2017-02-23 06:26:44 +08:00
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
< html xmlns = "http://www.w3.org/1999/xhtml" >
< head >
< meta http-equiv = "Content-Type" content = "text/xhtml;charset=UTF-8" / >
< meta http-equiv = "X-UA-Compatible" content = "IE=9" / >
< meta name = "generator" content = "Doxygen 1.8.5" / >
2018-12-20 00:48:35 +08:00
< title > Faiss: /tmp/faiss/hamming.h Source File< / title >
2017-02-23 06:26:44 +08:00
< link href = "tabs.css" rel = "stylesheet" type = "text/css" / >
< script type = "text/javascript" src = "jquery.js" > < / script >
< script type = "text/javascript" src = "dynsections.js" > < / script >
< link href = "search/search.css" rel = "stylesheet" type = "text/css" / >
< script type = "text/javascript" src = "search/search.js" > < / script >
< script type = "text/javascript" >
$(document).ready(function() { searchBox.OnSelectItem(0); });
< / script >
< link href = "doxygen.css" rel = "stylesheet" type = "text/css" / >
< / head >
< body >
< div id = "top" > <!-- do not remove this div, it is closed by doxygen! -->
< div id = "titlearea" >
< table cellspacing = "0" cellpadding = "0" >
< tbody >
< tr style = "height: 56px;" >
< td style = "padding-left: 0.5em;" >
< div id = "projectname" > Faiss
< / div >
< / td >
< / tr >
< / tbody >
< / table >
< / div >
<!-- end header part -->
<!-- Generated by Doxygen 1.8.5 -->
< script type = "text/javascript" >
var searchBox = new SearchBox("searchBox", "search",false,'Search');
< / script >
< div id = "navrow1" class = "tabs" >
< ul class = "tablist" >
< li > < a href = "index.html" > < span > Main  Page< / span > < / a > < / li >
< li > < a href = "namespaces.html" > < span > Namespaces< / span > < / a > < / li >
< li > < a href = "annotated.html" > < span > Classes< / span > < / a > < / li >
< li class = "current" > < a href = "files.html" > < span > Files< / span > < / a > < / li >
< li >
< div id = "MSearchBox" class = "MSearchBoxInactive" >
< span class = "left" >
< img id = "MSearchSelect" src = "search/mag_sel.png"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
alt=""/>
< input type = "text" id = "MSearchField" value = "Search" accesskey = "S"
onfocus="searchBox.OnSearchFieldFocus(true)"
onblur="searchBox.OnSearchFieldFocus(false)"
onkeyup="searchBox.OnSearchFieldChange(event)"/>
< / span > < span class = "right" >
< a id = "MSearchClose" href = "javascript:searchBox.CloseResultsWindow()" > < img id = "MSearchCloseImg" border = "0" src = "search/close.png" alt = "" / > < / a >
< / span >
< / div >
< / li >
< / ul >
< / div >
< div id = "navrow2" class = "tabs2" >
< ul class = "tablist" >
< li > < a href = "files.html" > < span > File  List< / span > < / a > < / li >
< / ul >
< / div >
< / div > <!-- top -->
<!-- window showing the filter options -->
< div id = "MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
< a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(0)" > < span class = "SelectionMark" >   < / span > All< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(1)" > < span class = "SelectionMark" >   < / span > Classes< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(2)" > < span class = "SelectionMark" >   < / span > Namespaces< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(3)" > < span class = "SelectionMark" >   < / span > Functions< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(4)" > < span class = "SelectionMark" >   < / span > Variables< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(5)" > < span class = "SelectionMark" >   < / span > Typedefs< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(6)" > < span class = "SelectionMark" >   < / span > Enumerations< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(7)" > < span class = "SelectionMark" >   < / span > Enumerator< / a > < a class = "SelectItem" href = "javascript:void(0)" onclick = "searchBox.OnSelectItem(8)" > < span class = "SelectionMark" >   < / span > Friends< / a > < / div >
<!-- iframe showing the search results (closed by default) -->
< div id = "MSearchResultsWindow" >
< iframe src = "javascript:void(0)" frameborder = "0"
name="MSearchResults" id="MSearchResults">
< / iframe >
< / div >
< div class = "header" >
< div class = "headertitle" >
2018-12-20 00:48:35 +08:00
< div class = "title" > /tmp/faiss/hamming.h< / div > < / div >
2017-02-23 06:26:44 +08:00
< / div > <!-- header -->
< div class = "contents" >
2017-06-21 21:54:28 +08:00
< 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 >
2017-07-30 15:18:45 +08:00
