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| <div class="headertitle"><div class="title">var_opt_sketch.hpp</div></div> |
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| <div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">/*</span></div> |
| <div class="line"><a id="l00002" 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 id="l00003" 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 id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment"> * distributed with this work for additional information</span></div> |
| <div class="line"><a id="l00005" 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 id="l00006" 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 id="l00007" 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 id="l00008" 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 id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00010" 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 id="l00011" name="l00011"></a><span class="lineno"> 11</span><span class="comment"> *</span></div> |
| <div class="line"><a id="l00012" 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 id="l00013" 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 id="l00014" 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 id="l00015" 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 id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="comment"> * specific language governing permissions and limitations</span></div> |
| <div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="comment"> * under the License.</span></div> |
| <div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="comment"> */</span></div> |
| <div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div> |
| <div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#ifndef _VAR_OPT_SKETCH_HPP_</span></div> |
| <div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#define _VAR_OPT_SKETCH_HPP_</span></div> |
| <div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span> </div> |
| <div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include "serde.hpp"</span></div> |
| <div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include "common_defs.hpp"</span></div> |
| <div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span> </div> |
| <div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include <iterator></span></div> |
| <div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include <vector></span></div> |
| <div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div> |
| <div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespacedatasketches.html">datasketches</a> {</div> |
| <div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div> |
| <div class="line"><a id="l00031" name="l00031"></a><span class="lineno"> 31</span><span class="keyword">template</span><<span class="keyword">typename</span> A> <span class="keyword">using </span>AllocU8 = <span class="keyword">typename</span> std::allocator_traits<A>::template rebind_alloc<uint8_t>;</div> |
| <div class="line"><a id="l00032" name="l00032"></a><span class="lineno"> 32</span><span class="keyword">template</span><<span class="keyword">typename</span> A> <span class="keyword">using </span>vector_u8 = std::vector<uint8_t, AllocU8<A>>;</div> |
| <div class="line"><a id="l00033" name="l00033"></a><span class="lineno"> 33</span> </div> |
| <div class="line"><a id="l00034" name="l00034"></a><span class="lineno"> 34</span><span class="comment">/*</span></div> |
| <div class="line"><a id="l00035" name="l00035"></a><span class="lineno"> 35</span><span class="comment"> * A struct to hold the result of subset sum queries</span></div> |
| <div class="line"><a id="l00036" name="l00036"></a><span class="lineno"> 36</span><span class="comment"> */</span></div> |
| <div class="line"><a id="l00037" name="l00037"></a><span class="lineno"> 37</span><span class="keyword">struct </span>subset_summary {</div> |
| <div class="line"><a id="l00038" name="l00038"></a><span class="lineno"> 38</span> <span class="keywordtype">double</span> lower_bound;</div> |
| <div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> <span class="keywordtype">double</span> estimate;</div> |
| <div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span> <span class="keywordtype">double</span> upper_bound;</div> |
| <div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> <span class="keywordtype">double</span> total_sketch_weight;</div> |
| <div class="line"><a id="l00042" name="l00042"></a><span class="lineno"> 42</span>};</div> |
| <div class="line"><a id="l00043" name="l00043"></a><span class="lineno"> 43</span> </div> |
| <div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span><span class="keyword">template</span> <<span class="keyword">typename</span> T, <span class="keyword">typename</span> A> <span class="keyword">class </span>var_opt_union; <span class="comment">// forward declaration</span></div> |
| <div class="line"><a id="l00045" name="l00045"></a><span class="lineno"> 45</span> </div> |
| <div class="foldopen" id="foldopen00047" data-start="{" data-end="}"> |
| <div class="line"><a id="l00047" name="l00047"></a><span class="lineno"><a class="line" href="namespacedatasketches_1_1var__opt__constants.html"> 47</a></span><span class="keyword">namespace </span>var_opt_constants {</div> |
| <div class="line"><a id="l00049" name="l00049"></a><span class="lineno"><a class="line" href="namespacedatasketches_1_1var__opt__constants.html#a02799eee5e87428b1c72e6c4c282d68e"> 49</a></span> <span class="keyword">const</span> resize_factor <a class="code hl_variable" href="namespacedatasketches_1_1var__opt__constants.html#a02799eee5e87428b1c72e6c4c282d68e">DEFAULT_RESIZE_FACTOR</a> = resize_factor::X8;</div> |
| <div class="line"><a id="l00051" name="l00051"></a><span class="lineno"><a class="line" href="namespacedatasketches_1_1var__opt__constants.html#aef0073265694689f2a7281205c133523"> 51</a></span> <span class="keyword">const</span> uint32_t <a class="code hl_variable" href="namespacedatasketches_1_1var__opt__constants.html#aef0073265694689f2a7281205c133523">MAX_K</a> = ((uint32_t) 1 << 31) - 2;</div> |
| <div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div> |
| </div> |
| <div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div> |
| <div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span><span class="keyword">template</span><</div> |
| <div class="line"><a id="l00064" name="l00064"></a><span class="lineno"> 64</span> <span class="keyword">typename</span> T,</div> |
| <div class="line"><a id="l00065" name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">typename</span> A = std::allocator<T></div> |
