| <div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  A allocator_;</div> |
| <div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  <span class="keywordtype">bool</span> destroy_;</div> |
| <div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  <span class="keywordtype">size_t</span> num_;</div> |
| <div class="line"><a name="l00530"></a><span class="lineno"> 530</span> };</div> |
| <div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  </div> |
| <div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  </div> |
| <div class="line"><a name="l00533"></a><span class="lineno"> 533</span> } <span class="comment">// namespace datasketches</span></div> |
| <div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  </div> |
| <div class="line"><a name="l00535"></a><span class="lineno"> 535</span> <span class="preprocessor">#endif </span><span class="comment">// _EBPPS_SAMPLE_IMPL_HPP_</span></div> |
| <div class="ttc" id="anamespacedatasketches_html"><div class="ttname"><a href="namespacedatasketches.html">datasketches</a></div><div class="ttdoc">DataSketches namespace.</div><div class="ttdef"><b>Definition:</b> binomial_bounds.hpp:38</div></div> |
| </div><!-- fragment --></div><!-- contents --> |
| <!-- start footer part --> |
| <hr class="footer"/><address class="footer"><small> |
| Generated by <a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1 |
| </small></address> |
| </body> |
| </html> |