< 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 >
2017-06-21 21:54:28 +08:00
< 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 >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00009" > < / a > < span class = "lineno" > 9< / span >   < span class = "comment" > // -*- c++ -*-< / span > < / div >
< div class = "line" > < a name = "l00010" > < / a > < span class = "lineno" > 10< / span >   < / div >
< div class = "line" > < a name = "l00011" > < / a > < span class = "lineno" > 11< / span >   < span class = "comment" > /*< / span > < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00012" > < / a > < span class = "lineno" > 12< / span >   < span class = "comment" > * Hamming distances. The binary vector dimensionality should be a multiple< / span > < / div >
< div class = "line" > < a name = "l00013" > < / a > < span class = "lineno" > 13< / span >   < span class = "comment" > * of 64, as the elementary operations operate on words. If you really need< / span > < / div >
< div class = "line" > < a name = "l00014" > < / a > < span class = "lineno" > 14< / span >   < span class = "comment" > * other sizes, just pad with 0s (this is done by function fvecs2bitvecs).< / span > < / div >
< div class = "line" > < a name = "l00015" > < / a > < span class = "lineno" > 15< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00016" > < / a > < span class = "lineno" > 16< / span >   < span class = "comment" > * User-defined type hamdis_t is used for distances because at this time< / span > < / div >
< div class = "line" > < a name = "l00017" > < / a > < span class = "lineno" > 17< / span >   < span class = "comment" > * it is still uncler clear how we will need to balance< / span > < / div >
< div class = "line" > < a name = "l00018" > < / a > < span class = "lineno" > 18< / span >   < span class = "comment" > * - flexibility in vector size (may need 16- or even 8-bit vectors)< / span > < / div >
< div class = "line" > < a name = "l00019" > < / a > < span class = "lineno" > 19< / span >   < span class = "comment" > * - memory usage< / span > < / div >
< div class = "line" > < a name = "l00020" > < / a > < span class = "lineno" > 20< / span >   < span class = "comment" > * - cache-misses when dealing with large volumes of data (fewer bits is better)< / span > < / div >
< div class = "line" > < a name = "l00021" > < / a > < span class = "lineno" > 21< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00022" > < / a > < span class = "lineno" > 22< / span >   < span class = "comment" > * hamdis_t should optimally be compatibe with one of the Torch Storage< / span > < / div >
< div class = "line" > < a name = "l00023" > < / a > < span class = "lineno" > 23< / span >   < span class = "comment" > * (Byte,Short,Long) and therefore should be signed for 2-bytes and 4-bytes.< / span > < / div >
< div class = "line" > < a name = "l00024" > < / a > < span class = "lineno" > 24< / span >   < span class = "comment" > */< / span > < / 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 = "preprocessor" > #ifndef FAISS_hamming_h< / span > < / div >
< div class = "line" > < a name = "l00027" > < / a > < span class = "lineno" > 27< / span >   < span class = "preprocessor" > < / span > < span class = "preprocessor" > #define FAISS_hamming_h< / span > < / div >
< div class = "line" > < a name = "l00028" > < / a > < span class = "lineno" > 28< / span >   < span class = "preprocessor" > < / span > < / div >
< div class = "line" > < a name = "l00029" > < / a > < span class = "lineno" > 29< / span >   < / div >
< div class = "line" > < a name = "l00030" > < / a > < span class = "lineno" > 30< / span >   < span class = "preprocessor" > #include < stdint.h> < / span > < / div >
< div class = "line" > < a name = "l00031" > < / a > < span class = "lineno" > 31< / span >   < / div >
< div class = "line" > < a name = "l00032" > < / a > < span class = "lineno" > 32< / span >   < span class = "preprocessor" > #include " Heap.h" < / span > < / div >
< div class = "line" > < a name = "l00033" > < / a > < span class = "lineno" > 33< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00034" > < / a > < span class = "lineno" > 34< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00035" > < / a > < span class = "lineno" > 35< / span >   < span class = "comment" > /* The Hamming distance type should be exportable to Lua Tensor, which< / span > < / div >
< div class = "line" > < a name = "l00036" > < / a > < span class = "lineno" > 36< / span >   < span class = "comment" > excludes most unsigned type */< / span > < / div >