| <div class="line"><a id="l00066" name="l00066"></a><span class="lineno"> 66</span>></div> |
| <div class="foldopen" id="foldopen00067" data-start="{" data-end="};"> |
| <div class="line"><a id="l00067" name="l00067"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html"> 67</a></span><span class="keyword">class </span><a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a> {</div> |
| <div class="line"><a id="l00068" name="l00068"></a><span class="lineno"> 68</span> </div> |
| <div class="line"><a id="l00069" name="l00069"></a><span class="lineno"> 69</span> <span class="keyword">public</span>:</div> |
| <div class="line"><a id="l00070" name="l00070"></a><span class="lineno"> 70</span> <span class="keyword">static</span> <span class="keyword">const</span> resize_factor DEFAULT_RESIZE_FACTOR = <a class="code hl_variable" href="namespacedatasketches_1_1var__opt__constants.html#a02799eee5e87428b1c72e6c4c282d68e">var_opt_constants::DEFAULT_RESIZE_FACTOR</a>;</div> |
| <div class="line"><a id="l00071" name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">static</span> <span class="keyword">const</span> uint32_t MAX_K = <a class="code hl_variable" href="namespacedatasketches_1_1var__opt__constants.html#aef0073265694689f2a7281205c133523">var_opt_constants::MAX_K</a>;</div> |
| <div class="line"><a id="l00072" name="l00072"></a><span class="lineno"> 72</span> </div> |
| <div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> <span class="keyword">explicit</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(uint32_t k,</div> |
| <div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> resize_factor rf = <a class="code hl_variable" href="namespacedatasketches_1_1var__opt__constants.html#a02799eee5e87428b1c72e6c4c282d68e">var_opt_constants::DEFAULT_RESIZE_FACTOR</a>,</div> |
| <div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> <span class="keyword">const</span> A& allocator = A());</div> |
| <div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span> </div> |
| <div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(<span class="keyword">const</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& other);</div> |
| <div class="line"><a id="l00088" name="l00088"></a><span class="lineno"> 88</span> </div> |
| <div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(<a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>&& other) <span class="keyword">noexcept</span>;</div> |
| <div class="line"><a id="l00094" name="l00094"></a><span class="lineno"> 94</span> </div> |
| <div class="line"><a id="l00095" name="l00095"></a><span class="lineno"> 95</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">~var_opt_sketch</a>();</div> |
| <div class="line"><a id="l00096" name="l00096"></a><span class="lineno"> 96</span> </div> |
| <div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a247dd627502e887562ae763adfe863ff">operator=</a>(<span class="keyword">const</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& other);</div> |
| <div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div> |
| <div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a247dd627502e887562ae763adfe863ff">operator=</a>(<a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>&& other);</div> |
| <div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> </div> |
| <div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f">update</a>(<span class="keyword">const</span> T& item, <span class="keywordtype">double</span> weight = 1.0);</div> |
| <div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div> |
| <div class="line"><a id="l00125" name="l00125"></a><span class="lineno"> 125</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f">update</a>(T&& item, <span class="keywordtype">double</span> weight = 1.0);</div> |
| <div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span> </div> |
| <div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> <span class="keyword">inline</span> uint32_t <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#af561f5cd76ff61773713c627bc53b0a2">get_k</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00132" name="l00132"></a><span class="lineno"> 132</span> </div> |
| <div class="line"><a id="l00137" name="l00137"></a><span class="lineno"> 137</span> <span class="keyword">inline</span> uint64_t <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#af857be9469a7565252626f27e1f9d74d">get_n</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span> </div> |
| <div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keyword">inline</span> uint32_t <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#ac481918ec96d79b27813d32bcc2a247d">get_num_samples</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> </div> |
| <div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> <span class="keyword">template</span><<span class="keyword">typename</span> P></div> |
| <div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> subset_summary <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a71f1302dd93f895508f65893f96796fa">estimate_subset_sum</a>(P predicate) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div> |
| <div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a5a2b7a58dc85678d08752945ff655362">is_empty</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> </div> |
| <div class="line"><a id="l00165" name="l00165"></a><span class="lineno"> 165</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#ad20897c5c8bd47f5d4005989bead0e55">reset</a>();</div> |
| <div class="line"><a id="l00166" name="l00166"></a><span class="lineno"> 166</span> </div> |
| <div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span> <span class="keyword">template</span><<span class="keyword">typename</span> TT = T, <span class="keyword">typename</span> SerDe = serde<T>, <span class="keyword">typename</span> std::enable_if<std::is_arithmetic<TT>::value, <span class="keywordtype">int</span>>::type = 0></div> |
| <div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#ad9a5259d93d148b5c2050d68e7788716">get_serialized_size_bytes</a>(<span class="keyword">const</span> SerDe& sd = SerDe()) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> </div> |
| <div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span> <span class="keyword">template</span><<span class="keyword">typename</span> TT = T, <span class="keyword">typename</span> SerDe = serde<T>, <span class="keyword">typename</span> std::enable_if<!std::is_arithmetic<TT>::value, <span class="keywordtype">int</span>>::type = 0></div> |
