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| <div class="title">HllArray-internal.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 _HLLARRAY_INTERNAL_HPP_</span></div> |
| <div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#define _HLLARRAY_INTERNAL_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 "HllArray.hpp"</span></div> |
| <div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="preprocessor">#include "HllUtil.hpp"</span></div> |
| <div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="preprocessor">#include "HarmonicNumbers.hpp"</span></div> |
| <div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="preprocessor">#include "CubicInterpolation.hpp"</span></div> |
| <div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#include "CompositeInterpolationXTable.hpp"</span></div> |
| <div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#include "CouponList.hpp"</span></div> |
| <div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#include "inv_pow2_table.hpp"</span></div> |
| <div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="preprocessor">#include <cstring></span></div> |
| <div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#include <cmath></span></div> |
| <div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="preprocessor">#include <stdexcept></span></div> |
| <div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <string></span></div> |
| <div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  </div> |
| <div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="keyword">namespace </span><a class="code" href="namespacedatasketches.html">datasketches</a> {</div> |
| <div class="line"><a name="l00036"></a><span class="lineno"> 36</span>  </div> |
| <div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00038"></a><span class="lineno"> 38</span> HllArray<A>::HllArray(uint8_t lgConfigK, <a class="code" href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4">target_hll_type</a> tgtHllType, <span class="keywordtype">bool</span> startFullSize, <span class="keyword">const</span> A& allocator):</div> |
| <div class="line"><a name="l00039"></a><span class="lineno"> 39</span> HllSketchImpl<A>(lgConfigK, tgtHllType, hll_mode::HLL, startFullSize),</div> |
| <div class="line"><a name="l00040"></a><span class="lineno"> 40</span> hipAccum_(0.0),</div> |
| <div class="line"><a name="l00041"></a><span class="lineno"> 41</span> kxq0_(1 << lgConfigK),</div> |
| <div class="line"><a name="l00042"></a><span class="lineno"> 42</span> kxq1_(0.0),</div> |
| <div class="line"><a name="l00043"></a><span class="lineno"> 43</span> hllByteArr_(allocator),</div> |
| <div class="line"><a name="l00044"></a><span class="lineno"> 44</span> curMin_(0),</div> |
| <div class="line"><a name="l00045"></a><span class="lineno"> 45</span> numAtCurMin_(1 << lgConfigK),</div> |
| <div class="line"><a name="l00046"></a><span class="lineno"> 46</span> oooFlag_(false),</div> |
| <div class="line"><a name="l00047"></a><span class="lineno"> 47</span> rebuild_kxq_curmin_(false)</div> |
| <div class="line"><a name="l00048"></a><span class="lineno"> 48</span> {}</div> |
| <div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  </div> |
| <div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00051"></a><span class="lineno"> 51</span> HllArray<A>::HllArray(<span class="keyword">const</span> HllArray& other, target_hll_type tgtHllType) :</div> |
| <div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  HllSketchImpl<A>(other.getLgConfigK(), tgtHllType, hll_mode::HLL, other.isStartFullSize()),</div> |
| <div class="line"><a name="l00053"></a><span class="lineno"> 53</span>  <span class="comment">// remaining fields are initialized to empty sketch defaults</span></div> |
| <div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="comment">// and left to subclass constructor to populate</span></div> |
| <div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  hipAccum_(0.0),</div> |
| <div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  kxq0_(1 << other.getLgConfigK()),</div> |
| <div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  kxq1_(0.0),</div> |
| <div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  hllByteArr_(other.getAllocator()),</div> |
| <div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  curMin_(0),</div> |
| <div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  numAtCurMin_(1 << other.getLgConfigK()),</div> |
| <div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  oooFlag_(false),</div> |
| <div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  rebuild_kxq_curmin_(false)</div> |
| <div class="line"><a name="l00063"></a><span class="lineno"> 63</span> {}</div> |
| <div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  </div> |
| <div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00066"></a><span class="lineno"> 66</span> HllArray<A>* HllArray<A>::copyAs(target_hll_type tgtHllType)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="comment">// we may need to recompute KxQ and curMin data for a union gadget,</span></div> |
| <div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="comment">// so only use a direct copy if we have a valid sketch</span></div> |
| <div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <span class="keywordflow">if</span> (tgtHllType == this->getTgtHllType() && !this->isRebuildKxqCurminFlag()) {</div> |
| <div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  <span class="keywordflow">return</span> <span class="keyword">static_cast<</span>HllArray*<span class="keyword">></span>(copy());</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>  </div> |
| <div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  <span class="comment">// the factory methods replay the coupons and will always rebuild</span></div> |
| <div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  <span class="comment">// the sketch in a consistent way</span></div> |
| <div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  <span class="keywordflow">switch</span> (tgtHllType) {</div> |
| <div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">case</span> target_hll_type::HLL_4:</div> |
| <div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <span class="keywordflow">return</span> HllSketchImplFactory<A>::convertToHll4(*<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  <span class="keywordflow">case</span> target_hll_type::HLL_6:</div> |
| <div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> HllSketchImplFactory<A>::convertToHll6(*<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  <span class="keywordflow">case</span> target_hll_type::HLL_8:</div> |
| <div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> HllSketchImplFactory<A>::convertToHll8(*<span class="keyword">this</span>);</div> |
| <div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  <span class="keywordflow">default</span>:</div> |
| <div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Invalid target HLL type"</span>); </div> |
| <div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  }</div> |
| <div class="line"><a name="l00085"></a><span class="lineno"> 85</span> }</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> A></div> |
| <div class="line"><a name="l00088"></a><span class="lineno"> 88</span> HllArray<A>* HllArray<A>::newHll(<span class="keyword">const</span> <span class="keywordtype">void</span>* bytes, <span class="keywordtype">size_t</span> len, <span class="keyword">const</span> A& allocator) {</div> |
| <div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordflow">if</span> (len < hll_constants::HLL_BYTE_ARR_START) {</div> |
| <div class="line"><a name="l00090"></a><span class="lineno"> 90</span>  <span class="keywordflow">throw</span> std::out_of_range(<span class="stringliteral">"Input data length insufficient to hold HLL array"</span>);</div> |
| <div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  }</div> |
| <div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  </div> |
| <div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keyword">const</span> uint8_t* data = <span class="keyword">static_cast<</span><span class="keyword">const </span>uint8_t*<span class="keyword">></span>(bytes);</div> |
| <div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  <span class="keywordflow">if</span> (data[hll_constants::PREAMBLE_INTS_BYTE] != hll_constants::HLL_PREINTS) {</div> |
| <div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Incorrect number of preInts in input stream"</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>  <span class="keywordflow">if</span> (data[hll_constants::SER_VER_BYTE] != hll_constants::SER_VER) {</div> |
| <div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Wrong ser ver in input stream"</span>);</div> |
| <div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  }</div> |
| <div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">if</span> (data[hll_constants::FAMILY_BYTE] != hll_constants::FAMILY_ID) {</div> |
| <div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Input array is not an HLL sketch"</span>);</div> |
| <div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  }</div> |
| <div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  </div> |
| <div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  <span class="keyword">const</span> hll_mode mode = HllSketchImpl<A>::extractCurMode(data[hll_constants::MODE_BYTE]);</div> |
| <div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  <span class="keywordflow">if</span> (mode != HLL) {</div> |
| <div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Calling HLL array constructor with non-HLL mode data"</span>);</div> |
| <div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  }</div> |
| <div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  </div> |
| <div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <span class="keyword">const</span> <a class="code" href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4">target_hll_type</a> tgtHllType = HllSketchImpl<A>::extractTgtHllType(data[hll_constants::MODE_BYTE]);</div> |