< div class = "line" > < a name = "l00037" > < / a > < span class = "lineno" > 37< / span >   < span class = "keyword" > typedef< / span > int32_t hamdis_t;< / div >
< div class = "line" > < a name = "l00038" > < / a > < span class = "lineno" > 38< / span >   < / div >
< div class = "line" > < a name = "l00039" > < / a > < span class = "lineno" > 39< / span >   < span class = "keyword" > namespace < / span > faiss {< / div >
< div class = "line" > < a name = "l00040" > < / a > < span class = "lineno" > 40< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00041" > < / a > < span class = "lineno" > 41< / span >   < / div >
< div class = "line" > < a name = "l00042" > < / a > < span class = "lineno" > 42< / span >   < span class = "keyword" > extern< / span > < span class = "keywordtype" > size_t< / span > hamming_batch_size;< / div >
< div class = "line" > < a name = "l00043" > < / a > < span class = "lineno" > 43< / span >   < / div >
< div class = "line" > < a name = "l00044" > < / a > < span class = "lineno" > 44< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > popcount64(uint64_t x) {< / div >
< div class = "line" > < a name = "l00045" > < / a > < span class = "lineno" > 45< / span >   < span class = "keywordflow" > return< / span > __builtin_popcountl(x);< / div >
< div class = "line" > < a name = "l00046" > < / a > < span class = "lineno" > 46< / span >   }< / 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" > /** Compute a set of Hamming distances between na and nb binary vectors< / span > < / div >
< div class = "line" > < a name = "l00050" > < / a > < span class = "lineno" > 50< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00051" > < / a > < span class = "lineno" > 51< / span >   < span class = "comment" > * @param a size na * nbytespercode< / span > < / div >
< div class = "line" > < a name = "l00052" > < / a > < span class = "lineno" > 52< / span >   < span class = "comment" > * @param b size nb * nbytespercode< / span > < / div >
< div class = "line" > < a name = "l00053" > < / a > < span class = "lineno" > 53< / span >   < span class = "comment" > * @param nbytespercode should be multiple of 8< / span > < / div >
< div class = "line" > < a name = "l00054" > < / a > < span class = "lineno" > 54< / span >   < span class = "comment" > * @param dis output distances, size na * nb< / span > < / div >
< div class = "line" > < a name = "l00055" > < / a > < span class = "lineno" > 55< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00056" > < / a > < span class = "lineno" > 56< / span >   < span class = "keywordtype" > void< / span > hammings (< / div >
< div class = "line" > < a name = "l00057" > < / a > < span class = "lineno" > 57< / span >   < span class = "keyword" > const< / span > uint8_t * a,< / div >
< div class = "line" > < a name = "l00058" > < / a > < span class = "lineno" > 58< / span >   < span class = "keyword" > const< / span > uint8_t * b,< / div >
< div class = "line" > < a name = "l00059" > < / a > < span class = "lineno" > 59< / span >   < span class = "keywordtype" > size_t< / span > na, < span class = "keywordtype" > size_t< / span > nb,< / div >
< div class = "line" > < a name = "l00060" > < / a > < span class = "lineno" > 60< / span >   < span class = "keywordtype" > size_t< / span > nbytespercode,< / div >
< div class = "line" > < a name = "l00061" > < / a > < span class = "lineno" > 61< / span >   hamdis_t * dis);< / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00062" > < / a > < span class = "lineno" > 62< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00063" > < / a > < span class = "lineno" > 63< / span >   < span class = "keywordtype" > void< / span > bitvec_print (< span class = "keyword" > const< / span > uint8_t * b, < span class = "keywordtype" > size_t< / span > d);< / 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 >   < / div >
< div class = "line" > < a name = "l00066" > < / a > < span class = "lineno" > 66< / span >   < span class = "comment" > /* Functions for casting vectors of regular types to compact bits.< / span > < / div >
< div class = "line" > < a name = "l00067" > < / a > < span class = "lineno" > 67< / span >   < span class = "comment" > They assume proper allocation done beforehand, meaning that b< / span > < / div >
< div class = "line" > < a name = "l00068" > < / a > < span class = "lineno" > 68< / span >   < span class = "comment" > should be be able to receive as many bits as x may produce. */< / span > < / div >