| <div class="line"><a id="l00183" name="l00183"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ad9a5259d93d148b5c2050d68e7788716"> 183</a></span> <span class="keyword">inline</span> <span class="keywordtype">size_t</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#ad9a5259d93d148b5c2050d68e7788716">get_serialized_size_bytes</a>(<span class="keyword">const</span> SerDe& sd = SerDe()) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span> </div> |
| <div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="comment">// This is a convenience alias for users</span></div> |
| <div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="comment">// The type returned by the following serialize method</span></div> |
| <div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> <span class="keyword">using </span>vector_bytes = vector_u8<A>;</div> |
| <div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> </div> |
| <div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe = serde<T>></div> |
| <div class="line"><a id="l00198" name="l00198"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#a1d0c269c23926e93b1c7a9c00e86af97"> 198</a></span> vector_bytes <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a1d0c269c23926e93b1c7a9c00e86af97">serialize</a>(<span class="keywordtype">unsigned</span> header_size_bytes = 0, <span class="keyword">const</span> SerDe& sd = SerDe()) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00199" name="l00199"></a><span class="lineno"> 199</span> </div> |
| <div class="line"><a id="l00205" name="l00205"></a><span class="lineno"> 205</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe = serde<T>></div> |
| <div class="line"><a id="l00206" name="l00206"></a><span class="lineno"> 206</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a1d0c269c23926e93b1c7a9c00e86af97">serialize</a>(std::ostream& os, <span class="keyword">const</span> SerDe& sd = SerDe()) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00207" name="l00207"></a><span class="lineno"> 207</span> </div> |
| <div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe = serde<T>></div> |
| <div class="line"><a id="l00216" name="l00216"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#aea8f1c4a6d0189de0db5b5cd085c39b1"> 216</a></span> <span class="keyword">static</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#aea8f1c4a6d0189de0db5b5cd085c39b1">deserialize</a>(std::istream& is, <span class="keyword">const</span> SerDe& sd = SerDe(), <span class="keyword">const</span> A& allocator = A());</div> |
| <div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> </div> |
| <div class="line"><a id="l00226" name="l00226"></a><span class="lineno"> 226</span> <span class="keyword">template</span><<span class="keyword">typename</span> SerDe = serde<T>></div> |
| <div class="line"><a id="l00227" name="l00227"></a><span class="lineno"><a class="line" href="classdatasketches_1_1var__opt__sketch.html#ab0856fc62bc5f6b154feae4a09e7d422"> 227</a></span> <span class="keyword">static</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#ab0856fc62bc5f6b154feae4a09e7d422">deserialize</a>(<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 = SerDe(), <span class="keyword">const</span> A& allocator = A());</div> |
| <div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> </div> |
| <div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> string<A> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#aed372241c10ffd041bee85602edb199a">to_string</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> </div> |
| <div class="line"><a id="l00243" name="l00243"></a><span class="lineno"> 243</span> string<A> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a0fa52dd153f1e3cac57d4742e2fef6fc">items_to_string</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> </div> |
| <div class="line"><a id="l00245" name="l00245"></a><span class="lineno"> 245</span> <span class="keyword">class </span>const_iterator;</div> |
| <div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span> </div> |
| <div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> const_iterator <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a0faac62cb9f27b09afc849def518f5cc">begin</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> </div> |
| <div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> const_iterator <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#ae9e1e5356b5d10a177fa50f7bdfdfd96">end</a>() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> </div> |
| <div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> <span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> std::allocator_traits<A>::template rebind_alloc<double> AllocDouble;</div> |
| <div class="line"><a id="l00264" name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">typedef</span> <span class="keyword">typename</span> std::allocator_traits<A>::template rebind_alloc<bool> AllocBool;</div> |
| <div class="line"><a id="l00265" name="l00265"></a><span class="lineno"> 265</span> </div> |
| <div class="line"><a id="l00266" name="l00266"></a><span class="lineno"> 266</span> <span class="keyword">static</span> <span class="keyword">const</span> uint32_t MIN_LG_ARR_ITEMS = 3;</div> |
| <div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> </div> |
| <div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t PREAMBLE_LONGS_EMPTY = 1;</div> |
| <div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t PREAMBLE_LONGS_WARMUP = 3;</div> |
| <div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t PREAMBLE_LONGS_FULL = 4;</div> |
| <div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t SER_VER = 2;</div> |
| <div class="line"><a id="l00272" name="l00272"></a><span class="lineno"> 272</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t FAMILY_ID = 13;</div> |
| <div class="line"><a id="l00273" name="l00273"></a><span class="lineno"> 273</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t EMPTY_FLAG_MASK = 4;</div> |
| <div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> <span class="keyword">static</span> <span class="keyword">const</span> uint8_t GADGET_FLAG_MASK = 128;</div> |
| <div class="line"><a id="l00275" name="l00275"></a><span class="lineno"> 275</span> </div> |
| <div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> <span class="comment">// Number of standard deviations to use for subset sum error bounds</span></div> |
| <div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> <span class="keyword">constexpr</span> <span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> DEFAULT_KAPPA = 2.0;</div> |
| <div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> </div> |