| <div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> oooFlag = ((data[hll_constants::FLAGS_BYTE] & hll_constants::OUT_OF_ORDER_FLAG_MASK) ? <span class="keyword">true</span> : <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> comapctFlag = ((data[hll_constants::FLAGS_BYTE] & hll_constants::COMPACT_FLAG_MASK) ? <span class="keyword">true</span> : <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> startFullSizeFlag = ((data[hll_constants::FLAGS_BYTE] & hll_constants::FULL_SIZE_FLAG_MASK) ? <span class="keyword">true</span> : <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  </div> |
| <div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  <span class="keyword">const</span> uint8_t lgK = data[hll_constants::LG_K_BYTE];</div> |
| <div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keyword">const</span> uint8_t curMin = data[hll_constants::HLL_CUR_MIN_BYTE];</div> |
| <div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  </div> |
| <div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  <span class="keyword">const</span> uint32_t arrayBytes = hllArrBytes(tgtHllType, lgK);</div> |
| <div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  <span class="keywordflow">if</span> (len < <span class="keyword">static_cast<</span><span class="keywordtype">size_t</span><span class="keyword">></span>(hll_constants::HLL_BYTE_ARR_START + arrayBytes)) {</div> |
| <div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">throw</span> std::out_of_range(<span class="stringliteral">"Input array too small to hold sketch image"</span>);</div> |
| <div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  }</div> |
| <div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  </div> |
| <div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordtype">double</span> hip, kxq0, kxq1;</div> |
| <div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  std::memcpy(&hip, data + hll_constants::HIP_ACCUM_DOUBLE, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  std::memcpy(&kxq0, data + hll_constants::KXQ0_DOUBLE, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  std::memcpy(&kxq1, data + hll_constants::KXQ1_DOUBLE, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  </div> |
| <div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  uint32_t numAtCurMin, auxCount;</div> |
| <div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  std::memcpy(&numAtCurMin, data + hll_constants::CUR_MIN_COUNT_INT, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>));</div> |
| <div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  std::memcpy(&auxCount, data + hll_constants::AUX_COUNT_INT, <span class="keyword">sizeof</span>(<span class="keywordtype">int</span>));</div> |
| <div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  </div> |
| <div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  AuxHashMap<A>* auxHashMap = <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  <span class="keyword">typedef</span> std::unique_ptr<AuxHashMap<A>, std::function<void(AuxHashMap<A>*)>> aux_hash_map_ptr;</div> |
| <div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  aux_hash_map_ptr aux_ptr;</div> |
| <div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  <span class="keywordflow">if</span> (auxCount > 0) { <span class="comment">// necessarily TgtHllType == HLL_4</span></div> |
| <div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  uint8_t auxLgIntArrSize = data[4];</div> |
| <div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> offset = hll_constants::HLL_BYTE_ARR_START + arrayBytes;</div> |
| <div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keyword">const</span> uint8_t* auxDataStart = data + offset;</div> |
| <div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  auxHashMap = AuxHashMap<A>::deserialize(auxDataStart, len - offset, lgK, auxCount, auxLgIntArrSize, comapctFlag, allocator);</div> |
| <div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  aux_ptr = aux_hash_map_ptr(auxHashMap, auxHashMap->make_deleter());</div> |
| <div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  }</div> |
| <div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  </div> |
| <div class="line"><a name="l00142"></a><span class="lineno"> 142</span>  HllArray<A>* sketch = HllSketchImplFactory<A>::newHll(lgK, tgtHllType, startFullSizeFlag, allocator);</div> |
| <div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  sketch->putCurMin(curMin);</div> |
| <div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  sketch->putOutOfOrderFlag(oooFlag);</div> |
| <div class="line"><a name="l00145"></a><span class="lineno"> 145</span>  <span class="keywordflow">if</span> (!oooFlag) sketch->putHipAccum(hip);</div> |
| <div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  sketch->putKxQ0(kxq0);</div> |
| <div class="line"><a name="l00147"></a><span class="lineno"> 147</span>  sketch->putKxQ1(kxq1);</div> |
| <div class="line"><a name="l00148"></a><span class="lineno"> 148</span>  sketch->putNumAtCurMin(numAtCurMin);</div> |
| <div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  </div> |
| <div class="line"><a name="l00150"></a><span class="lineno"> 150</span>  std::memcpy(sketch->hllByteArr_.data(), data + hll_constants::HLL_BYTE_ARR_START, arrayBytes);</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>  <span class="keywordflow">if</span> (auxHashMap != <span class="keyword">nullptr</span>)</div> |
| <div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  ((Hll4Array<A>*)sketch)->putAuxHashMap(auxHashMap);</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>  aux_ptr.release();</div> |
| <div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  <span class="keywordflow">return</span> sketch;</div> |
| <div class="line"><a name="l00157"></a><span class="lineno"> 157</span> }</div> |
| <div class="line"><a name="l00158"></a><span class="lineno"> 158</span>  </div> |
| <div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00160"></a><span class="lineno"> 160</span> HllArray<A>* HllArray<A>::newHll(std::istream& is, <span class="keyword">const</span> A& allocator) {</div> |
| <div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  uint8_t listHeader[8];</div> |
| <div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  read(is, listHeader, 8 * <span class="keyword">sizeof</span>(uint8_t));</div> |
| <div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  </div> |
| <div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">if</span> (listHeader[hll_constants::PREAMBLE_INTS_BYTE] != hll_constants::HLL_PREINTS) {</div> |
| <div class="line"><a name="l00165"></a><span class="lineno"> 165</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Incorrect number of preInts in input stream"</span>);</div> |
| <div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  }</div> |
| <div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">if</span> (listHeader[hll_constants::SER_VER_BYTE] != hll_constants::SER_VER) {</div> |
| <div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Wrong ser ver in input stream"</span>);</div> |
| <div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  }</div> |
| <div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  <span class="keywordflow">if</span> (listHeader[hll_constants::FAMILY_BYTE] != hll_constants::FAMILY_ID) {</div> |
| <div class="line"><a name="l00171"></a><span class="lineno"> 171</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Input stream is not an HLL sketch"</span>);</div> |
| <div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  }</div> |
| <div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  </div> |
| <div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  hll_mode mode = HllSketchImpl<A>::extractCurMode(listHeader[hll_constants::MODE_BYTE]);</div> |
| <div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">if</span> (mode != HLL) {</div> |
| <div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Calling HLL construtor with non-HLL mode data"</span>);</div> |
| <div class="line"><a name="l00177"></a><span class="lineno"> 177</span>  }</div> |
| <div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  </div> |
| <div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="keyword">const</span> <a class="code" href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4">target_hll_type</a> tgtHllType = HllSketchImpl<A>::extractTgtHllType(listHeader[hll_constants::MODE_BYTE]);</div> |
| <div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> oooFlag = ((listHeader[hll_constants::FLAGS_BYTE] & hll_constants::OUT_OF_ORDER_FLAG_MASK) ? <span class="keyword">true</span> : <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> comapctFlag = ((listHeader[hll_constants::FLAGS_BYTE] & hll_constants::COMPACT_FLAG_MASK) ? <span class="keyword">true</span> : <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> startFullSizeFlag = ((listHeader[hll_constants::FLAGS_BYTE] & hll_constants::FULL_SIZE_FLAG_MASK) ? <span class="keyword">true</span> : <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div> |
| <div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  <span class="keyword">const</span> uint8_t lgK = listHeader[hll_constants::LG_K_BYTE];</div> |
| <div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  <span class="keyword">const</span> uint8_t curMin = listHeader[hll_constants::HLL_CUR_MIN_BYTE];</div> |
| <div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  </div> |
| <div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  HllArray* sketch = HllSketchImplFactory<A>::newHll(lgK, tgtHllType, startFullSizeFlag, allocator);</div> |
| <div class="line"><a name="l00188"></a><span class="lineno"> 188</span>  <span class="keyword">typedef</span> std::unique_ptr<HllArray<A>, std::function<void(HllSketchImpl<A>*)>> hll_array_ptr;</div> |
| <div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  hll_array_ptr sketch_ptr(sketch, sketch->get_deleter());</div> |
| <div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  sketch->putCurMin(curMin);</div> |
