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| <div class="title">var_opt_union_impl.hpp</div> </div> |
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| <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 _VAR_OPT_UNION_IMPL_HPP_</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define _VAR_OPT_UNION_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 "var_opt_union.hpp"</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">#include <cmath></span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include <sstream></span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include <stdexcept></span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span>  </div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="keyword">namespace </span><a class="code" href="namespacedatasketches.html">datasketches</a> {</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> var_opt_union<T, A>::var_opt_union(uint32_t max_k, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  n_(0),</div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  outer_tau_numer_(0.0),</div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span>  outer_tau_denom_(0),</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  max_k_(max_k),</div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  allocator_(allocator),</div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  gadget_(max_k, var_opt_sketch<T, A>::<a class="code" href="namespacedatasketches_1_1theta__constants.html#a02799eee5e87428b1c72e6c4c282d68e">DEFAULT_RESIZE_FACTOR</a>, true, allocator)</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> {}</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  </div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> var_opt_union<T, A>::var_opt_union(<span class="keyword">const</span> var_opt_union& other) :</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  n_(other.n_),</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span>  outer_tau_numer_(other.outer_tau_numer_),</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  outer_tau_denom_(other.outer_tau_denom_),</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  max_k_(other.max_k_),</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  allocator_(other.allocator_),</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  gadget_(other.gadget_)</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span> {}</div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  </div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span> var_opt_union<T, A>::var_opt_union(var_opt_union&& other) noexcept :</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  n_(other.n_),</div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  outer_tau_numer_(other.outer_tau_numer_),</div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  outer_tau_denom_(other.outer_tau_denom_),</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  max_k_(other.max_k_),</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  allocator_(other.allocator_),</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  gadget_(std::move(other.gadget_))</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span> {}</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  </div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span> var_opt_union<T, A>::var_opt_union(uint64_t n, <span class="keywordtype">double</span> outer_tau_numer, uint64_t outer_tau_denom,</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  uint32_t max_k, var_opt_sketch<T, A>&& gadget, <span class="keyword">const</span> A& allocator) :</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  n_(n),</div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  outer_tau_numer_(outer_tau_numer),</div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  outer_tau_denom_(outer_tau_denom),</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  max_k_(max_k),</div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  allocator_(allocator),</div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  gadget_(gadget)</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span> {}</div> |
| <div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  </div> |
| <div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span> var_opt_union<T, A>::~var_opt_union() {}</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span> var_opt_union<T, A>& var_opt_union<T, A>::operator=(<span class="keyword">const</span> var_opt_union& other) {</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  var_opt_union union_copy(other);</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  std::swap(n_, union_copy.n_);</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  std::swap(outer_tau_numer_, union_copy.outer_tau_numer_);</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  std::swap(outer_tau_denom_, union_copy.outer_tau_denom_);</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  std::swap(max_k_, union_copy.max_k_);</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  std::swap(allocator_, other.allocator_);</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  std::swap(gadget_, union_copy.gadget_);</div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</div> |
| <div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div> |
| <div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span> var_opt_union<T, A>& var_opt_union<T, A>::operator=(var_opt_union&& other) {</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  std::swap(n_, other.n_);</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  std::swap(outer_tau_numer_, other.outer_tau_numer_);</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  std::swap(outer_tau_denom_, other.outer_tau_denom_);</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  std::swap(max_k_, other.max_k_);</div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  std::swap(allocator_, other.allocator_);</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  std::swap(gadget_, other.gadget_);</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00096"></a><span class="lineno"> 96</span> }</div> |
| <div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  </div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment"> * An empty union requires 8 bytes.</span></div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="comment"> * <pre></span></div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"> * Long || Start Byte Adr:</span></div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment"> * Adr:</span></div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"> * || 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |</span></div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="comment"> * 0 || Preamble_Longs | SerVer | FamID | Flags |---------Max Res. Size (K)---------|</span></div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="comment"> * </pre></span></div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span> <span class="comment"> * A non-empty sketch requires 24 bytes of preamble for an under-full sample; once there are</span></div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="comment"> * at least k items the sketch uses 32 bytes of preamble.</span></div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="comment"> * The count of items seen is limited to 48 bits (~256 trillion) even though there are adjacent</span></div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span> <span class="comment"> * unused preamble bits. The acceptance probability for an item is a double in the range [0,1),</span></div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"> * limiting us to 53 bits of randomness due to details of the IEEE floating point format. To</span></div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment"> * ensure meaningful probabilities as the items seen count approaches capacity, we intentionally</span></div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"> * use slightly fewer bits.