< div class = "line" > < a name = "l00069" > < / a > < span class = "lineno" > 69< / span >   < / div >
< div class = "line" > < a name = "l00070" > < / a > < span class = "lineno" > 70< / span >   < span class = "comment" > /* Makes an array of bits from the signs of a float array. The length< / span > < / div >
< div class = "line" > < a name = "l00071" > < / a > < span class = "lineno" > 71< / span >   < span class = "comment" > of the output array b is rounded up to byte size (allocate< / span > < / div >
< div class = "line" > < a name = "l00072" > < / a > < span class = "lineno" > 72< / span >   < span class = "comment" > accordingly) */< / span > < / div >
< div class = "line" > < a name = "l00073" > < / a > < span class = "lineno" > 73< / span >   < span class = "keywordtype" > void< / span > fvecs2bitvecs (< / div >
< div class = "line" > < a name = "l00074" > < / a > < span class = "lineno" > 74< / span >   < span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x,< / div >
< div class = "line" > < a name = "l00075" > < / a > < span class = "lineno" > 75< / span >   uint8_t * b,< / div >
< div class = "line" > < a name = "l00076" > < / a > < span class = "lineno" > 76< / span >   < span class = "keywordtype" > size_t< / span > d,< / div >
< div class = "line" > < a name = "l00077" > < / a > < span class = "lineno" > 77< / span >   < span class = "keywordtype" > size_t< / span > n);< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00078" > < / a > < span class = "lineno" > 78< / span >   < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00079" > < / a > < span class = "lineno" > 79< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00080" > < / a > < span class = "lineno" > 80< / span >   < span class = "keywordtype" > void< / span > fvec2bitvec (< span class = "keyword" > const< / span > < span class = "keywordtype" > float< / span > * x, uint8_t * b, < span class = "keywordtype" > size_t< / span > d);< / div >
< div class = "line" > < a name = "l00081" > < / a > < span class = "lineno" > 81< / span >   < / div >
< div class = "line" > < a name = "l00082" > < / a > < span class = "lineno" > 82< / span >   < / div >
< div class = "line" > < a name = "l00083" > < / a > < span class = "lineno" > 83< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00084" > < / a > < span class = "lineno" > 84< / span >   < span class = "comment" > /** Return the k smallest Hamming distances for a set of binary query vectors,< / span > < / div >
< div class = "line" > < a name = "l00085" > < / a > < span class = "lineno" > 85< / span >   < span class = "comment" > * using a max heap.< / span > < / div >
< div class = "line" > < a name = "l00086" > < / a > < span class = "lineno" > 86< / span >   < span class = "comment" > * @param a queries, size ha-> nh * ncodes< / span > < / div >
< div class = "line" > < a name = "l00087" > < / a > < span class = "lineno" > 87< / span >   < span class = "comment" > * @param b database, size nb * ncodes< / span > < / div >
< div class = "line" > < a name = "l00088" > < / a > < span class = "lineno" > 88< / span >   < span class = "comment" > * @param nb number of database vectors< / span > < / div >
< div class = "line" > < a name = "l00089" > < / a > < span class = "lineno" > 89< / span >   < span class = "comment" > * @param ncodes size of the binary codes (bytes)< / span > < / div >
< div class = "line" > < a name = "l00090" > < / a > < span class = "lineno" > 90< / span >   < span class = "comment" > * @param ordered if != 0: order the results by decreasing distance< / span > < / div >
< div class = "line" > < a name = "l00091" > < / a > < span class = "lineno" > 91< / span >   < span class = "comment" > * (may be bottleneck for k/n > 0.01) */< / span > < / div >
< div class = "line" > < a name = "l00092" > < / a > < span class = "lineno" > 92< / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "namespacefaiss.html#aef2e95991f435b0103db0efe07edff81" > hammings_knn_hc< / a > (< / div >
< div class = "line" > < a name = "l00093" > < / a > < span class = "lineno" > 93< / span >   int_maxheap_array_t * ha,< / div >
< div class = "line" > < a name = "l00094" > < / a > < span class = "lineno" > 94< / span >   < span class = "keyword" > const< / span > uint8_t * a,< / div >
< div class = "line" > < a name = "l00095" > < / a > < span class = "lineno" > 95< / span >   < span class = "keyword" > const< / span > uint8_t * b,< / div >