| <div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  sketch->putOutOfOrderFlag(oooFlag);</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="keyword">const</span> <span class="keyword">auto</span> hip = read<double>(is);</div> |
| <div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  <span class="keyword">const</span> <span class="keyword">auto</span> kxq0 = read<double>(is);</div> |
| <div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <span class="keyword">const</span> <span class="keyword">auto</span> kxq1 = read<double>(is);</div> |
| <div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">if</span> (!oooFlag) sketch->putHipAccum(hip);</div> |
| <div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  sketch->putKxQ0(kxq0);</div> |
| <div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  sketch->putKxQ1(kxq1);</div> |
| <div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  </div> |
| <div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keyword">const</span> <span class="keyword">auto</span> numAtCurMin = read<uint32_t>(is);</div> |
| <div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">const</span> <span class="keyword">auto</span> auxCount = read<uint32_t>(is);</div> |
| <div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  sketch->putNumAtCurMin(numAtCurMin);</div> |
| <div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  </div> |
| <div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  read(is, sketch->hllByteArr_.data(), sketch->getHllByteArrBytes());</div> |
| <div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  </div> |
| <div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <span class="keywordflow">if</span> (auxCount > 0) { <span class="comment">// necessarily TgtHllType == HLL_4</span></div> |
| <div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  uint8_t auxLgIntArrSize = listHeader[4];</div> |
| <div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  AuxHashMap<A>* auxHashMap = AuxHashMap<A>::deserialize(is, lgK, auxCount, auxLgIntArrSize, comapctFlag, allocator);</div> |
| <div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  ((Hll4Array<A>*)sketch)->putAuxHashMap(auxHashMap);</div> |
| <div class="line"><a name="l00210"></a><span class="lineno"> 210</span>  }</div> |
| <div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  </div> |
| <div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (!is.good())</div> |
| <div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  <span class="keywordflow">throw</span> std::runtime_error(<span class="stringliteral">"error reading from std::istream"</span>); </div> |
| <div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  </div> |
| <div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  <span class="keywordflow">return</span> sketch_ptr.release();</div> |
| <div class="line"><a name="l00216"></a><span class="lineno"> 216</span> }</div> |
| <div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  </div> |
| <div class="line"><a name="l00218"></a><span class="lineno"> 218</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00219"></a><span class="lineno"> 219</span> <span class="keyword">auto</span> HllArray<A>::serialize(<span class="keywordtype">bool</span> compact, <span class="keywordtype">unsigned</span> header_size_bytes) <span class="keyword">const</span> -> vector_bytes {</div> |
| <div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> sketchSizeBytes = (compact ? getCompactSerializationBytes() : getUpdatableSerializationBytes()) + header_size_bytes;</div> |
| <div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  vector_bytes byteArr(sketchSizeBytes, 0, getAllocator());</div> |
| <div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  uint8_t* bytes = byteArr.data() + header_size_bytes;</div> |
| <div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  AuxHashMap<A>* auxHashMap = getAuxHashMap();</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>  bytes[hll_constants::PREAMBLE_INTS_BYTE] = <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(getPreInts());</div> |
| <div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  bytes[hll_constants::SER_VER_BYTE] = <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(hll_constants::SER_VER);</div> |
| <div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  bytes[hll_constants::FAMILY_BYTE] = <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(hll_constants::FAMILY_ID);</div> |
| <div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  bytes[hll_constants::LG_K_BYTE] = <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(this->lgConfigK_);</div> |
| <div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  bytes[hll_constants::LG_ARR_BYTE] = <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(auxHashMap == <span class="keyword">nullptr</span> ? 0 : auxHashMap->getLgAuxArrInts());</div> |
| <div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  bytes[hll_constants::FLAGS_BYTE] = this->makeFlagsByte(compact);</div> |
| <div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  bytes[hll_constants::HLL_CUR_MIN_BYTE] = <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(curMin_);</div> |
| <div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  bytes[hll_constants::MODE_BYTE] = this->makeModeByte();</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>  std::memcpy(bytes + hll_constants::HIP_ACCUM_DOUBLE, &hipAccum_, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  std::memcpy(bytes + hll_constants::KXQ0_DOUBLE, &kxq0_, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  std::memcpy(bytes + hll_constants::KXQ1_DOUBLE, &kxq1_, <span class="keyword">sizeof</span>(<span class="keywordtype">double</span>));</div> |
| <div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  std::memcpy(bytes + hll_constants::CUR_MIN_COUNT_INT, &numAtCurMin_, <span class="keyword">sizeof</span>(uint32_t));</div> |
| <div class="line"><a name="l00238"></a><span class="lineno"> 238</span>  <span class="keyword">const</span> uint32_t auxCount = (auxHashMap == <span class="keyword">nullptr</span> ? 0 : auxHashMap->getAuxCount());</div> |
| <div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  std::memcpy(bytes + hll_constants::AUX_COUNT_INT, &auxCount, <span class="keyword">sizeof</span>(uint32_t));</div> |
| <div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  </div> |
| <div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keyword">const</span> uint32_t hllByteArrBytes = getHllByteArrBytes();</div> |
| <div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  std::memcpy(bytes + getMemDataStart(), hllByteArr_.data(), hllByteArrBytes);</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>  <span class="comment">// aux map if HLL_4</span></div> |
| <div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">if</span> (this->tgtHllType_ == HLL_4) {</div> |
| <div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  bytes += getMemDataStart() + hllByteArrBytes; <span class="comment">// start of auxHashMap</span></div> |
| <div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="keywordflow">if</span> (auxHashMap != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">if</span> (compact) {</div> |
| <div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> uint32_t coupon: *auxHashMap) {</div> |
| <div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  std::memcpy(bytes, &coupon, <span class="keyword">sizeof</span>(coupon));</div> |
| <div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  bytes += <span class="keyword">sizeof</span>(coupon);</div> |
| <div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  }</div> |
| <div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00254"></a><span class="lineno"> 254</span>  std::memcpy(bytes, auxHashMap->getAuxIntArr(), auxHashMap->getUpdatableSizeBytes());</div> |
| <div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  }</div> |
| <div class="line"><a name="l00256"></a><span class="lineno"> 256</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!compact) {</div> |
| <div class="line"><a name="l00257"></a><span class="lineno"> 257</span>  <span class="comment">// if updatable, we write even if currently unused so the binary can be wrapped</span></div> |
| <div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  uint32_t auxBytes = 4 << hll_constants::LG_AUX_ARR_INTS[this->lgConfigK_];</div> |
| <div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  std::fill_n(bytes, auxBytes, <span class="keyword">static_cast<</span>uint8_t<span class="keyword">></span>(0));</div> |
| <div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  }</div> |
| <div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  }</div> |
| <div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  </div> |
| <div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keywordflow">return</span> byteArr;</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>  </div> |
| <div class="line"><a name="l00266"></a><span class="lineno"> 266</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00267"></a><span class="lineno"> 267</span> <span class="keywordtype">void</span> HllArray<A>::serialize(std::ostream& os, <span class="keywordtype">bool</span> compact)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00268"></a><span class="lineno"> 268</span>  <span class="comment">// header</span></div> |
| <div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  <span class="keyword">const</span> uint8_t preInts = getPreInts();</div> |
| <div class="line"><a name="l00270"></a><span class="lineno"> 270</span>  write(os, preInts);</div> |
| <div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="keyword">const</span> uint8_t serialVersion = hll_constants::SER_VER;</div> |
| <div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  write(os, serialVersion);</div> |
| <div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keyword">const</span> uint8_t familyId = hll_constants::FAMILY_ID;</div> |
| <div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  write(os, familyId);</div> |