</span></div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"> * Following the header are weights for the heavy items, then marks in the event this is a gadget.</span></div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment"> * The serialized items come last.</span></div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"> * </span></div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="comment"> * <pre></span></div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"> * Long || Start Byte Adr:</span></div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment"> * Adr:</span></div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"> * || 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |</span></div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="comment"> * 0 || Preamble_Longs | SerVer | FamID | Flags |---------Max Res. Size (K)---------|</span></div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="comment"> * || 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 |</span></div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="comment"> * 1 ||---------------------------Items Seen Count (N)--------------------------------|</span></div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="comment"> * || 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |</span></div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="comment"> * 2 ||------------------------Outer Tau Numerator (double)---------------------------|</span></div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment"> * || 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 |</span></div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * 3 ||----------------------Outer Tau Denominator (uint64_t)-------------------------|</span></div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> * </pre></span></div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  </div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span> var_opt_union<T, A> var_opt_union<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="l00140"></a><span class="lineno"> 140</span>  <span class="keyword">const</span> <span class="keyword">auto</span> preamble_longs = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  <span class="keyword">const</span> <span class="keyword">auto</span> serial_version = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  <span class="keyword">const</span> <span class="keyword">auto</span> family_id = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">const</span> <span class="keyword">auto</span> flags = read<uint8_t>(is);</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  <span class="keyword">const</span> <span class="keyword">auto</span> max_k = read<uint32_t>(is);</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>  check_preamble_longs(preamble_longs, flags);</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  check_family_and_serialization_version(family_id, serial_version);</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>  <span class="keywordflow">if</span> (max_k == 0 || max_k > var_opt_constants::MAX_K) {</div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"k must be at least 1 and less than 2^31 - 1"</span>);</div> |
| <div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  }</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>  <span class="keywordtype">bool</span> is_empty = flags & EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  </div> |
| <div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">if</span> (is_empty) {</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">if</span> (!is.good())</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error reading from std::istream"</span>); </div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  <span class="keywordflow">else</span></div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  <span class="keywordflow">return</span> var_opt_union(max_k);</div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span>  }</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  </div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <span class="keyword">const</span> <span class="keyword">auto</span> items_seen = read<uint64_t>(is);</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keyword">const</span> <span class="keyword">auto</span> outer_tau_numer = read<double>(is);</div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keyword">const</span> <span class="keyword">auto</span> outer_tau_denom = read<uint64_t>(is);</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  </div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  var_opt_sketch<T, A> gadget = <a class="code" href="classdatasketches_1_1var__opt__sketch.html#aea8f1c4a6d0189de0db5b5cd085c39b1">var_opt_sketch<T, A>::deserialize</a>(is, sd, allocator);</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>  <span class="keywordflow">if</span> (!is.good())</div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error reading from std::istream"</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>  <span class="keywordflow">return</span> var_opt_union(items_seen, outer_tau_numer, outer_tau_denom, max_k, std::move(gadget), allocator);</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> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span> var_opt_union<T, A> var_opt_union<T, A>::deserialize(<span class="keyword">const</span> <span class="keywordtype">void</span>* bytes, <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="l00177"></a><span class="lineno"> 177</span>  ensure_minimum_memory(size, 8);</div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">const</span> <span class="keywordtype">char</span>* ptr = <span class="keyword">static_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(bytes);</div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  uint8_t preamble_longs;</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  ptr += copy_from_mem(ptr, preamble_longs);</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  uint8_t serial_version;</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  ptr += copy_from_mem(ptr, serial_version);</div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  uint8_t family_id;</div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  ptr += copy_from_mem(ptr, family_id);</div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  uint8_t flags;</div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  ptr += copy_from_mem(ptr, flags);</div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  uint32_t max_k;</div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  ptr += copy_from_mem(ptr, max_k);</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  check_preamble_longs(preamble_longs, flags);</div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  check_family_and_serialization_version(family_id, serial_version);</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>  <span class="keywordflow">if</span> (max_k == 0 || max_k > var_opt_constants::MAX_K) {</div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"k must be at least 1 and less than 2^31 - 1"</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>  </div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  <span class="keywordtype">bool</span> is_empty = flags & EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  </div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  <span class="keywordflow">if</span> (is_empty) {</div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">return</span> var_opt_union(max_k);</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>  uint64_t items_seen;</div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  ptr += copy_from_mem(ptr, items_seen);</div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <span class="keywordtype">double</span> outer_tau_numer;</div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  