| <div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> <span class="comment">// TODO: should probably rearrange a bit to minimize gaps once aligned</span></div> |
| <div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> uint32_t k_; <span class="comment">// max size of sketch, in items</span></div> |
| <div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> </div> |
| <div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> uint32_t h_; <span class="comment">// number of items in heap</span></div> |
| <div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> uint32_t m_; <span class="comment">// number of items in middle region</span></div> |
| <div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> uint32_t r_; <span class="comment">// number of items in reservoir-like region</span></div> |
| <div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> </div> |
| <div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> uint64_t n_; <span class="comment">// total number of items processed by sketch</span></div> |
| <div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> <span class="keywordtype">double</span> total_wt_r_; <span class="comment">// total weight of items in reservoir-like area</span></div> |
| <div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> </div> |
| <div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> resize_factor rf_; <span class="comment">// resize factor</span></div> |
| <div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> </div> |
| <div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> uint32_t curr_items_alloc_; <span class="comment">// currently allocated array size</span></div> |
| <div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> <span class="keywordtype">bool</span> filled_data_; <span class="comment">// true if we've explicitly set all entries in data_</span></div> |
| <div class="line"><a id="l00293" name="l00293"></a><span class="lineno"> 293</span> </div> |
| <div class="line"><a id="l00294" name="l00294"></a><span class="lineno"> 294</span> A allocator_;</div> |
| <div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> T* data_; <span class="comment">// stored sampled items</span></div> |
| <div class="line"><a id="l00296" name="l00296"></a><span class="lineno"> 296</span> <span class="keywordtype">double</span>* weights_; <span class="comment">// weights for sampled items</span></div> |
| <div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span> </div> |
| <div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="comment">// The next two fields are hidden from the user because they are part of the state of the</span></div> |
| <div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> <span class="comment">// unioning algorithm, NOT part of a varopt sketch, or even of a varopt "gadget" (our name for</span></div> |
| <div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> <span class="comment">// the potentially invalid sketch that is maintained by the unioning algorithm). It would make</span></div> |
| <div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> <span class="comment">// more sense logically for these fields to be declared in the unioning object (whose entire</span></div> |
| <div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> <span class="comment">// purpose is storing the state of the unioning algorithm) but for reasons of programming</span></div> |
| <div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> <span class="comment">// convenience we are currently declaring them here. However, that could change in the future.</span></div> |
| <div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> </div> |
| <div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> <span class="comment">// Following int is:</span></div> |
| <div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> <span class="comment">// 1. Zero (for a varopt sketch)</span></div> |
| <div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> <span class="comment">// 2. Count of marked items in H region, if part of a unioning algo's gadget</span></div> |
| <div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> uint32_t num_marks_in_h_;</div> |
| <div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> </div> |
| <div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> <span class="comment">// The following array is absent in a varopt sketch, and notionally present in a gadget</span></div> |
| <div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> <span class="comment">// (although it really belongs in the unioning object). If the array were to be made explicit,</span></div> |
| <div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> <span class="comment">// some additional coding would need to be done to ensure that all of the necessary data motion</span></div> |
| <div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> <span class="comment">// occurs and is properly tracked.</span></div> |
| <div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> <span class="keywordtype">bool</span>* marks_;</div> |
| <div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> </div> |
| <div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> <span class="comment">// used during deserialization to avoid memory leaks upon errors</span></div> |
| <div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> <span class="keyword">class </span>items_deleter;</div> |
| <div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> <span class="keyword">class </span>weights_deleter;</div> |
| <div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> <span class="keyword">class </span>marks_deleter;</div> |
| <div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> </div> |
| <div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(uint32_t k, resize_factor rf, <span class="keywordtype">bool</span> is_gadget, <span class="keyword">const</span> A& allocator);</div> |
| <div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(uint32_t k, uint32_t h, uint32_t m, uint32_t r, uint64_t n, <span class="keywordtype">double</span> total_wt_r, resize_factor rf,</div> |
| <div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> uint32_t curr_items_alloc, <span class="keywordtype">bool</span> filled_data, std::unique_ptr<T, items_deleter> items,</div> |
| <div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> std::unique_ptr<double, weights_deleter> weights, uint32_t num_marks_in_h,</div> |
| <div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> std::unique_ptr<bool, marks_deleter> marks, <span class="keyword">const</span> A& allocator);</div> |