| <div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  <span class="keyword">const</span> uint8_t lgKByte = this->lgConfigK_;</div> |
| <div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  write(os, lgKByte);</div> |
| <div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  </div> |
| <div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  AuxHashMap<A>* auxHashMap = getAuxHashMap();</div> |
| <div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  uint8_t lgArrByte = 0;</div> |
| <div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  <span class="keywordflow">if</span> (auxHashMap != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  lgArrByte = auxHashMap->getLgAuxArrInts();</div> |
| <div class="line"><a name="l00282"></a><span class="lineno"> 282</span>  }</div> |
| <div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  write(os, lgArrByte);</div> |
| <div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  </div> |
| <div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keyword">const</span> uint8_t flagsByte = this->makeFlagsByte(compact);</div> |
| <div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  write(os, flagsByte);</div> |
| <div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  write(os, curMin_);</div> |
| <div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  <span class="keyword">const</span> uint8_t modeByte = this->makeModeByte();</div> |
| <div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  write(os, modeByte);</div> |
| <div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  </div> |
| <div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  <span class="comment">// estimator data</span></div> |
| <div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  write(os, hipAccum_);</div> |
| <div class="line"><a name="l00293"></a><span class="lineno"> 293</span>  write(os, kxq0_);</div> |
| <div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  write(os, kxq1_);</div> |
| <div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  </div> |
| <div class="line"><a name="l00296"></a><span class="lineno"> 296</span>  <span class="comment">// array data</span></div> |
| <div class="line"><a name="l00297"></a><span class="lineno"> 297</span>  write(os, numAtCurMin_);</div> |
| <div class="line"><a name="l00298"></a><span class="lineno"> 298</span>  </div> |
| <div class="line"><a name="l00299"></a><span class="lineno"> 299</span>  <span class="keyword">const</span> uint32_t auxCount = (auxHashMap == <span class="keyword">nullptr</span> ? 0 : auxHashMap->getAuxCount());</div> |
| <div class="line"><a name="l00300"></a><span class="lineno"> 300</span>  write(os, auxCount);</div> |
| <div class="line"><a name="l00301"></a><span class="lineno"> 301</span>  write(os, hllByteArr_.data(), getHllByteArrBytes());</div> |
| <div class="line"><a name="l00302"></a><span class="lineno"> 302</span>  </div> |
| <div class="line"><a name="l00303"></a><span class="lineno"> 303</span>  <span class="comment">// aux map if HLL_4</span></div> |
| <div class="line"><a name="l00304"></a><span class="lineno"> 304</span>  <span class="keywordflow">if</span> (this->tgtHllType_ == HLL_4) {</div> |
| <div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  <span class="keywordflow">if</span> (auxHashMap != <span class="keyword">nullptr</span>) {</div> |
| <div class="line"><a name="l00306"></a><span class="lineno"> 306</span>  <span class="keywordflow">if</span> (compact) {</div> |
| <div class="line"><a name="l00307"></a><span class="lineno"> 307</span>  <span class="keywordflow">for</span> (<span class="keyword">const</span> uint32_t coupon: *auxHashMap) {</div> |
| <div class="line"><a name="l00308"></a><span class="lineno"> 308</span>  write(os, coupon);</div> |
| <div class="line"><a name="l00309"></a><span class="lineno"> 309</span>  }</div> |
| <div class="line"><a name="l00310"></a><span class="lineno"> 310</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00311"></a><span class="lineno"> 311</span>  write(os, auxHashMap->getAuxIntArr(), auxHashMap->getUpdatableSizeBytes());</div> |
| <div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  }</div> |
| <div class="line"><a name="l00313"></a><span class="lineno"> 313</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (!compact) {</div> |
| <div class="line"><a name="l00314"></a><span class="lineno"> 314</span>  <span class="comment">// if updatable, we write even if currently unused so the binary can be wrapped </span></div> |
| <div class="line"><a name="l00315"></a><span class="lineno"> 315</span>  uint32_t auxBytes = 4 << hll_constants::LG_AUX_ARR_INTS[this->lgConfigK_];</div> |
| <div class="line"><a name="l00316"></a><span class="lineno"> 316</span>  std::fill_n(std::ostreambuf_iterator<char>(os), auxBytes, <span class="keyword">static_cast<</span><span class="keywordtype">char</span><span class="keyword">></span>(0));</div> |
| <div class="line"><a name="l00317"></a><span class="lineno"> 317</span>  }</div> |
| <div class="line"><a name="l00318"></a><span class="lineno"> 318</span>  }</div> |
| <div class="line"><a name="l00319"></a><span class="lineno"> 319</span> }</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> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00322"></a><span class="lineno"> 322</span> <span class="keywordtype">double</span> HllArray<A>::getEstimate()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  <span class="keywordflow">if</span> (oooFlag_) {</div> |
| <div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  <span class="keywordflow">return</span> getCompositeEstimate();</div> |
| <div class="line"><a name="l00325"></a><span class="lineno"> 325</span>  }</div> |
| <div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  <span class="keywordflow">return</span> hipAccum_;</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>  </div> |
| <div class="line"><a name="l00329"></a><span class="lineno"> 329</span> <span class="comment">// HLL UPPER AND LOWER BOUNDS</span></div> |
| <div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  </div> |
| <div class="line"><a name="l00331"></a><span class="lineno"> 331</span> <span class="comment">/*</span></div> |
| <div class="line"><a name="l00332"></a><span class="lineno"> 332</span> <span class="comment"> * The upper and lower bounds are not symmetric and thus are treated slightly differently.</span></div> |
| <div class="line"><a name="l00333"></a><span class="lineno"> 333</span> <span class="comment"> * For the lower bound, when the unique count is <= k, LB >= numNonZeros, where</span></div> |
| <div class="line"><a name="l00334"></a><span class="lineno"> 334</span> <span class="comment"> * numNonZeros = k - numAtCurMin AND curMin == 0.</span></div> |
| <div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00336"></a><span class="lineno"> 336</span> <span class="comment"> * For HLL6 and HLL8, curMin is always 0 and numAtCurMin is initialized to k and is decremented</span></div> |
| <div class="line"><a name="l00337"></a><span class="lineno"> 337</span> <span class="comment"> * down for each valid update until it reaches 0, where it stays. Thus, for these two</span></div> |
| <div class="line"><a name="l00338"></a><span class="lineno"> 338</span> <span class="comment"> * isomorphs, when numAtCurMin = 0, means the true curMin is > 0 and the unique count must be</span></div> |
| <div class="line"><a name="l00339"></a><span class="lineno"> 339</span> <span class="comment"> * greater than k.</span></div> |
| <div class="line"><a name="l00340"></a><span class="lineno"> 340</span> <span class="comment"> *</span></div> |
| <div class="line"><a name="l00341"></a><span class="lineno"> 341</span> <span class="comment"> * HLL4 always maintains both curMin and numAtCurMin dynamically. Nonetheless, the rules for</span></div> |
| <div class="line"><a name="l00342"></a><span class="lineno"> 342</span> <span class="comment"> * the very small values <= k where curMin = 0 still apply.</span></div> |
| <div class="line"><a name="l00343"></a><span class="lineno"> 343</span> <span class="comment"> */</span></div> |
| <div class="line"><a name="l00344"></a><span class="lineno"> 344</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00345"></a><span class="lineno"> 345</span> <span class="keywordtype">double</span> HllArray<A>::getLowerBound(uint8_t numStdDev)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  HllUtil<A>::checkNumStdDev(numStdDev);</div> |
| <div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  <span class="keyword">const</span> uint32_t configK = 1 << this->lgConfigK_;</div> |
| <div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> numNonZeros = ((curMin_ == 0) ? (configK - numAtCurMin_) : configK);</div> |
| <div class="line"><a name="l00349"></a><span class="lineno"> 349</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> relErr = HllUtil<A>::getRelErr(<span class="keyword">false</span>, this->oooFlag_, this->lgConfigK_, numStdDev);</div> |
| <div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  <span class="keywordflow">return</span> fmax(getEstimate() / (1.0 + relErr), numNonZeros);</div> |
| <div class="line"><a name="l00351"></a><span class="lineno"> 351</span> }</div> |
| <div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  </div> |
| <div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00354"></a><span class="lineno"> 354</span> <span class="keywordtype">double</span> HllArray<A>::getUpperBound(uint8_t numStdDev)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  HllUtil<A>::checkNumStdDev(numStdDev);</div> |
| <div class="line"><a name="l00356"></a><span class="lineno"> 356</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> relErr = HllUtil<A>::getRelErr(<span class="keyword">true</span>, this->oooFlag_, this->lgConfigK_, numStdDev);</div> |
| <div class="line"><a name="l00357"></a><span class="lineno"> 357</span>  <span class="keywordflow">return</span> getEstimate() / (1.0 + relErr);</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="l00365"></a><span class="lineno"> 365</span> <span class="comment">// Original C: again-two-registers.c hhb_get_composite_estimate L1489</span></div> |