ptr += copy_from_mem(ptr, outer_tau_numer);</div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  uint64_t outer_tau_denom;</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  ptr += copy_from_mem(ptr, outer_tau_denom);</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="keyword">const</span> <span class="keywordtype">size_t</span> gadget_size = size - (PREAMBLE_LONGS_NON_EMPTY << 3);</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  var_opt_sketch<T, A> gadget = <a class="code" href="classdatasketches_1_1var__opt__sketch.html#aea8f1c4a6d0189de0db5b5cd085c39b1">var_opt_sketch<T, A>::deserialize</a>(ptr, gadget_size, sd, allocator);</div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  </div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">return</span> var_opt_union(items_seen, outer_tau_numer, outer_tau_denom, max_k, std::move(gadget), allocator);</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>  </div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00218"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__union.html#a8762fed25b3024f07989976344dd0afb"> 218</a></span> <span class="keywordtype">size_t</span> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::get_serialized_size_bytes</a>(<span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">if</span> (n_ == 0) {</div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keywordflow">return</span> PREAMBLE_LONGS_EMPTY << 3;</div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  <span class="keywordflow">return</span> (PREAMBLE_LONGS_NON_EMPTY << 3) + gadget_.<a class="code" href="classdatasketches_1_1var__opt__union.html#a8762fed25b3024f07989976344dd0afb">get_serialized_size_bytes</a>(sd);</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> }</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00228"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__union.html#a538940c100e4353b3671ad452d3d3056"> 228</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::serialize</a>(std::ostream& os, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <span class="keywordtype">bool</span> empty = (n_ == 0);</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  </div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keyword">const</span> uint8_t serialization_version(SER_VER);</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  <span class="keyword">const</span> uint8_t family_id(FAMILY_ID);</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>  uint8_t preamble_longs;</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  uint8_t flags;</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="keywordflow">if</span> (empty) {</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  preamble_longs = PREAMBLE_LONGS_EMPTY;</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  flags = EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  preamble_longs = PREAMBLE_LONGS_NON_EMPTY;</div> |
| <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  flags = 0;</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>  </div> |
| <div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  write(os, preamble_longs);</div> |
| <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  write(os, serialization_version);</div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  write(os, family_id);</div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  write(os, flags);</div> |
| <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  write(os, max_k_);</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>  <span class="keywordflow">if</span> (!empty) {</div> |
| <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  write(os, n_);</div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  write(os, outer_tau_numer_);</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  write(os, outer_tau_denom_);</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  gadget_.serialize(os, sd);</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> }</div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  </div> |
| <div class="line"><a name="l00258"></a><span class="lineno"> 258</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe></div> |
| <div class="line"><a name="l00260"></a><span class="lineno"> 260</span> std::vector<uint8_t, AllocU8<A>> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::serialize</a>(<span class="keywordtype">unsigned</span> header_size_bytes, <span class="keyword">const</span> SerDe& sd)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> size = header_size_bytes + get_serialized_size_bytes(sd);</div> |
| <div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  std::vector<uint8_t, AllocU8<A>> bytes(size, 0, gadget_.allocator_);</div> |
| <div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  uint8_t* ptr = bytes.data() + header_size_bytes;</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="keyword">const</span> <span class="keywordtype">bool</span> empty = n_ == 0;</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">const</span> uint8_t serialization_version(SER_VER);</div> |
| <div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="keyword">const</span> uint8_t family_id(FAMILY_ID);</div> |
| <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  </div> |
| <div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  uint8_t preamble_longs;</div> |
| <div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  uint8_t flags;</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="keywordflow">if</span> (empty) {</div> |
| <div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  preamble_longs = PREAMBLE_LONGS_EMPTY;</div> |
| <div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  flags = EMPTY_FLAG_MASK;</div> |
| <div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  preamble_longs = PREAMBLE_LONGS_NON_EMPTY;</div> |
| <div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  flags = 0;</div> |
| <div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  }</div> |
| <div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  </div> |
| <div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  <span class="comment">// first prelong</span></div> |
| <div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  ptr += copy_to_mem(preamble_longs, ptr);</div> |
| <div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  ptr += copy_to_mem(serialization_version, ptr);</div> |
| <div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  ptr += copy_to_mem(family_id, ptr);</div> |
| <div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  ptr += copy_to_mem(flags, ptr);</div> |
| <div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  ptr += copy_to_mem(max_k_, ptr);</div> |
| <div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  </div> |
| <div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keywordflow">if</span> (!empty) {</div> |
| <div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  ptr += copy_to_mem(n_, ptr);</div> |
| <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  ptr += copy_to_mem(outer_tau_numer_, ptr);</div> |
| <div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  ptr += copy_to_mem(outer_tau_denom_, ptr);</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="keyword">auto</span> gadget_bytes = gadget_.serialize(0, sd);</div> |
| <div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  ptr += copy_to_mem(gadget_bytes.data(), ptr, gadget_bytes.size() * <span class="keyword">sizeof</span>(uint8_t));</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>  </div> |
| <div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  <span class="keywordflow">return</span> bytes;</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>  </div> |
| <div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00301"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__union.html#ad20897c5c8bd47f5d4005989bead0e55"> 301</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::reset</a>() {</div> |