| <div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> </div> |
| <div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code hl_class" href="classdatasketches_1_1var__opt__union.html">var_opt_union</a><T, A>;</div> |
| <div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>(<span class="keyword">const</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a>& other, <span class="keywordtype">bool</span> as_sketch, uint64_t adjusted_n);</div> |
| <div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> </div> |
| <div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span> string<A> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a0fa52dd153f1e3cac57d4742e2fef6fc">items_to_string</a>(<span class="keywordtype">bool</span> print_gap) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> </div> |
| <div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> <span class="comment">// internal-use-only update</span></div> |
| <div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> <a class="code hl_function" href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f">update</a>(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark);</div> |
| <div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> </div> |
| <div class="line"><a id="l00336" name="l00336"></a><span class="lineno"> 336</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a id="l00337" name="l00337"></a><span class="lineno"> 337</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> update_warmup_phase(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark);</div> |
| <div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> </div> |
| <div class="line"><a id="l00339" name="l00339"></a><span class="lineno"> 339</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> update_light(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark);</div> |
| <div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> </div> |
| <div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> update_heavy_r_eq1(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark);</div> |
| <div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> </div> |
| <div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> update_heavy_general(O&& item, <span class="keywordtype">double</span> weight, <span class="keywordtype">bool</span> mark);</div> |
| <div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span> </div> |
| <div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> get_tau() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> peek_min() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> <span class="keyword">inline</span> <span class="keywordtype">bool</span> is_marked(uint32_t idx) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> </div> |
| <div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> <span class="keyword">inline</span> uint32_t pick_random_slot_in_r() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> <span class="keyword">inline</span> uint32_t choose_delete_slot(<span class="keywordtype">double</span> wt_cand, uint32_t num_cand) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> <span class="keyword">inline</span> uint32_t choose_weighted_delete_slot(<span class="keywordtype">double</span> wt_cand, uint32_t num_cand) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> </div> |
| <div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> <span class="keyword">template</span><<span class="keyword">typename</span> O></div> |
| <div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> push(O&& item, <span class="keywordtype">double</span> wt, <span class="keywordtype">bool</span> mark);</div> |
| <div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> transition_from_warmup();</div> |
| <div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> convert_to_heap();</div> |
| <div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> restore_towards_leaves(uint32_t slot_in);</div> |
| <div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> restore_towards_root(uint32_t slot_in);</div> |
| <div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> pop_min_to_m_region();</div> |
| <div class="line"><a id="l00363" name="l00363"></a><span class="lineno"> 363</span> <span class="keywordtype">void</span> grow_candidate_set(<span class="keywordtype">double</span> wt_cands, uint32_t num_cands); </div> |
| <div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> <span class="keywordtype">void</span> decrease_k_by_1();</div> |
| <div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> <span class="keywordtype">void</span> strip_marks();</div> |
| <div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> <span class="keywordtype">void</span> force_set_k(uint32_t k); <span class="comment">// used to resolve union gadget into sketch</span></div> |
| <div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> <span class="keywordtype">void</span> downsample_candidate_set(<span class="keywordtype">double</span> wt_cands, uint32_t num_cands);</div> |
| <div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> <span class="keyword">inline</span> <span class="keywordtype">void</span> swap_values(uint32_t src, uint32_t dst);</div> |
| <div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> <span class="keywordtype">void</span> grow_data_arrays();</div> |
| <div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> <span class="keywordtype">void</span> allocate_data_arrays(uint32_t tgt_size, <span class="keywordtype">bool</span> use_marks);</div> |
| <div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> </div> |
| <div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span> <span class="comment">// validation</span></div> |
| <div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> <span class="keyword">static</span> <span class="keywordtype">void</span> check_preamble_longs(uint8_t preamble_longs, uint8_t flags);</div> |
| <div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> <span class="keyword">static</span> <span class="keywordtype">void</span> check_family_and_serialization_version(uint8_t family_id, uint8_t ser_ver);</div> |
| <div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> <span class="keyword">static</span> uint32_t validate_and_get_target_size(uint32_t preamble_longs, uint32_t k, uint64_t n,</div> |
| <div class="line"><a id="l00376" name="l00376"></a><span class="lineno"> 376</span> uint32_t h, uint32_t r, resize_factor rf);</div> |
| <div class="line"><a id="l00377" name="l00377"></a><span class="lineno"> 377</span> </div> |