| <div class="line"><a name="l00366"></a><span class="lineno"> 366</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00367"></a><span class="lineno"> 367</span> <span class="keywordtype">double</span> HllArray<A>::getCompositeEstimate()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> rawEst = getHllRawEstimate();</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">const</span> <span class="keywordtype">double</span>* xArr = CompositeInterpolationXTable<A>::get_x_arr(this->lgConfigK_);</div> |
| <div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  <span class="keyword">const</span> uint32_t xArrLen = CompositeInterpolationXTable<A>::get_x_arr_length();</div> |
| <div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> yStride = CompositeInterpolationXTable<A>::get_y_stride(this->lgConfigK_);</div> |
| <div class="line"><a name="l00373"></a><span class="lineno"> 373</span>  </div> |
| <div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  <span class="keywordflow">if</span> (rawEst < xArr[0]) {</div> |
| <div class="line"><a name="l00375"></a><span class="lineno"> 375</span>  <span class="keywordflow">return</span> 0;</div> |
| <div class="line"><a name="l00376"></a><span class="lineno"> 376</span>  }</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="keyword">const</span> uint32_t xArrLenM1 = xArrLen - 1;</div> |
| <div class="line"><a name="l00379"></a><span class="lineno"> 379</span>  </div> |
| <div class="line"><a name="l00380"></a><span class="lineno"> 380</span>  <span class="keywordflow">if</span> (rawEst > xArr[xArrLenM1]) {</div> |
| <div class="line"><a name="l00381"></a><span class="lineno"> 381</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> finalY = yStride * xArrLenM1;</div> |
| <div class="line"><a name="l00382"></a><span class="lineno"> 382</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> factor = finalY / xArr[xArrLenM1];</div> |
| <div class="line"><a name="l00383"></a><span class="lineno"> 383</span>  <span class="keywordflow">return</span> rawEst * factor;</div> |
| <div class="line"><a name="l00384"></a><span class="lineno"> 384</span>  }</div> |
| <div class="line"><a name="l00385"></a><span class="lineno"> 385</span>  </div> |
| <div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordtype">double</span> adjEst = CubicInterpolation<A>::usingXArrAndYStride(xArr, xArrLen, yStride, rawEst);</div> |
| <div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  </div> |
| <div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  <span class="comment">// We need to completely avoid the linear_counting estimator if it might have a crazy value.</span></div> |
| <div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="comment">// Empirical evidence suggests that the threshold 3*k will keep us safe if 2^4 <= k <= 2^21.</span></div> |
| <div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  </div> |
| <div class="line"><a name="l00391"></a><span class="lineno"> 391</span>  <span class="keywordflow">if</span> (adjEst > (3 << this->lgConfigK_)) { <span class="keywordflow">return</span> adjEst; }</div> |
| <div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  </div> |
| <div class="line"><a name="l00393"></a><span class="lineno"> 393</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> linEst = getHllBitMapEstimate();</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>  <span class="comment">// Bias is created when the value of an estimator is compared with a threshold to decide whether</span></div> |
| <div class="line"><a name="l00396"></a><span class="lineno"> 396</span>  <span class="comment">// to use that estimator or a different one.</span></div> |
| <div class="line"><a name="l00397"></a><span class="lineno"> 397</span>  <span class="comment">// We conjecture that less bias is created when the average of the two estimators</span></div> |
| <div class="line"><a name="l00398"></a><span class="lineno"> 398</span>  <span class="comment">// is compared with the threshold. Empirical measurements support this conjecture.</span></div> |
| <div class="line"><a name="l00399"></a><span class="lineno"> 399</span>  </div> |
| <div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> avgEst = (adjEst + linEst) / 2.0;</div> |
| <div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  </div> |
| <div class="line"><a name="l00402"></a><span class="lineno"> 402</span>  <span class="comment">// The following constants comes from empirical measurements of the crossover point</span></div> |
| <div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  <span class="comment">// between the average error of the linear estimator and the adjusted hll estimator</span></div> |
| <div class="line"><a name="l00404"></a><span class="lineno"> 404</span>  <span class="keywordtype">double</span> crossOver = 0.64;</div> |
| <div class="line"><a name="l00405"></a><span class="lineno"> 405</span>  <span class="keywordflow">if</span> (this->lgConfigK_ == 4) { crossOver = 0.718; }</div> |
| <div class="line"><a name="l00406"></a><span class="lineno"> 406</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (this->lgConfigK_ == 5) { crossOver = 0.672; }</div> |
| <div class="line"><a name="l00407"></a><span class="lineno"> 407</span>  </div> |
| <div class="line"><a name="l00408"></a><span class="lineno"> 408</span>  <span class="keywordflow">return</span> (avgEst > (crossOver * (1 << this->lgConfigK_))) ? adjEst : linEst;</div> |
| <div class="line"><a name="l00409"></a><span class="lineno"> 409</span> }</div> |
| <div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  </div> |
| <div class="line"><a name="l00411"></a><span class="lineno"> 411</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00412"></a><span class="lineno"> 412</span> <span class="keywordtype">double</span> HllArray<A>::getKxQ0()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keywordflow">return</span> kxq0_;</div> |
| <div class="line"><a name="l00414"></a><span class="lineno"> 414</span> }</div> |
| <div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  </div> |
| <div class="line"><a name="l00416"></a><span class="lineno"> 416</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00417"></a><span class="lineno"> 417</span> <span class="keywordtype">double</span> HllArray<A>::getKxQ1()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <span class="keywordflow">return</span> kxq1_;</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>  </div> |
| <div class="line"><a name="l00421"></a><span class="lineno"> 421</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00422"></a><span class="lineno"> 422</span> <span class="keywordtype">double</span> HllArray<A>::getHipAccum()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <span class="keywordflow">return</span> hipAccum_;</div> |
| <div class="line"><a name="l00424"></a><span class="lineno"> 424</span> }</div> |
| <div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  </div> |
| <div class="line"><a name="l00426"></a><span class="lineno"> 426</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00427"></a><span class="lineno"> 427</span> uint8_t HllArray<A>::getCurMin()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  <span class="keywordflow">return</span> curMin_;</div> |
| <div class="line"><a name="l00429"></a><span class="lineno"> 429</span> }</div> |
| <div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  </div> |
| <div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00432"></a><span class="lineno"> 432</span> uint32_t HllArray<A>::getNumAtCurMin()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  <span class="keywordflow">return</span> numAtCurMin_;</div> |
| <div class="line"><a name="l00434"></a><span class="lineno"> 434</span> }</div> |
| <div class="line"><a name="l00435"></a><span class="lineno"> 435</span>  </div> |
| <div class="line"><a name="l00436"></a><span class="lineno"> 436</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00437"></a><span class="lineno"> 437</span> <span class="keywordtype">void</span> HllArray<A>::putKxQ0(<span class="keywordtype">double</span> kxq0) {</div> |
| <div class="line"><a name="l00438"></a><span class="lineno"> 438</span>  kxq0_ = kxq0;</div> |
| <div class="line"><a name="l00439"></a><span class="lineno"> 439</span> }</div> |
| <div class="line"><a name="l00440"></a><span class="lineno"> 440</span>  </div> |
| <div class="line"><a name="l00441"></a><span class="lineno"> 441</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="keywordtype">void</span> HllArray<A>::putKxQ1(<span class="keywordtype">double</span> kxq1) {</div> |
| <div class="line"><a name="l00443"></a><span class="lineno"> 443</span>  kxq1_ = kxq1;</div> |
| <div class="line"><a name="l00444"></a><span class="lineno"> 444</span> }</div> |
| <div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  </div> |
| <div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00447"></a><span class="lineno"> 447</span> <span class="keywordtype">void</span> HllArray<A>::putHipAccum(<span class="keywordtype">double</span> hipAccum) {</div> |
| <div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  hipAccum_ = hipAccum;</div> |
| <div class="line"><a name="l00449"></a><span class="lineno"> 449</span> }</div> |
| <div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  </div> |
| <div class="line"><a name="l00451"></a><span class="lineno"> 451</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00452"></a><span class="lineno"> 452</span> <span class="keywordtype">void</span> HllArray<A>::putCurMin(uint8_t curMin) {</div> |
| <div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  curMin_ = curMin;</div> |
| <div class="line"><a name="l00454"></a><span class="lineno"> 454</span> }</div> |
| <div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  </div> |
| <div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00457"></a><span class="lineno"> 457</span> <span class="keywordtype">void</span> HllArray<A>::putNumAtCurMin(uint32_t numAtCurMin) {</div> |