| <div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  n_ = 0;</div> |
| <div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  outer_tau_numer_ = 0.0;</div> |
| <div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  outer_tau_denom_ = 0;</div> |
| <div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  gadget_.<a class="code" href="classdatasketches_1_1var__opt__union.html#ad20897c5c8bd47f5d4005989bead0e55">reset</a>();</div> |
| <div class="line"><a name="l00306"></a><span class="lineno"> 306</span> }</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="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00309"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__union.html#aed372241c10ffd041bee85602edb199a"> 309</a></span> string<A> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::to_string</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  <span class="comment">// Using a temporary stream for implementation here does not comply with AllocatorAwareContainer requirements.</span></div> |
| <div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  <span class="comment">// The stream does not support passing an allocator instance, and alternatives are complicated.</span></div> |
| <div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  std::ostringstream os;</div> |
| <div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  os << <span class="stringliteral">"### VarOpt Union SUMMARY:"</span> << std::endl;</div> |
| <div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  os << <span class="stringliteral">" n : "</span> << n_ << std::endl;</div> |
| <div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  os << <span class="stringliteral">" Max k : "</span> << max_k_ << std::endl;</div> |
| <div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  os << <span class="stringliteral">" Gadget Summary:"</span> << std::endl;</div> |
| <div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  os << gadget_.<a class="code" href="classdatasketches_1_1var__opt__union.html#aed372241c10ffd041bee85602edb199a">to_string</a>();</div> |
| <div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  os << <span class="stringliteral">"### END VarOpt Union SUMMARY"</span> << std::endl;</div> |
| <div class="line"><a name="l00319"></a><span class="lineno"> 319</span>  <span class="keywordflow">return</span> string<A>(os.str().c_str(), gadget_.allocator_);</div> |
| <div class="line"><a name="l00320"></a><span class="lineno"> 320</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00323"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__union.html#a34ccfdbae9cae36faf1093e12da38d0c"> 323</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::update</a>(<span class="keyword">const</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>& sk) {</div> |
| <div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  merge_items(sk);</div> |
| <div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  resolve_tau(sk);</div> |
| <div class="line"><a name="l00326"></a><span class="lineno"> 326</span> }</div> |
| <div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  </div> |
| <div class="line"><a name="l00328"></a><span class="lineno"> 328</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00329"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__union.html#a0271e8119772f1bbefe7e4e6f82431a3"> 329</a></span> <span class="keywordtype">void</span> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::update</a>(<a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>&& sk) {</div> |
| <div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  merge_items(std::move(sk));</div> |
| <div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  resolve_tau(sk); <span class="comment">// don't need items, so ok even if they've been moved out</span></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>  </div> |
| <div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="keywordtype">double</span> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::get_outer_tau</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">if</span> (outer_tau_denom_ == 0) {</div> |
| <div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  <span class="keywordflow">return</span> 0.0;</div> |
| <div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  <span class="keywordflow">return</span> outer_tau_numer_ / outer_tau_denom_;</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> }</div> |
| <div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  </div> |
| <div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="keywordtype">void</span> var_opt_union<T, A>::merge_items(<span class="keyword">const</span> var_opt_sketch<T, A>& sketch) {</div> |
| <div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="keywordflow">if</span> (sketch.n_ == 0) {</div> |
| <div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  }</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>  n_ += sketch.n_;</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="comment">// H region const_iterator</span></div> |
| <div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::const_iterator h_itr(sketch, <span class="keyword">false</span>, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00353"></a><span class="lineno"> 353</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::const_iterator h_end(sketch, <span class="keyword">true</span>, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00354"></a><span class="lineno"> 354</span>  <span class="keywordflow">while</span> (h_itr != h_end) {</div> |
| <div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  std::pair<const T&, const double> sample = *h_itr;</div> |
| <div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  gadget_.update(sample.first, sample.second, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  ++h_itr;</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>  </div> |
| <div class="line"><a name="l00360"></a><span class="lineno"> 360</span>  <span class="comment">// Weight-correcting R region iterator (const_iterator doesn't do the correction)</span></div> |
| <div class="line"><a name="l00361"></a><span class="lineno"> 361</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator r_itr(sketch, <span class="keyword">false</span>, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00362"></a><span class="lineno"> 362</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator r_end(sketch, <span class="keyword">true</span>, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00363"></a><span class="lineno"> 363</span>  <span class="keywordflow">while</span> (r_itr != r_end) {</div> |
| <div class="line"><a name="l00364"></a><span class="lineno"> 364</span>  std::pair<const T&, const double> sample = *r_itr;</div> |
| <div class="line"><a name="l00365"></a><span class="lineno"> 365</span>  gadget_.update(sample.first, sample.second, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  ++r_itr;</div> |
| <div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  }</div> |
| <div class="line"><a name="l00368"></a><span class="lineno"> 368</span> }</div> |
| <div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  </div> |
| <div class="line"><a name="l00370"></a><span class="lineno"> 370</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00371"></a><span class="lineno"> 371</span> <span class="keywordtype">void</span> var_opt_union<T, A>::merge_items(var_opt_sketch<T, A>&& sketch) {</div> |
| <div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keywordflow">if</span> (sketch.n_ == 0) {</div> |
| <div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  <span class="keywordflow">return</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>  </div> |