| <div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span> <span class="comment">// things to move to common and be shared among sketches</span></div> |
| <div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> <span class="keyword">static</span> uint32_t get_adjusted_size(uint32_t max_size, uint32_t resize_target);</div> |
| <div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> <span class="keyword">static</span> uint32_t starting_sub_multiple(uint32_t lg_target, uint32_t lg_rf, uint32_t lg_min);</div> |
| <div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> pseudo_hypergeometric_ub_on_p(uint64_t n, uint32_t k, <span class="keywordtype">double</span> sampling_rate);</div> |
| <div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> pseudo_hypergeometric_lb_on_p(uint64_t n, uint32_t k, <span class="keywordtype">double</span> sampling_rate);</div> |
| <div class="line"><a id="l00383" name="l00383"></a><span class="lineno"> 383</span> <span class="keyword">static</span> <span class="keywordtype">bool</span> is_power_of_2(uint32_t v);</div> |
| <div class="line"><a id="l00384" name="l00384"></a><span class="lineno"> 384</span> <span class="keyword">static</span> uint32_t to_log_2(uint32_t v);</div> |
| <div class="line"><a id="l00385" name="l00385"></a><span class="lineno"> 385</span> <span class="keyword">static</span> <span class="keyword">inline</span> uint32_t next_int(uint32_t max_value);</div> |
| <div class="line"><a id="l00386" name="l00386"></a><span class="lineno"> 386</span> <span class="keyword">static</span> <span class="keyword">inline</span> <span class="keywordtype">double</span> next_double_exclude_zero();</div> |
| <div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> </div> |
| <div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> <span class="keyword">class </span>iterator;</div> |
| <div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span>};</div> |
| </div> |
| <div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> </div> |
| <div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span><span class="keyword">class </span><a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a><T, A>::const_iterator {</div> |
| <div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span><span class="keyword">public</span>:</div> |
| <div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> <span class="keyword">using </span>iterator_category = std::input_iterator_tag;</div> |
| <div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> <span class="keyword">using </span>value_type = std::pair<const T&, const double>;</div> |
| <div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> <span class="keyword">using </span>difference_type = void;</div> |
| <div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span> <span class="keyword">using </span>pointer = <span class="keyword">const</span> return_value_holder<value_type>;</div> |
| <div class="line"><a id="l00398" name="l00398"></a><span class="lineno"> 398</span> <span class="keyword">using </span>reference = <span class="keyword">const</span> value_type;</div> |
| <div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> </div> |
| <div class="line"><a id="l00400" name="l00400"></a><span class="lineno"> 400</span> const_iterator(<span class="keyword">const</span> const_iterator& other);</div> |
| <div class="line"><a id="l00401" name="l00401"></a><span class="lineno"> 401</span> const_iterator& operator++();</div> |
| <div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> const_iterator& operator++(<span class="keywordtype">int</span>);</div> |
| <div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> const_iterator& other) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> const_iterator& other) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span> reference operator*() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> pointer operator->() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00407" name="l00407"></a><span class="lineno"> 407</span> </div> |
| <div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span><span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00409" name="l00409"></a><span class="lineno"> 409</span> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch</a><T, A>;</div> |
| <div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> <span class="keyword">friend</span> <span class="keyword">class </span><a class="code hl_class" href="classdatasketches_1_1var__opt__union.html">var_opt_union</a><T, A>;</div> |
| <div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> </div> |
| <div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> <span class="comment">// default iterator over full sketch</span></div> |
| <div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span> const_iterator(<span class="keyword">const</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>& sk, <span class="keywordtype">bool</span> is_end);</div> |
| <div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> </div> |
| <div class="line"><a id="l00415" name="l00415"></a><span class="lineno"> 415</span> <span class="comment">// iterates over only one of the H or R regions</span></div> |
| <div class="line"><a id="l00416" name="l00416"></a><span class="lineno"> 416</span> <span class="comment">// does not apply weight correction</span></div> |
| <div class="line"><a id="l00417" name="l00417"></a><span class="lineno"> 417</span> const_iterator(<span class="keyword">const</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>& sk, <span class="keywordtype">bool</span> is_end, <span class="keywordtype">bool</span> use_r_region);</div> |
| <div class="line"><a id="l00418" name="l00418"></a><span class="lineno"> 418</span> </div> |
| <div class="line"><a id="l00419" name="l00419"></a><span class="lineno"> 419</span> <span class="keywordtype">bool</span> get_mark() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00420" name="l00420"></a><span class="lineno"> 420</span> </div> |
| <div class="line"><a id="l00421" name="l00421"></a><span class="lineno"> 421</span> <span class="keyword">const</span> <a class="code hl_class" href="classdatasketches_1_1var__opt__sketch.html">var_opt_sketch<T, A></a>* sk_;</div> |
| <div class="line"><a id="l00422" name="l00422"></a><span class="lineno"> 422</span> <span class="keywordtype">double</span> cum_r_weight_; <span class="comment">// used for weight correction</span></div> |
| <div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> <span class="keywordtype">double</span> r_item_wt_;</div> |
| <div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> <span class="keywordtype">size_t</span> idx_;</div> |