| <div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  numAtCurMin_ = numAtCurMin;</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="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="keywordtype">bool</span> HllArray<A>::isCompact()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00464"></a><span class="lineno"> 464</span> }</div> |
| <div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  </div> |
| <div class="line"><a name="l00466"></a><span class="lineno"> 466</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00467"></a><span class="lineno"> 467</span> <span class="keywordtype">bool</span> HllArray<A>::isEmpty()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00468"></a><span class="lineno"> 468</span>  <span class="keyword">const</span> uint32_t configK = 1 << this->lgConfigK_;</div> |
| <div class="line"><a name="l00469"></a><span class="lineno"> 469</span>  <span class="keywordflow">return</span> (curMin_ == 0) && (numAtCurMin_ == configK);</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> A></div> |
| <div class="line"><a name="l00473"></a><span class="lineno"> 473</span> <span class="keywordtype">void</span> HllArray<A>::putOutOfOrderFlag(<span class="keywordtype">bool</span> flag) {</div> |
| <div class="line"><a name="l00474"></a><span class="lineno"> 474</span>  oooFlag_ = flag;</div> |
| <div class="line"><a name="l00475"></a><span class="lineno"> 475</span> }</div> |
| <div class="line"><a name="l00476"></a><span class="lineno"> 476</span>  </div> |
| <div class="line"><a name="l00477"></a><span class="lineno"> 477</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00478"></a><span class="lineno"> 478</span> <span class="keywordtype">bool</span> HllArray<A>::isOutOfOrderFlag()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00479"></a><span class="lineno"> 479</span>  <span class="keywordflow">return</span> oooFlag_;</div> |
| <div class="line"><a name="l00480"></a><span class="lineno"> 480</span> }</div> |
| <div class="line"><a name="l00481"></a><span class="lineno"> 481</span>  </div> |
| <div class="line"><a name="l00482"></a><span class="lineno"> 482</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00483"></a><span class="lineno"> 483</span> uint32_t HllArray<A>::hllArrBytes(target_hll_type tgtHllType, uint8_t lgConfigK) {</div> |
| <div class="line"><a name="l00484"></a><span class="lineno"> 484</span>  <span class="keywordflow">switch</span> (tgtHllType) {</div> |
| <div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  <span class="keywordflow">case</span> <a class="code" href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4aebdac6704039b95d8b82629cda14b1b9">HLL_4</a>:</div> |
| <div class="line"><a name="l00486"></a><span class="lineno"> 486</span>  <span class="keywordflow">return</span> hll4ArrBytes(lgConfigK);</div> |
| <div class="line"><a name="l00487"></a><span class="lineno"> 487</span>  <span class="keywordflow">case</span> <a class="code" href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4a0a2179d612c2ce6887e96279f25d7a77">HLL_6</a>:</div> |
| <div class="line"><a name="l00488"></a><span class="lineno"> 488</span>  <span class="keywordflow">return</span> hll6ArrBytes(lgConfigK);</div> |
| <div class="line"><a name="l00489"></a><span class="lineno"> 489</span>  <span class="keywordflow">case</span> <a class="code" href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4a3a5efa79623d3e2ab53f27ef53237c7f">HLL_8</a>:</div> |
| <div class="line"><a name="l00490"></a><span class="lineno"> 490</span>  <span class="keywordflow">return</span> hll8ArrBytes(lgConfigK);</div> |
| <div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keywordflow">default</span>:</div> |
| <div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">throw</span> std::invalid_argument(<span class="stringliteral">"Invalid target HLL type"</span>); </div> |
| <div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  }</div> |
| <div class="line"><a name="l00494"></a><span class="lineno"> 494</span> }</div> |
| <div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  </div> |
| <div class="line"><a name="l00496"></a><span class="lineno"> 496</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00497"></a><span class="lineno"> 497</span> uint32_t HllArray<A>::hll4ArrBytes(uint8_t lgConfigK) {</div> |
| <div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="keywordflow">return</span> 1 << (lgConfigK - 1);</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="l00501"></a><span class="lineno"> 501</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00502"></a><span class="lineno"> 502</span> uint32_t HllArray<A>::hll6ArrBytes(uint8_t lgConfigK) {</div> |
| <div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keyword">const</span> uint32_t numSlots = 1 << lgConfigK;</div> |
| <div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordflow">return</span> ((numSlots * 3) >> 2) + 1;</div> |
| <div class="line"><a name="l00505"></a><span class="lineno"> 505</span> }</div> |
| <div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  </div> |
| <div class="line"><a name="l00507"></a><span class="lineno"> 507</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00508"></a><span class="lineno"> 508</span> uint32_t HllArray<A>::hll8ArrBytes(uint8_t lgConfigK) {</div> |
| <div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  <span class="keywordflow">return</span> 1 << lgConfigK;</div> |
| <div class="line"><a name="l00510"></a><span class="lineno"> 510</span> }</div> |
| <div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  </div> |
| <div class="line"><a name="l00512"></a><span class="lineno"> 512</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00513"></a><span class="lineno"> 513</span> uint32_t HllArray<A>::getMemDataStart()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">return</span> hll_constants::HLL_BYTE_ARR_START;</div> |
| <div class="line"><a name="l00515"></a><span class="lineno"> 515</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="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00518"></a><span class="lineno"> 518</span> uint32_t HllArray<A>::getUpdatableSerializationBytes()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00519"></a><span class="lineno"> 519</span>  <span class="keywordflow">return</span> hll_constants::HLL_BYTE_ARR_START + getHllByteArrBytes();</div> |
| <div class="line"><a name="l00520"></a><span class="lineno"> 520</span> }</div> |
| <div class="line"><a name="l00521"></a><span class="lineno"> 521</span>  </div> |
| <div class="line"><a name="l00522"></a><span class="lineno"> 522</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00523"></a><span class="lineno"> 523</span> uint32_t HllArray<A>::getCompactSerializationBytes()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00524"></a><span class="lineno"> 524</span>  AuxHashMap<A>* auxHashMap = getAuxHashMap();</div> |
| <div class="line"><a name="l00525"></a><span class="lineno"> 525</span>  <span class="keyword">const</span> uint32_t auxCountBytes = ((auxHashMap == <span class="keyword">nullptr</span>) ? 0 : auxHashMap->getCompactSizeBytes());</div> |
| <div class="line"><a name="l00526"></a><span class="lineno"> 526</span>  <span class="keywordflow">return</span> hll_constants::HLL_BYTE_ARR_START + getHllByteArrBytes() + auxCountBytes;</div> |
| <div class="line"><a name="l00527"></a><span class="lineno"> 527</span> }</div> |
| <div class="line"><a name="l00528"></a><span class="lineno"> 528</span>  </div> |
| <div class="line"><a name="l00529"></a><span class="lineno"> 529</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00530"></a><span class="lineno"> 530</span> uint8_t HllArray<A>::getPreInts()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="keywordflow">return</span> hll_constants::HLL_PREINTS;</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>  </div> |
| <div class="line"><a name="l00534"></a><span class="lineno"> 534</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00535"></a><span class="lineno"> 535</span> AuxHashMap<A>* HllArray<A>::getAuxHashMap()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  <span class="keywordflow">return</span> <span class="keyword">nullptr</span>;</div> |
| <div class="line"><a name="l00537"></a><span class="lineno"> 537</span> }</div> |
| <div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  </div> |
| <div class="line"><a name="l00539"></a><span class="lineno"> 539</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00540"></a><span class="lineno"> 540</span> <span class="keyword">auto</span> HllArray<A>::getHllArray() const -> const vector_bytes& {</div> |
| <div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  <span class="keywordflow">return</span> hllByteArr_;</div> |
| <div class="line"><a name="l00542"></a><span class="lineno"> 542</span> }</div> |
| <div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  </div> |
| <div class="line"><a name="l00544"></a><span class="lineno"> 544</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00545"></a><span class="lineno"> 545</span> <span class="keywordtype">void</span> HllArray<A>::hipAndKxQIncrementalUpdate(uint8_t oldValue, uint8_t newValue) {</div> |
| <div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  <span class="keyword">const</span> uint32_t configK = 1 << this->getLgConfigK();</div> |
| <div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  <span class="comment">// update hip BEFORE updating kxq</span></div> |
| <div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  <span class="keywordflow">if</span> (!oooFlag_) hipAccum_ += configK / (kxq0_ + kxq1_);</div> |
| <div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  <span class="comment">// update kxq0 and kxq1; subtract first, then add</span></div> |
| <div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  <span class="keywordflow">if</span> (oldValue < 32) { kxq0_ -= INVERSE_POWERS_OF_2[oldValue]; }</div> |
| <div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  <span class="keywordflow">else</span> { kxq1_ -= INVERSE_POWERS_OF_2[oldValue]; }</div> |