| <div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  n_ += sketch.n_;</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>  <span class="comment">// H region iterator</span></div> |
| <div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator h_itr(sketch, <span class="keyword">false</span>, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator h_end(sketch, <span class="keyword">true</span>, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keywordflow">while</span> (h_itr != h_end) {</div> |
| <div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  std::pair<T&, double> sample = *h_itr;</div> |
| <div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  gadget_.update(std::move(sample.first), sample.second, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  ++h_itr;</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>  </div> |
| <div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="comment">// Weight-correcting R region iterator</span></div> |
| <div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator r_itr(sketch, <span class="keyword">false</span>, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keyword">typename</span> var_opt_sketch<T, A>::iterator r_end(sketch, <span class="keyword">true</span>, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  <span class="keywordflow">while</span> (r_itr != r_end) {</div> |
| <div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  std::pair<T&, double> sample = *r_itr;</div> |
| <div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  gadget_.update(std::move(sample.first), sample.second, <span class="keyword">true</span>);</div> |
| <div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  ++r_itr;</div> |
| <div class="line"><a name="l00394"></a><span class="lineno"> 394</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>  </div> |
| <div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00398"></a><span class="lineno"> 398</span> <span class="keywordtype">void</span> var_opt_union<T, A>::resolve_tau(<span class="keyword">const</span> var_opt_sketch<T, A>& sketch) {</div> |
| <div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  <span class="keywordflow">if</span> (sketch.r_ > 0) {</div> |
| <div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> sketch_tau = sketch.get_tau();</div> |
| <div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> outer_tau = get_outer_tau();</div> |
| <div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  </div> |
| <div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="keywordflow">if</span> (outer_tau_denom_ == 0) {</div> |
| <div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="comment">// detect first estimation mode sketch and grab its tau</span></div> |
| <div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  outer_tau_numer_ = sketch.total_wt_r_;</div> |
| <div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  outer_tau_denom_ = sketch.r_;</div> |
| <div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sketch_tau > outer_tau) {</div> |
| <div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="comment">// switch to a bigger value of outer_tau</span></div> |
| <div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  outer_tau_numer_ = sketch.total_wt_r_;</div> |
| <div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  outer_tau_denom_ = sketch.r_;</div> |
| <div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sketch_tau == outer_tau) {</div> |
| <div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="comment">// Ok if previous equality test isn't quite perfect. Mistakes in either direction should</span></div> |
| <div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="comment">// be fairly benign.</span></div> |
| <div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="comment">// Without conceptually changing outer_tau, update number and denominator. In particular,</span></div> |
| <div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="comment">// add the total weight of the incoming reservoir to the running total.</span></div> |
| <div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  outer_tau_numer_ += sketch.total_wt_r_;</div> |
| <div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  outer_tau_denom_ += sketch.r_;</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="comment">// do nothing if sketch's tau is smaller than outer_tau</span></div> |
| <div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  }</div> |
| <div class="line"><a name="l00422"></a><span class="lineno"> 422</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> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00425"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__union.html#a28e630639a11dc71d7f72c4e0518b2fe"> 425</a></span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::get_result</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  <span class="comment">// If no marked items in H, gadget is already valid mathematically. We can return what is</span></div> |
| <div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  <span class="comment">// basically just a copy of the gadget.</span></div> |
| <div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordflow">if</span> (gadget_.num_marks_in_h_ == 0) {</div> |
| <div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  <span class="keywordflow">return</span> simple_gadget_coercer();</div> |
| <div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00431"></a><span class="lineno"> 431</span>  <span class="comment">// Copy of gadget. This may produce needless copying in the</span></div> |
| <div class="line"><a name="l00432"></a><span class="lineno"> 432</span>  <span class="comment">// pseudo-exact case below, but should simplify the code without</span></div> |
| <div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="comment">// needing to make the gadget a pointer</span></div> |
| <div class="line"><a name="l00434"></a><span class="lineno"> 434</span>  <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a> gcopy(gadget_, <span class="keyword">false</span>, n_);</div> |
| <div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  </div> |
| <div class="line"><a name="l00436"></a><span class="lineno"> 436</span>  <span class="comment">// At this point, we know that marked items are present in H. So:</span></div> |
| <div class="line"><a name="l00437"></a><span class="lineno"> 437</span>  <span class="comment">// 1. Result will necessarily be in estimation mode</span></div> |
| <div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  <span class="comment">// 2. Marked items currently in H need to be absorbed into reservoir (R)</span></div> |
| <div class="line"><a name="l00439"></a><span class="lineno"> 439</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_pseudo_exact = detect_and_handle_subcase_of_pseudo_exact(gcopy);</div> |
| <div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  <span class="keywordflow">if</span> (!is_pseudo_exact) {</div> |
| <div class="line"><a name="l00441"></a><span class="lineno"> 441</span>  <span class="comment">// continue with main logic</span></div> |
| <div class="line"><a name="l00442"></a><span class="lineno"> 442</span>  migrate_marked_items_by_decreasing_k(gcopy);</div> |
| <div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  }</div> |
| <div class="line"><a name="l00444"></a><span class="lineno"> 444</span>  <span class="comment">// sub-case was already detected and handled, so return the result</span></div> |
| <div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keywordflow">return</span> gcopy;</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> }</div> |
| <div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  </div> |
| <div class="line"><a name="l00455"></a><span class="lineno"> 455</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a> <a class="code" href="classdatasketches_1_1var__opt__union.html">var_opt_union<T, A>::simple_gadget_coercer</a>()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">if</span> (gadget_.num_marks_in_h_ != 0) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"simple gadget coercer only applies if no marks"</span>);</div> |