| <div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> final_idx_;</div> |
| <div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span>};</div> |
| <div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> </div> |
| <div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span><span class="comment">// non-const iterator for internal use</span></div> |
| <div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span><span class="keyword">template</span><<span class="keyword">typename</span> T, <span class="keyword">typename</span> A></div> |
| <div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span><span class="keyword">class </span>var_opt_sketch<T, A>::iterator {</div> |
| <div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span><span class="keyword">public</span>:</div> |
| <div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span> <span class="keyword">using </span>iterator_category = std::input_iterator_tag;</div> |
| <div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> <span class="keyword">using </span>value_type = std::pair<T&, double>;</div> |
| <div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span> <span class="keyword">using </span>difference_type = void;</div> |
| <div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span> <span class="keyword">using </span>pointer = return_value_holder<value_type>;</div> |
| <div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span> <span class="keyword">using </span>reference = value_type;</div> |
| <div class="line"><a id="l00437" name="l00437"></a><span class="lineno"> 437</span> </div> |
| <div class="line"><a id="l00438" name="l00438"></a><span class="lineno"> 438</span> iterator(<span class="keyword">const</span> iterator& other);</div> |
| <div class="line"><a id="l00439" name="l00439"></a><span class="lineno"> 439</span> iterator& operator++();</div> |
| <div class="line"><a id="l00440" name="l00440"></a><span class="lineno"> 440</span> iterator& operator++(<span class="keywordtype">int</span>);</div> |
| <div class="line"><a id="l00441" name="l00441"></a><span class="lineno"> 441</span> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> iterator& other) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00442" name="l00442"></a><span class="lineno"> 442</span> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> iterator& other) <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00443" name="l00443"></a><span class="lineno"> 443</span> reference operator*();</div> |
| <div class="line"><a id="l00444" name="l00444"></a><span class="lineno"> 444</span> pointer operator->();</div> |
| <div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> </div> |
| <div class="line"><a id="l00446" name="l00446"></a><span class="lineno"> 446</span><span class="keyword">private</span>:</div> |
| <div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span> <span class="keyword">friend</span> <span class="keyword">class </span>var_opt_sketch<T, A>;</div> |
| <div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span> <span class="keyword">friend</span> <span class="keyword">class </span>var_opt_union<T, A>;</div> |
| <div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span> </div> |
| <div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span> <span class="comment">// iterates over only one of the H or R region, applying weight correction</span></div> |
| <div class="line"><a id="l00451" name="l00451"></a><span class="lineno"> 451</span> <span class="comment">// if iterating over R region (can correct for numerical precision issues)</span></div> |
| <div class="line"><a id="l00452" name="l00452"></a><span class="lineno"> 452</span> iterator(<span class="keyword">const</span> var_opt_sketch<T, A>& sk, <span class="keywordtype">bool</span> is_end, <span class="keywordtype">bool</span> use_r_region);</div> |
| <div class="line"><a id="l00453" name="l00453"></a><span class="lineno"> 453</span> </div> |
| <div class="line"><a id="l00454" name="l00454"></a><span class="lineno"> 454</span> <span class="keywordtype">bool</span> get_mark() <span class="keyword">const</span>;</div> |
| <div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span> </div> |
| <div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span> <span class="keyword">const</span> var_opt_sketch<T, A>* sk_;</div> |
| <div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</span> <span class="keywordtype">double</span> cum_r_weight_; <span class="comment">// used for weight correction</span></div> |
| <div class="line"><a id="l00458" name="l00458"></a><span class="lineno"> 458</span> <span class="keywordtype">double</span> r_item_wt_;</div> |
| <div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span> <span class="keywordtype">size_t</span> idx_;</div> |
| <div class="line"><a id="l00460" name="l00460"></a><span class="lineno"> 460</span> <span class="keyword">const</span> <span class="keywordtype">size_t</span> final_idx_;</div> |
| <div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span>};</div> |
| <div class="line"><a id="l00462" name="l00462"></a><span class="lineno"> 462</span> </div> |
| <div class="line"><a id="l00463" name="l00463"></a><span class="lineno"> 463</span> </div> |
| <div class="line"><a id="l00464" name="l00464"></a><span class="lineno"> 464</span>} <span class="comment">// namespace datasketches</span></div> |
| <div class="line"><a id="l00465" name="l00465"></a><span class="lineno"> 465</span> </div> |
| <div class="line"><a id="l00466" name="l00466"></a><span class="lineno"> 466</span><span class="preprocessor">#include "var_opt_sketch_impl.hpp"</span></div> |
| <div class="line"><a id="l00467" name="l00467"></a><span class="lineno"> 467</span> </div> |