| <div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="keywordflow">if</span> (newValue < 32) { kxq0_ += INVERSE_POWERS_OF_2[newValue]; }</div> |
| <div class="line"><a name="l00553"></a><span class="lineno"> 553</span>  <span class="keywordflow">else</span> { kxq1_ += INVERSE_POWERS_OF_2[newValue]; }</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>  </div> |
| <div class="line"><a name="l00561"></a><span class="lineno"> 561</span> <span class="comment">//In C: again-two-registers.c hhb_get_improved_linear_counting_estimate L1274</span></div> |
| <div class="line"><a name="l00562"></a><span class="lineno"> 562</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00563"></a><span class="lineno"> 563</span> <span class="keywordtype">double</span> HllArray<A>::getHllBitMapEstimate()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00564"></a><span class="lineno"> 564</span>  <span class="keyword">const</span> uint32_t configK = 1 << this->lgConfigK_;</div> |
| <div class="line"><a name="l00565"></a><span class="lineno"> 565</span>  <span class="keyword">const</span> uint32_t numUnhitBuckets = curMin_ == 0 ? numAtCurMin_ : 0;</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>  <span class="comment">//This will eventually go away.</span></div> |
| <div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="keywordflow">if</span> (numUnhitBuckets == 0) {</div> |
| <div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordflow">return</span> configK * log(configK / 0.5);</div> |
| <div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  }</div> |
| <div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  </div> |
| <div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <span class="keyword">const</span> uint32_t numHitBuckets = configK - numUnhitBuckets;</div> |
| <div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  <span class="keywordflow">return</span> HarmonicNumbers<A>::getBitMapEstimate(configK, numHitBuckets);</div> |
| <div class="line"><a name="l00574"></a><span class="lineno"> 574</span> }</div> |
| <div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  </div> |
| <div class="line"><a name="l00576"></a><span class="lineno"> 576</span> <span class="comment">//In C: again-two-registers.c hhb_get_raw_estimate L1167</span></div> |
| <div class="line"><a name="l00577"></a><span class="lineno"> 577</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00578"></a><span class="lineno"> 578</span> <span class="keywordtype">double</span> HllArray<A>::getHllRawEstimate()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  <span class="keyword">const</span> uint32_t configK = 1 << this->lgConfigK_;</div> |
| <div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  <span class="keywordtype">double</span> correctionFactor;</div> |
| <div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <span class="keywordflow">if</span> (this->lgConfigK_ == 4) { correctionFactor = 0.673; }</div> |
| <div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (this->lgConfigK_ == 5) { correctionFactor = 0.697; }</div> |
| <div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  <span class="keywordflow">else</span> <span class="keywordflow">if</span> (this->lgConfigK_ == 6) { correctionFactor = 0.709; }</div> |
| <div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="keywordflow">else</span> { correctionFactor = 0.7213 / (1.0 + (1.079 / configK)); }</div> |
| <div class="line"><a name="l00585"></a><span class="lineno"> 585</span>  <span class="keyword">const</span> <span class="keywordtype">double</span> hyperEst = (correctionFactor * configK * configK) / (kxq0_ + kxq1_);</div> |
| <div class="line"><a name="l00586"></a><span class="lineno"> 586</span>  <span class="keywordflow">return</span> hyperEst;</div> |
| <div class="line"><a name="l00587"></a><span class="lineno"> 587</span> }</div> |
| <div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  </div> |
| <div class="line"><a name="l00589"></a><span class="lineno"> 589</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00590"></a><span class="lineno"> 590</span> <span class="keywordtype">void</span> HllArray<A>::setRebuildKxqCurminFlag(<span class="keywordtype">bool</span> rebuild) {</div> |
| <div class="line"><a name="l00591"></a><span class="lineno"> 591</span>  rebuild_kxq_curmin_ = rebuild;</div> |
| <div class="line"><a name="l00592"></a><span class="lineno"> 592</span> }</div> |
| <div class="line"><a name="l00593"></a><span class="lineno"> 593</span>  </div> |
| <div class="line"><a name="l00594"></a><span class="lineno"> 594</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00595"></a><span class="lineno"> 595</span> <span class="keywordtype">bool</span> HllArray<A>::isRebuildKxqCurminFlag()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00596"></a><span class="lineno"> 596</span>  <span class="keywordflow">return</span> rebuild_kxq_curmin_;</div> |
| <div class="line"><a name="l00597"></a><span class="lineno"> 597</span> }</div> |
| <div class="line"><a name="l00598"></a><span class="lineno"> 598</span>  </div> |
| <div class="line"><a name="l00599"></a><span class="lineno"> 599</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00600"></a><span class="lineno"> 600</span> <span class="keywordtype">void</span> HllArray<A>::check_rebuild_kxq_cur_min() {</div> |
| <div class="line"><a name="l00601"></a><span class="lineno"> 601</span>  <span class="keywordflow">if</span> (!rebuild_kxq_curmin_) { <span class="keywordflow">return</span>; }</div> |
| <div class="line"><a name="l00602"></a><span class="lineno"> 602</span>  </div> |
| <div class="line"><a name="l00603"></a><span class="lineno"> 603</span>  uint8_t cur_min = 64;</div> |
| <div class="line"><a name="l00604"></a><span class="lineno"> 604</span>  uint32_t num_at_cur_min = 0;</div> |
| <div class="line"><a name="l00605"></a><span class="lineno"> 605</span>  <span class="keywordtype">double</span> kxq0 = 1 << this->lgConfigK_;</div> |
| <div class="line"><a name="l00606"></a><span class="lineno"> 606</span>  <span class="keywordtype">double</span> kxq1 = 0;</div> |
| <div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  </div> |
| <div class="line"><a name="l00608"></a><span class="lineno"> 608</span>  <span class="keyword">auto</span> it = this->begin(<span class="keyword">true</span>); <span class="comment">// want all points to adjust cur_min</span></div> |
| <div class="line"><a name="l00609"></a><span class="lineno"> 609</span>  <span class="keyword">const</span> <span class="keyword">auto</span> end = this->end();</div> |
| <div class="line"><a name="l00610"></a><span class="lineno"> 610</span>  <span class="keywordflow">while</span> (it != end) {</div> |
| <div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  uint8_t v = HllUtil<A>::getValue(*it);</div> |
| <div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">if</span> (v > 0) {</div> |
| <div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  <span class="keywordflow">if</span> (v < 32) { kxq0 += INVERSE_POWERS_OF_2[v] - 1.0; }</div> |
| <div class="line"><a name="l00614"></a><span class="lineno"> 614</span>  <span class="keywordflow">else</span> { kxq1 += INVERSE_POWERS_OF_2[v] - 1.0; }</div> |
| <div class="line"><a name="l00615"></a><span class="lineno"> 615</span>  }</div> |
| <div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordflow">if</span> (v > cur_min) { ++it; <span class="keywordflow">continue</span>; }</div> |
| <div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordflow">if</span> (v < cur_min) {</div> |
| <div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  cur_min = v;</div> |
| <div class="line"><a name="l00619"></a><span class="lineno"> 619</span>  num_at_cur_min = 1;</div> |
| <div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  ++num_at_cur_min;</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>  ++it;</div> |
| <div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  }</div> |
| <div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  </div> |
| <div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  kxq0_ = kxq0;</div> |
| <div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  kxq1_ = kxq1;</div> |
| <div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  curMin_ = cur_min;</div> |
| <div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  numAtCurMin_ = num_at_cur_min;</div> |
| <div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  rebuild_kxq_curmin_ = <span class="keyword">false</span>;</div> |
| <div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  <span class="comment">// HipAccum is not affected</span></div> |
| <div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  </div> |
| <div class="line"><a name="l00633"></a><span class="lineno"> 633</span> }</div> |
| <div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  </div> |
| <div class="line"><a name="l00635"></a><span class="lineno"> 635</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00636"></a><span class="lineno"> 636</span> <span class="keyword">typename</span> HllArray<A>::const_iterator HllArray<A>::begin(<span class="keywordtype">bool</span> all)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00637"></a><span class="lineno"> 637</span>  <span class="keywordflow">return</span> const_iterator(hllByteArr_.data(), 1 << this->lgConfigK_, 0, this->tgtHllType_, <span class="keyword">nullptr</span>, 0, all);</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>  </div> |
| <div class="line"><a name="l00640"></a><span class="lineno"> 640</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00641"></a><span class="lineno"> 641</span> <span class="keyword">typename</span> HllArray<A>::const_iterator HllArray<A>::end()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00642"></a><span class="lineno"> 642</span>  <span class="keywordflow">return</span> const_iterator(hllByteArr_.data(), 1 << this->lgConfigK_, 1 << this->lgConfigK_, this->tgtHllType_, <span class="keyword">nullptr</span>, 0, <span class="keyword">false</span>);</div> |
| <div class="line"><a name="l00643"></a><span class="lineno"> 643</span> }</div> |