| <div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keywordflow">return</span> <a class="code" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>(gadget_, <span class="keyword">true</span>, n_);</div> |
| <div class="line"><a name="l00459"></a><span class="lineno"> 459</span> }</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="comment">// this is a condition checked in detect_and_handle_subcase_of_pseudo_exact()</span></div> |
| <div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00463"></a><span class="lineno"> 463</span> <span class="keywordtype">bool</span> var_opt_union<T, A>::there_exist_unmarked_h_items_lighter_than_target(<span class="keywordtype">double</span> threshold)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00464"></a><span class="lineno"> 464</span>  <span class="keywordflow">for</span> (uint32_t i = 0; i < gadget_.h_; ++i) {</div> |
| <div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  <span class="keywordflow">if</span> ((gadget_.weights_[i] < threshold) && !gadget_.marks_[i]) {</div> |
| <div class="line"><a name="l00466"></a><span class="lineno"> 466</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div> |
| <div class="line"><a name="l00467"></a><span class="lineno"> 467</span>  }</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">return</span> <span class="keyword">false</span>;</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>  </div> |
| <div class="line"><a name="l00472"></a><span class="lineno"> 472</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00473"></a><span class="lineno"> 473</span> <span class="keywordtype">bool</span> var_opt_union<T, A>::detect_and_handle_subcase_of_pseudo_exact(var_opt_sketch<T, A>& sk)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  <span class="comment">// gadget is seemingly exact</span></div> |
| <div class="line"><a name="l00475"></a><span class="lineno"> 475</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> condition1 = gadget_.r_ == 0;</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>  <span class="comment">// but there are marked items in H, so only _pseudo_ exact</span></div> |
| <div class="line"><a name="l00478"></a><span class="lineno"> 478</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> condition2 = gadget_.num_marks_in_h_ > 0;</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="comment">// if gadget is pseudo-exact and the number of marks equals outer_tau_denom, then we can deduce</span></div> |
| <div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  <span class="comment">// from the bookkeeping logic of resolve_tau() that all estimation mode input sketches must</span></div> |
| <div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <span class="comment">// have had the same tau, so we can throw all of the marked items into a common reservoir.</span></div> |
| <div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> condition3 = gadget_.num_marks_in_h_ == outer_tau_denom_;</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>  <span class="keywordflow">if</span> (!(condition1 && condition2 && condition3)) {</div> |
| <div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  </div> |
| <div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="comment">// explicitly enforce rule that items in H should not be lighter than the sketch's tau</span></div> |
| <div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> anti_condition4 = there_exist_unmarked_h_items_lighter_than_target(gadget_.get_tau());</div> |
| <div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keywordflow">if</span> (anti_condition4) {</div> |
| <div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  <span class="comment">// conditions 1 through 4 hold</span></div> |
| <div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  mark_moving_gadget_coercer(sk);</div> |
| <div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <span class="keywordflow">return</span> <span class="keyword">true</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>  }</div> |
| <div class="line"><a name="l00499"></a><span class="lineno"> 499</span> }</div> |
| <div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  </div> |
| <div class="line"><a name="l00509"></a><span class="lineno"> 509</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00510"></a><span class="lineno"> 510</span> <span class="keywordtype">void</span> var_opt_union<T, A>::mark_moving_gadget_coercer(var_opt_sketch<T, A>& sk)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  <span class="keyword">const</span> uint32_t result_k = gadget_.h_ + gadget_.r_;</div> |
| <div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  </div> |
| <div class="line"><a name="l00513"></a><span class="lineno"> 513</span>  uint32_t result_h = 0;</div> |
| <div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  uint32_t result_r = 0;</div> |
| <div class="line"><a name="l00515"></a><span class="lineno"> 515</span>  <span class="keywordtype">size_t</span> next_r_pos = result_k; <span class="comment">// = (result_k+1)-1, to fill R region from back to front</span></div> |
| <div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  </div> |
| <div class="line"><a name="l00517"></a><span class="lineno"> 517</span>  <span class="keywordtype">double</span>* wts = AllocDouble(allocator_).allocate(result_k + 1);</div> |
| <div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  T* data = A(allocator_).allocate(result_k + 1);</div> |
| <div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  </div> |
| <div class="line"><a name="l00520"></a><span class="lineno"> 520</span>  <span class="comment">// insert R region items, ignoring weights</span></div> |
| <div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  <span class="comment">// Currently (May 2017) this next block is unreachable; this coercer is used only in the</span></div> |
| <div class="line"><a name="l00522"></a><span class="lineno"> 522</span>  <span class="comment">// pseudo-exact case in which case there are no items natively in R, only marked items in H</span></div> |
| <div class="line"><a name="l00523"></a><span class="lineno"> 523</span>  <span class="comment">// that will be moved into R as part of the coercion process.</span></div> |
| <div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  <span class="comment">// Addedndum (Jan 2020): Cleanup at end of method assumes R count is 0</span></div> |
| <div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> final_idx = gadget_.get_num_samples();</div> |
| <div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> idx = gadget_.h_ + 1; idx <= final_idx; ++idx) {</div> |
| <div class="line"><a name="l00527"></a><span class="lineno"> 527</span>  <span class="keyword">new</span> (&data[next_r_pos]) T(gadget_.data_[idx]);</div> |
| <div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  wts[next_r_pos] = gadget_.weights_[idx];</div> |
| <div class="line"><a name="l00529"></a><span class="lineno"> 529</span>  ++result_r;</div> |
| <div class="line"><a name="l00530"></a><span class="lineno"> 530</span>  --next_r_pos;</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="keywordtype">double</span> transferred_weight = 0;</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="comment">// insert H region items</span></div> |
| <div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> idx = 0; idx < gadget_.h_; ++idx) {</div> |
| <div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keywordflow">if</span> (gadget_.marks_[idx]) {</div> |
| <div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="keyword">new</span> (&data[next_r_pos]) T(gadget_.data_[idx]);</div> |
| <div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  wts[next_r_pos] = -1.0;</div> |
