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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"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment"> * This source code is licensed under the BSD+Patents license found in the</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> <span class="comment"> * LICENSE file in the root directory of this source tree.</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// -*- c -*-</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#ifndef FAISS_AUX_INDEX_STRUCTURES_C_H</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor"></span><span class="preprocessor">#define FAISS_AUX_INDEX_STRUCTURES_C_H</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "Index_c.h"</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> <span class="preprocessor">#include "faiss_c.h"</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> </div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor"></span><span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> FAISS_DECLARE_CLASS(RangeSearchResult)</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> </div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> FAISS_DECLARE_GETTER(RangeSearchResult, <span class="keywordtype">size_t</span>, nq)</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> </div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="keywordtype">int</span> faiss_RangeSearchResult_new(FaissRangeSearchResult** p_rsr, idx_t nq);</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> </div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="keywordtype">int</span> faiss_RangeSearchResult_new_with(FaissRangeSearchResult** p_rsr, idx_t nq, <span class="keywordtype">int</span> alloc_lims);</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="comment"></span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="comment">/// called when lims contains the nb of elements result entries</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="comment">/// for each query</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span> <span class="comment"></span><span class="keywordtype">int</span> faiss_RangeSearchResult_do_allocation(FaissRangeSearchResult* rsr);</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span> </div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> FAISS_DECLARE_DESTRUCTOR(RangeSearchResult)</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="comment"></span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="comment">/// getter for buffer_size</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment"></span>FAISS_DECLARE_GETTER(RangeSearchResult, <span class="keywordtype">size_t</span>, buffer_size)</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"></span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment">/// getter for lims: size (nq + 1)</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"></span><span class="keywordtype">void</span> faiss_RangeSearchResult_lims(</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  FaissRangeSearchResult* rsr, <span class="keywordtype">size_t</span>** lims);</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"></span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment">/// getter for labels and respective distances (not sorted):</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment">/// result for query i is labels[lims[i]:lims[i+1]]</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"></span><span class="keywordtype">void</span> faiss_RangeSearchResult_labels(</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  FaissRangeSearchResult* rsr, idx_t** labels, <span class="keywordtype">float</span>** distances);</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"></span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment">/** Encapsulates a set of ids to remove. */</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> FAISS_DECLARE_CLASS(IDSelector)</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> FAISS_DECLARE_DESTRUCTOR(IDSelector)</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="keywordtype">int</span> faiss_IDSelector_is_member(const FaissIDSelector* sel, idx_t <span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"></span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment">/** remove ids between [imni, imax) */</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> FAISS_DECLARE_CLASS(IDSelectorRange)</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> FAISS_DECLARE_DESTRUCTOR(IDSelectorRange)</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> </div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> FAISS_DECLARE_GETTER(IDSelectorRange, idx_t, imin)</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> FAISS_DECLARE_GETTER(IDSelectorRange, idx_t, imax)</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="keywordtype">int</span> faiss_IDSelectorRange_new(FaissIDSelectorRange** p_sel, idx_t imin, idx_t imax);</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"></span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment">/** Remove ids from a set. Repetitions of ids in the indices set</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * passed to the constructor does not hurt performance. The hash</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> * function used for the bloom filter and GCC's implementation of</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * unordered_set are just the least significant bits of the id. This</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * works fine for random ids or ids in sequences but will produce many</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> * hash collisions if lsb's are always the same */</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> FAISS_DECLARE_CLASS(IDSelectorBatch)</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> FAISS_DECLARE_GETTER(IDSelectorBatch, <span class="keywordtype">int</span>, nbits)</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> FAISS_DECLARE_GETTER(IDSelectorBatch, idx_t, mask)</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keywordtype">int</span> faiss_IDSelectorBatch_new(FaissIDSelectorBatch** p_sel, <span class="keywordtype">long</span> n, const idx_t* indices);</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span> </div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> <span class="comment">// Below are structures used only by Index implementations</span></div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> <span class="comment"></span></div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> <span class="comment">/** List of temporary buffers used to store results before they are</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span> <span class="comment"> * copied to the RangeSearchResult object. */</span></div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> FAISS_DECLARE_CLASS(BufferList)</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> FAISS_DECLARE_DESTRUCTOR(BufferList)</div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> FAISS_DECLARE_GETTER(BufferList, <span class="keywordtype">size_t</span>, buffer_size)</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> FAISS_DECLARE_GETTER(BufferList, <span class="keywordtype">size_t</span>, wp)</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span> </div>