| <div class="line"><a name="l00644"></a><span class="lineno"> 644</span>  </div> |
| <div class="line"><a name="l00645"></a><span class="lineno"> 645</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00646"></a><span class="lineno"> 646</span> HllArray<A>::const_iterator::const_iterator(<span class="keyword">const</span> uint8_t* array, uint32_t array_size, uint32_t index, target_hll_type hll_type, <span class="keyword">const</span> AuxHashMap<A>* exceptions, uint8_t offset, <span class="keywordtype">bool</span> all):</div> |
| <div class="line"><a name="l00647"></a><span class="lineno"> 647</span> array_(array), array_size_(array_size), index_(index), hll_type_(hll_type), exceptions_(exceptions), offset_(offset), all_(all)</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="keywordflow">while</span> (index_ < array_size_) {</div> |
| <div class="line"><a name="l00650"></a><span class="lineno"> 650</span>  value_ = get_value(array_, index_, hll_type_, exceptions_, offset_);</div> |
| <div class="line"><a name="l00651"></a><span class="lineno"> 651</span>  <span class="keywordflow">if</span> (all_ || value_ != hll_constants::EMPTY) <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00652"></a><span class="lineno"> 652</span>  ++index_;</div> |
| <div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  }</div> |
| <div class="line"><a name="l00654"></a><span class="lineno"> 654</span> }</div> |
| <div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  </div> |
| <div class="line"><a name="l00656"></a><span class="lineno"> 656</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00657"></a><span class="lineno"> 657</span> <span class="keyword">typename</span> HllArray<A>::const_iterator& HllArray<A>::const_iterator::operator++() {</div> |
| <div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="keywordflow">while</span> (++index_ < array_size_) {</div> |
| <div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  value_ = get_value(array_, index_, hll_type_, exceptions_, offset_);</div> |
| <div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  <span class="keywordflow">if</span> (all_ || value_ != hll_constants::EMPTY) <span class="keywordflow">break</span>;</div> |
| <div class="line"><a name="l00661"></a><span class="lineno"> 661</span>  }</div> |
| <div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="keywordflow">return</span> *<span class="keyword">this</span>;</div> |
| <div class="line"><a name="l00663"></a><span class="lineno"> 663</span> }</div> |
| <div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  </div> |
| <div class="line"><a name="l00665"></a><span class="lineno"> 665</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00666"></a><span class="lineno"> 666</span> <span class="keywordtype">bool</span> HllArray<A>::const_iterator::operator!=(<span class="keyword">const</span> const_iterator& other)<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="keywordflow">return</span> index_ != other.index_;</div> |
| <div class="line"><a name="l00668"></a><span class="lineno"> 668</span> }</div> |
| <div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  </div> |
| <div class="line"><a name="l00670"></a><span class="lineno"> 670</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00671"></a><span class="lineno"> 671</span> <span class="keyword">auto</span> HllArray<A>::const_iterator::operator*() const -> reference {</div> |
| <div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="keywordflow">return</span> HllUtil<A>::pair(index_, value_);</div> |
| <div class="line"><a name="l00673"></a><span class="lineno"> 673</span> }</div> |
| <div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  </div> |
| <div class="line"><a name="l00675"></a><span class="lineno"> 675</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00676"></a><span class="lineno"> 676</span> uint8_t HllArray<A>::const_iterator::get_value(<span class="keyword">const</span> uint8_t* array, uint32_t index, target_hll_type hll_type, <span class="keyword">const</span> AuxHashMap<A>* exceptions, uint8_t offset) {</div> |
| <div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  <span class="comment">// TODO: we should be able to improve efficiency here by reading multiple bytes at a time</span></div> |
| <div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  <span class="comment">// for HLL4 and HLL6</span></div> |
| <div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  <span class="keywordflow">if</span> (hll_type == target_hll_type::HLL_4) {</div> |
| <div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  uint8_t value = array[index >> 1];</div> |
| <div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  <span class="keywordflow">if</span> ((index & 1) > 0) { <span class="comment">// odd</span></div> |
| <div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  value >>= 4;</div> |
| <div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  } <span class="keywordflow">else</span> {</div> |
| <div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  value &= hll_constants::loNibbleMask;</div> |
| <div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  }</div> |
| <div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  <span class="keywordflow">if</span> (value == hll_constants::AUX_TOKEN) { <span class="comment">// exception</span></div> |
| <div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  <span class="keywordflow">return</span> exceptions->mustFindValueFor(index);</div> |
| <div class="line"><a name="l00688"></a><span class="lineno"> 688</span>  }</div> |
| <div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  <span class="keywordflow">return</span> value + offset;</div> |
| <div class="line"><a name="l00690"></a><span class="lineno"> 690</span>  } <span class="keywordflow">else</span> <span class="keywordflow">if</span> (hll_type == target_hll_type::HLL_6) {</div> |
| <div class="line"><a name="l00691"></a><span class="lineno"> 691</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> start_bit = index * 6;</div> |
| <div class="line"><a name="l00692"></a><span class="lineno"> 692</span>  <span class="keyword">const</span> uint8_t shift = start_bit & 0x7;</div> |
| <div class="line"><a name="l00693"></a><span class="lineno"> 693</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> byte_idx = start_bit >> 3;</div> |
| <div class="line"><a name="l00694"></a><span class="lineno"> 694</span>  <span class="keyword">const</span> uint16_t two_byte_val = (array[byte_idx + 1] << 8) | array[byte_idx];</div> |
| <div class="line"><a name="l00695"></a><span class="lineno"> 695</span>  <span class="keywordflow">return</span> (two_byte_val >> shift) & hll_constants::VAL_MASK_6;</div> |
| <div class="line"><a name="l00696"></a><span class="lineno"> 696</span>  }</div> |
| <div class="line"><a name="l00697"></a><span class="lineno"> 697</span>  <span class="comment">// HLL_8</span></div> |
| <div class="line"><a name="l00698"></a><span class="lineno"> 698</span>  <span class="keywordflow">return</span> array[index];</div> |
| <div class="line"><a name="l00699"></a><span class="lineno"> 699</span> }</div> |
| <div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  </div> |
| <div class="line"><a name="l00701"></a><span class="lineno"> 701</span> <span class="keyword">template</span><<span class="keyword">typename</span> A></div> |
| <div class="line"><a name="l00702"></a><span class="lineno"> 702</span> A HllArray<A>::getAllocator()<span class="keyword"> const </span>{</div> |
| <div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keywordflow">return</span> hllByteArr_.get_allocator();</div> |
| <div class="line"><a name="l00704"></a><span class="lineno"> 704</span> }</div> |
| <div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  </div> |
| <div class="line"><a name="l00706"></a><span class="lineno"> 706</span> }</div> |
| <div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  </div> |
| <div class="line"><a name="l00708"></a><span class="lineno"> 708</span> <span class="preprocessor">#endif </span><span class="comment">// _HLLARRAY_INTERNAL_HPP_</span></div> |
| <div class="ttc" id="anamespacedatasketches_html"><div class="ttname"><a href="namespacedatasketches.html">datasketches</a></div><div class="ttdoc">DataSketches namespace.</div><div class="ttdef"><b>Definition:</b> binomial_bounds.hpp:38</div></div> |
| <div class="ttc" id="anamespacedatasketches_html_a76c1ad9235877691984d49415bb263e4"><div class="ttname"><a href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4">datasketches::target_hll_type</a></div><div class="ttdeci">target_hll_type</div><div class="ttdoc">Specifies the target type of HLL sketch to be created.</div><div class="ttdef"><b>Definition:</b> hll.hpp:72</div></div> |
| <div class="ttc" id="anamespacedatasketches_html_a76c1ad9235877691984d49415bb263e4a0a2179d612c2ce6887e96279f25d7a77"><div class="ttname"><a href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4a0a2179d612c2ce6887e96279f25d7a77">datasketches::HLL_6</a></div><div class="ttdeci">@ HLL_6</div><div class="ttdoc">6 bits per entry (fixed size)</div><div class="ttdef"><b>Definition:</b> hll.hpp:74</div></div> |
| <div class="ttc" id="anamespacedatasketches_html_a76c1ad9235877691984d49415bb263e4a3a5efa79623d3e2ab53f27ef53237c7f"><div class="ttname"><a href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4a3a5efa79623d3e2ab53f27ef53237c7f">datasketches::HLL_8</a></div><div class="ttdeci">@ HLL_8</div><div class="ttdoc">8 bits per entry (fastest, fixed size)</div><div class="ttdef"><b>Definition:</b> hll.hpp:75</div></div> |
| <div class="ttc" id="anamespacedatasketches_html_a76c1ad9235877691984d49415bb263e4aebdac6704039b95d8b82629cda14b1b9"><div class="ttname"><a href="namespacedatasketches.html#a76c1ad9235877691984d49415bb263e4aebdac6704039b95d8b82629cda14b1b9">datasketches::HLL_4</a></div><div class="ttdeci">@ HLL_4</div><div class="ttdoc">4 bits per entry (most compact, size may vary)</div><div class="ttdef"><b>Definition:</b> hll.hpp:73</div></div> |
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