| <div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  transferred_weight += gadget_.weights_[idx];</div> |
| <div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  ++result_r;</div> |
| <div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  --next_r_pos;</div> |
| <div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  <span class="keyword">new</span> (&data[result_h]) T(gadget_.data_[idx]);</div> |
| <div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  wts[result_h] = gadget_.weights_[idx];</div> |
| <div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  ++result_h;</div> |
| <div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  }</div> |
| <div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  }</div> |
| <div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  </div> |
| <div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordflow">if</span> (result_h + result_r != result_k) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"H + R counts must equal k"</span>);</div> |
| <div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordflow">if</span> (std::abs(transferred_weight - outer_tau_numer_) > 1e-10) {</div> |
| <div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"unexpected mismatch in transferred weight"</span>);</div> |
| <div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  }</div> |
| <div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  </div> |
| <div class="line"><a name="l00555"></a><span class="lineno"> 555</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> result_r_weight = gadget_.total_wt_r_ + transferred_weight;</div> |
| <div class="line"><a name="l00556"></a><span class="lineno"> 556</span>  <span class="keyword">const</span> uint64_t result_n = n_;</div> |
| <div class="line"><a name="l00557"></a><span class="lineno"> 557</span>  </div> |
| <div class="line"><a name="l00558"></a><span class="lineno"> 558</span>  <span class="comment">// explicitly set weight value for the gap</span></div> |
| <div class="line"><a name="l00559"></a><span class="lineno"> 559</span>  wts[result_h] = -1.0;</div> |
| <div class="line"><a name="l00560"></a><span class="lineno"> 560</span>  </div> |
| <div class="line"><a name="l00561"></a><span class="lineno"> 561</span>  <span class="comment">// clean up arrays in input sketch, replace with new values</span></div> |
| <div class="line"><a name="l00562"></a><span class="lineno"> 562</span>  AllocBool(allocator_).deallocate(sk.marks_, sk.curr_items_alloc_);</div> |
| <div class="line"><a name="l00563"></a><span class="lineno"> 563</span>  AllocDouble(allocator_).deallocate(sk.weights_, sk.curr_items_alloc_);</div> |
| <div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="keywordflow">for</span> (<span class="keywordtype">size_t</span> i = 0; i < result_k; ++i) { sk.data_[i].~T(); } <span class="comment">// assumes everything in H region, no gap</span></div> |
| <div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  A(allocator_).deallocate(sk.data_, sk.curr_items_alloc_);</div> |
| <div class="line"><a name="l00566"></a><span class="lineno"> 566</span>  </div> |
| <div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  sk.data_ = data;</div> |
| <div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  sk.weights_ = wts;</div> |
| <div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  sk.marks_ = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  sk.num_marks_in_h_ = 0;</div> |
| <div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  sk.curr_items_alloc_ = result_k + 1;</div> |
| <div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  sk.k_ = result_k;</div> |
| <div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  sk.n_ = result_n;</div> |
| <div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  sk.h_ = result_h;</div> |
| <div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  sk.r_ = result_r;</div> |
| <div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  sk.total_wt_r_ = result_r_weight;</div> |
| <div class="line"><a name="l00577"></a><span class="lineno"> 577</span> }</div> |
| <div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  </div> |
| <div class="line"><a name="l00579"></a><span class="lineno"> 579</span> <span class="comment">// this is basically a continuation of get_result(), but modifying the input gadget copy</span></div> |
| <div class="line"><a name="l00580"></a><span class="lineno"> 580</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00581"></a><span class="lineno"> 581</span> <span class="keywordtype">void</span> var_opt_union<T, A>::migrate_marked_items_by_decreasing_k(var_opt_sketch<T, A>& gcopy)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keyword">const</span> uint32_t r_count = gcopy.r_;</div> |
| <div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keyword">const</span> uint32_t h_count = gcopy.h_;</div> |
| <div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="keyword">const</span> uint32_t k = gcopy.k_;</div> |
| <div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  </div> |
| <div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="comment">// should be ensured by caller</span></div> |
| <div class="line"><a name="l00587"></a><span class="lineno"> 587</span>  <span class="keywordflow">if</span> (gcopy.num_marks_in_h_ == 0) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"unexpectedly found no marked items to migrate"</span>);</div> |
| <div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  <span class="comment">// either full (of samples), in pseudo-exact mode, or both</span></div> |
| <div class="line"><a name="l00589"></a><span class="lineno"> 589</span>  <span class="keywordflow">if</span> ((r_count != 0) && ((h_count + r_count) != k)) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"invalid gadget state"</span>);</div> |
| <div class="line"><a name="l00590"></a><span class="lineno"> 590</span>  </div> |
| <div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  <span class="comment">// if non-full and pseudo-exact, change k so that gcopy is full</span></div> |
| <div class="line"><a name="l00592"></a><span class="lineno"> 592</span>  <span class="keywordflow">if</span> ((r_count == 0) && (h_count < k)) {</div> |
| <div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  gcopy.k_ = h_count; <span class="comment">// may leve extra space allocated but that's ok</span></div> |
| <div class="line"><a name="l00594"></a><span class="lineno"> 594</span>  }</div> |
| <div class="line"><a name="l00595"></a><span class="lineno"> 595</span>  </div> |
| <div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="comment">// Now k equals the number of samples, so reducing k will increase tau.</span></div> |
| <div class="line"><a name="l00597"></a><span class="lineno"> 597</span>  <span class="comment">// Also, we know that there are at least 2 samples because 0 or 1 would have been handled</span></div> |
| <div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  <span class="comment">// by the earlier logic in get_result()</span></div> |
| <div class="line"><a name="l00599"></a><span class="lineno"> 599</span>  gcopy.decrease_k_by_1();</div> |
| <div class="line"><a name="l00600"></a><span class="lineno"> 600</span>  </div> |
| <div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="comment">// gcopy is now in estimation mode, just like the final result must be (due to marked items)</span></div> |
| <div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  <span class="keywordflow">if</span> (gcopy.get_tau() == 0.0) <span class="keywordflow">throw</span> std::logic_error(<span class="stringliteral">"gadget must be in sampling mode"</span>);</div> |
| <div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  </div> |
| <div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  <span class="comment">// keep reducing k until all marked items have been absorbed into the reservoir</span></div> |