<div class="line"><a name="l00087"></a><span class="lineno"><a class="line" href="structFaissBuffer.html"> 87</a></span> typedef struct <a class="code" href="structFaissBuffer.html">FaissBuffer</a> {</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  idx_t *ids;</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>  <span class="keywordtype">float</span> *dis;</div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> } <a class="code" href="structFaissBuffer.html">FaissBuffer</a>;</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> <span class="keywordtype">int</span> faiss_BufferList_append_buffer(FaissBufferList* bl);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="keywordtype">int</span> faiss_BufferList_new(FaissBufferList** p_bl, <span class="keywordtype">size_t</span> buffer_size);</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <span class="keywordtype">int</span> faiss_BufferList_add(FaissBufferList* bl, idx_t <span class="keywordtype">id</span>, <span class="keywordtype">float</span> dis);</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> <span class="comment"></span></div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> <span class="comment">/// copy elemnts ofs:ofs+n-1 seen as linear data in the buffers to</span></div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="comment">/// tables dest_ids, dest_dis</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="comment"></span><span class="keywordtype">int</span> faiss_BufferList_copy_range(</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  FaissBufferList* bl, <span class="keywordtype">size_t</span> ofs, <span class="keywordtype">size_t</span> n, idx_t *dest_ids, <span class="keywordtype">float</span> *dest_dis);</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="comment"></span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="comment">/// the entries in the buffers are split per query</span></div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="comment"></span>FAISS_DECLARE_CLASS(RangeSearchPartialResult)</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> FAISS_DECLARE_GETTER(RangeSearchPartialResult, FaissRangeSearchResult*, res)</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> <span class="keywordtype">int</span> faiss_RangeSearchPartialResult_new(</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  FaissRangeSearchPartialResult** p_res, FaissRangeSearchResult* res_in);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> </div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">int</span> faiss_RangeSearchPartialResult_finalize(</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  FaissRangeSearchPartialResult* res);</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span> <span class="comment"></span></div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="comment">/// called by range_search before do_allocation</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="comment"></span><span class="keywordtype">int</span> faiss_RangeSearchPartialResult_set_lims(</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  FaissRangeSearchPartialResult* res);</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> <span class="comment"></span></div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> <span class="comment">/// called by range_search after do_allocation</span></div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="comment"></span><span class="keywordtype">int</span> faiss_RangeSearchPartialResult_set_result(</div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  FaissRangeSearchPartialResult* res, <span class="keywordtype">int</span> incremental);</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="comment"></span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="comment">/// result structure for a single query</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="comment"></span>FAISS_DECLARE_CLASS(QueryResult)</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> FAISS_DECLARE_GETTER(QueryResult, idx_t, qno)</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> FAISS_DECLARE_GETTER(QueryResult, <span class="keywordtype">size_t</span>, nres)</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> FAISS_DECLARE_GETTER(QueryResult, FaissRangeSearchPartialResult*, pres)</div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> </div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="keywordtype">int</span> faiss_RangeSearchPartialResult_new_result(</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  FaissRangeSearchPartialResult* res, idx_t qno, FaissQueryResult** qr);</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> <span class="keywordtype">int</span> faiss_QueryResult_add(FaissQueryResult* qr, <span class="keywordtype">float</span> dis, idx_t <span class="keywordtype">id</span>);</div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> </div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="preprocessor">#ifdef __cplusplus</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="preprocessor"></span>}</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor"></span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor">#endif</span></div>
<div class="ttc" id="structFaissBuffer_html"><div class="ttname"><a href="structFaissBuffer.html">FaissBuffer</a></div><div class="ttdef"><b>Definition:</b> <a href="AuxIndexStructures__c_8h_source.html#l00087">AuxIndexStructures_c.h:87</a></div></div>
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