| <div class="line"><a id="l00468" name="l00468"></a><span class="lineno"> 468</span><span class="preprocessor">#endif </span><span class="comment">// _VAR_OPT_SKETCH_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</a></div><div class="ttdoc">This sketch samples data from a stream of items.</div><div class="ttdef"><b>Definition</b> var_opt_sketch.hpp:67</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a0fa52dd153f1e3cac57d4742e2fef6fc"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a0fa52dd153f1e3cac57d4742e2fef6fc">datasketches::var_opt_sketch::items_to_string</a></div><div class="ttdeci">string< A > items_to_string() const</div><div class="ttdoc">Prints the raw sketch items to a string.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:735</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a0faac62cb9f27b09afc849def518f5cc"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a0faac62cb9f27b09afc849def518f5cc">datasketches::var_opt_sketch::begin</a></div><div class="ttdeci">const_iterator begin() const</div><div class="ttdoc">Iterator pointing to the first item in the sketch.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:1486</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a1125ed18baf3f257b5796321c7ec0f8f"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a1125ed18baf3f257b5796321c7ec0f8f">datasketches::var_opt_sketch::update</a></div><div class="ttdeci">void update(const T &item, double weight=1.0)</div><div class="ttdoc">Updates this sketch with the given data item with the given weight.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:709</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a1d0c269c23926e93b1c7a9c00e86af97"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a1d0c269c23926e93b1c7a9c00e86af97">datasketches::var_opt_sketch::serialize</a></div><div class="ttdeci">vector_bytes serialize(unsigned header_size_bytes=0, const SerDe &sd=SerDe()) const</div><div class="ttdoc">This method serializes the sketch as a vector of bytes.</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a247dd627502e887562ae763adfe863ff"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a247dd627502e887562ae763adfe863ff">datasketches::var_opt_sketch::operator=</a></div><div class="ttdeci">var_opt_sketch & operator=(const var_opt_sketch &other)</div><div class="ttdoc">Copy assignment.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:217</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a5a2b7a58dc85678d08752945ff655362"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a5a2b7a58dc85678d08752945ff655362">datasketches::var_opt_sketch::is_empty</a></div><div class="ttdeci">bool is_empty() const</div><div class="ttdoc">Returns true if the sketch is empty.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:643</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_a71f1302dd93f895508f65893f96796fa"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#a71f1302dd93f895508f65893f96796fa">datasketches::var_opt_sketch::estimate_subset_sum</a></div><div class="ttdeci">subset_summary estimate_subset_sum(P predicate) const</div><div class="ttdoc">Computes an estimated subset sum from the entire stream for objects matching a given predicate.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:1381</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_ab0856fc62bc5f6b154feae4a09e7d422"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#ab0856fc62bc5f6b154feae4a09e7d422">datasketches::var_opt_sketch::deserialize</a></div><div class="ttdeci">static var_opt_sketch deserialize(const void *bytes, size_t size, const SerDe &sd=SerDe(), const A &allocator=A())</div><div class="ttdoc">This method deserializes a sketch from a given array of bytes.</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_ac481918ec96d79b27813d32bcc2a247d"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#ac481918ec96d79b27813d32bcc2a247d">datasketches::var_opt_sketch::get_num_samples</a></div><div class="ttdeci">uint32_t get_num_samples() const</div><div class="ttdoc">Returns the number of samples currently in the sketch.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:703</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_ad20897c5c8bd47f5d4005989bead0e55"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#ad20897c5c8bd47f5d4005989bead0e55">datasketches::var_opt_sketch::reset</a></div><div class="ttdeci">void reset()</div><div class="ttdoc">Resets the sketch to its default, empty state.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:648</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_ad9a5259d93d148b5c2050d68e7788716"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#ad9a5259d93d148b5c2050d68e7788716">datasketches::var_opt_sketch::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 sketch.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:297</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_ae9e1e5356b5d10a177fa50f7bdfdfd96"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#ae9e1e5356b5d10a177fa50f7bdfdfd96">datasketches::var_opt_sketch::end</a></div><div class="ttdeci">const_iterator end() const</div><div class="ttdoc">Iterator pointing to the past-the-end item in the sketch.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:1491</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::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__sketch_html_aed372241c10ffd041bee85602edb199a"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#aed372241c10ffd041bee85602edb199a">datasketches::var_opt_sketch::to_string</a></div><div class="ttdeci">string< A > to_string() const</div><div class="ttdoc">Prints a summary of the sketch.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:719</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_af561f5cd76ff61773713c627bc53b0a2"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#af561f5cd76ff61773713c627bc53b0a2">datasketches::var_opt_sketch::get_k</a></div><div class="ttdeci">uint32_t get_k() const</div><div class="ttdoc">Returns the configured maximum sample size.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:698</div></div> |
| <div class="ttc" id="aclassdatasketches_1_1var__opt__sketch_html_af857be9469a7565252626f27e1f9d74d"><div class="ttname"><a href="classdatasketches_1_1var__opt__sketch.html#af857be9469a7565252626f27e1f9d74d">datasketches::var_opt_sketch::get_n</a></div><div class="ttdeci">uint64_t get_n() const</div><div class="ttdoc">Returns the length of the input stream.</div><div class="ttdef"><b>Definition</b> var_opt_sketch_impl.hpp:693</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="anamespacedatasketches_1_1var__opt__constants_html_a02799eee5e87428b1c72e6c4c282d68e"><div class="ttname"><a href="namespacedatasketches_1_1var__opt__constants.html#a02799eee5e87428b1c72e6c4c282d68e">datasketches::var_opt_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> var_opt_sketch.hpp:49</div></div> |
| <div class="ttc" id="anamespacedatasketches_1_1var__opt__constants_html_aef0073265694689f2a7281205c133523"><div class="ttname"><a href="namespacedatasketches_1_1var__opt__constants.html#aef0073265694689f2a7281205c133523">datasketches::var_opt_constants::MAX_K</a></div><div class="ttdeci">const uint32_t MAX_K</div><div class="ttdoc">maximum value of parameter K</div><div class="ttdef"><b>Definition</b> var_opt_sketch.hpp:51</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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