| <div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordflow">while</span> (gcopy.num_marks_in_h_ > 0) {</div> |
| <div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="comment">// gcopy.k_ >= 2 because h_ and r_ are both at least 1, but checked in next method anyway</span></div> |
| <div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  gcopy.decrease_k_by_1();</div> |
| <div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  }</div> |
| <div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  </div> |
| <div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  gcopy.strip_marks();</div> |
| <div class="line"><a name="l00611"></a><span class="lineno"> 611</span> }</div> |
| <div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  </div> |
| <div class="line"><a name="l00613"></a><span class="lineno"> 613</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00614"></a><span class="lineno"> 614</span> <span class="keywordtype">void</span> var_opt_union<T, A>::check_preamble_longs(uint8_t preamble_longs, uint8_t flags) {</div> |
| <div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  <span class="keywordtype">bool</span> is_empty(flags & EMPTY_FLAG_MASK);</div> |
| <div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  </div> |
| <div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordflow">if</span> (is_empty) {</div> |
| <div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  <span class="keywordflow">if</span> (preamble_longs != PREAMBLE_LONGS_EMPTY) {</div> |
| <div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: Preamble longs must be "</span></div> |
| <div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  + std::to_string(PREAMBLE_LONGS_EMPTY) + <span class="stringliteral">" for an empty sketch. Found: "</span></div> |
| <div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  + std::to_string(preamble_longs));</div> |
| <div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  }</div> |
| <div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  <span class="keywordflow">if</span> (preamble_longs != PREAMBLE_LONGS_NON_EMPTY) {</div> |
| <div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: Preamble longs must be "</span></div> |
| <div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  + std::to_string(PREAMBLE_LONGS_NON_EMPTY)</div> |
| <div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  + <span class="stringliteral">" for a non-empty sketch. Found: "</span> + std::to_string(preamble_longs));</div> |
| <div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  }</div> |
| <div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  }</div> |
| <div class="line"><a name="l00630"></a><span class="lineno"> 630</span> }</div> |
| <div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  </div> |
| <div class="line"><a name="l00632"></a><span class="lineno"> 632</span> <span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00633"></a><span class="lineno"> 633</span> <span class="keywordtype">void</span> var_opt_union<T, A>::check_family_and_serialization_version(uint8_t family_id, uint8_t ser_ver) {</div> |
| <div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  <span class="keywordflow">if</span> (family_id == FAMILY_ID) {</div> |
| <div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  <span class="keywordflow">if</span> (ser_ver != SER_VER) {</div> |
| <div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: VarOpt Union serialization version must be "</span></div> |
| <div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  + std::to_string(SER_VER) + <span class="stringliteral">". Found: "</span> + std::to_string(ser_ver));</div> |
| <div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  }</div> |
| <div class="line"><a name="l00639"></a><span class="lineno"> 639</span>  <span class="keywordflow">return</span>;</div> |
| <div class="line"><a name="l00640"></a><span class="lineno"> 640</span>  }</div> |
| <div class="line"><a name="l00641"></a><span class="lineno"> 641</span>  <span class="comment">// TODO: extend to handle reservoir sampling</span></div> |
| <div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  </div> |
| <div class="line"><a name="l00643"></a><span class="lineno"> 643</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Possible corruption: VarOpt Union family id must be "</span></div> |
| <div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  + std::to_string(FAMILY_ID) + <span class="stringliteral">". Found: "</span> + std::to_string(family_id));</div> |
| <div class="line"><a name="l00645"></a><span class="lineno"> 645</span> }</div> |
| <div class="line"><a name="l00646"></a><span class="lineno"> 646</span>  </div> |
| <div class="line"><a name="l00647"></a><span class="lineno"> 647</span> } <span class="comment">// namespace datasketches</span></div> |
| <div class="line"><a name="l00648"></a><span class="lineno"> 648</span>  </div> |
| <div class="line"><a name="l00649"></a><span class="lineno"> 649</span> <span class="preprocessor">#endif </span><span class="comment">// _VAR_OPT_UNION_IMPL_HPP_</span></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html">datasketches::var_opt_sketch< T, A ></a></div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_aea8f1c4a6d0189de0db5b5cd085c39b1"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#aea8f1c4a6d0189de0db5b5cd085c39b1">datasketches::var_opt_sketch< T, A >::deserialize</a></div><div class="ttdeci">static var_opt_sketch deserialize(std::istream &is, const SerDe &sd=SerDe(), const A &allocator=A())</div><div class="ttdoc">This method deserializes a sketch from a given stream.</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__union_html"><div class="ttname"><a href="classdatasketches_1_1var__opt__union.html">datasketches::var_opt_union</a></div><div class="ttdoc">Provides a unioning operation over var_opt_sketch objects.</div><div class="ttdef"><b>Definition:</b> var_opt_union.hpp:52</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__union_html_a8762fed25b3024f07989976344dd0afb"><div class="ttname"><a href="classdatasketches_1_1var__opt__union.html#a8762fed25b3024f07989976344dd0afb">datasketches::var_opt_union::get_serialized_size_bytes</a></div><div class="ttdeci">size_t get_serialized_size_bytes(const SerDe &sd=SerDe()) const</div><div class="ttdoc">Computes size needed to serialize the current state of the union.</div><div class="ttdef"><b>Definition:</b> var_opt_union_impl.hpp:218</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__union_html_ad20897c5c8bd47f5d4005989bead0e55"><div class="ttname"><a href="classdatasketches_1_1var__opt__union.html#ad20897c5c8bd47f5d4005989bead0e55">datasketches::var_opt_union::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdoc">Resets the union to its default, empty state.</div><div class="ttdef"><b>Definition:</b> var_opt_union_impl.hpp:301</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__union_html_aed372241c10ffd041bee85602edb199a"><div class="ttname"><a href="classdatasketches_1_1var__opt__union.html#aed372241c10ffd041bee85602edb199a">datasketches::var_opt_union::to_string</a></div><div class="ttdeci">string< A > to_string() const</div><div class="ttdoc">Prints a summary of the union as a string.</div><div class="ttdef"><b>Definition:</b> var_opt_union_impl.hpp:309</div></div> |
| <div class="ttc" id="anamespacedatasketches_1_1theta__constants_html_a02799eee5e87428b1c72e6c4c282d68e"><div class="ttname"><a href="namespacedatasketches_1_1theta__constants.html#a02799eee5e87428b1c72e6c4c282d68e">datasketches::theta_constants::DEFAULT_RESIZE_FACTOR</a></div><div class="ttdeci">const resize_factor DEFAULT_RESIZE_FACTOR</div><div class="ttdoc">default resize factor</div><div class="ttdef"><b>Definition:</b> theta_constants.hpp:33</div></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> |
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