< div class = "line" > < a name = "l00096" > < / a > < span class = "lineno" > 96< / span >   < span class = "keywordtype" > size_t< / span > nb,< / div >
< div class = "line" > < a name = "l00097" > < / a > < span class = "lineno" > 97< / span >   < span class = "keywordtype" > size_t< / span > ncodes,< / div >
< div class = "line" > < a name = "l00098" > < / a > < span class = "lineno" > 98< / span >   < span class = "keywordtype" > int< / span > ordered);< / 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 = "comment" > /* Legacy alias to hammings_knn_hc. */< / span > < / div >
< div class = "line" > < a name = "l00101" > < / a > < span class = "lineno" > 101< / span >   < span class = "keywordtype" > void< / span > hammings_knn (< / div >
< div class = "line" > < a name = "l00102" > < / a > < span class = "lineno" > 102< / span >   int_maxheap_array_t * ha,< / div >
< div class = "line" > < a name = "l00103" > < / a > < span class = "lineno" > 103< / span >   < span class = "keyword" > const< / span > uint8_t * a,< / div >
< div class = "line" > < a name = "l00104" > < / a > < span class = "lineno" > 104< / span >   < span class = "keyword" > const< / span > uint8_t * b,< / div >
< div class = "line" > < a name = "l00105" > < / a > < span class = "lineno" > 105< / span >   < span class = "keywordtype" > size_t< / span > nb,< / div >
< div class = "line" > < a name = "l00106" > < / a > < span class = "lineno" > 106< / span >   < span class = "keywordtype" > size_t< / span > ncodes,< / div >
< div class = "line" > < a name = "l00107" > < / a > < span class = "lineno" > 107< / span >   < span class = "keywordtype" > int< / span > ordered);< / div >
< div class = "line" > < a name = "l00108" > < / a > < span class = "lineno" > 108< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00109" > < / a > < span class = "lineno" > 109< / span >   < span class = "comment" > /** Return the k smallest Hamming distances for a set of binary query vectors,< / span > < / div >
< div class = "line" > < a name = "l00110" > < / a > < span class = "lineno" > 110< / span >   < span class = "comment" > * using counting max.< / span > < / div >
< div class = "line" > < a name = "l00111" > < / a > < span class = "lineno" > 111< / span >   < span class = "comment" > * @param a queries, size na * ncodes< / span > < / div >
< div class = "line" > < a name = "l00112" > < / a > < span class = "lineno" > 112< / span >   < span class = "comment" > * @param b database, size nb * ncodes< / span > < / div >
< div class = "line" > < a name = "l00113" > < / a > < span class = "lineno" > 113< / span >   < span class = "comment" > * @param na number of query vectors< / span > < / div >
< div class = "line" > < a name = "l00114" > < / a > < span class = "lineno" > 114< / span >   < span class = "comment" > * @param nb number of database vectors< / span > < / div >
< div class = "line" > < a name = "l00115" > < / a > < span class = "lineno" > 115< / span >   < span class = "comment" > * @param k number of vectors/distances to return< / span > < / div >
< div class = "line" > < a name = "l00116" > < / a > < span class = "lineno" > 116< / span >   < span class = "comment" > * @param ncodes size of the binary codes (bytes)< / span > < / div >
< div class = "line" > < a name = "l00117" > < / a > < span class = "lineno" > 117< / span >   < span class = "comment" > * @param distances output distances from each query vector to its k nearest< / span > < / div >
< div class = "line" > < a name = "l00118" > < / a > < span class = "lineno" > 118< / span >   < span class = "comment" > * neighbors< / span > < / div >
< div class = "line" > < a name = "l00119" > < / a > < span class = "lineno" > 119< / span >   < span class = "comment" > * @param labels output ids of the k nearest neighbors to each query vector< / span > < / div >
< div class = "line" > < a name = "l00120" > < / a > < span class = "lineno" > 120< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00121" > < / a > < span class = "lineno" > 121< / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "namespacefaiss.html#aa9ac586642ba474949a007546ab05592" > hammings_knn_mc< / a > (< / div >
< div class = "line" > < a name = "l00122" > < / a > < span class = "lineno" > 122< / span >   < span class = "keyword" > const< / span > uint8_t * a,< / div >
< div class = "line" > < a name = "l00123" > < / a > < span class = "lineno" > 123< / span >   < span class = "keyword" > const< / span > uint8_t * b,< / div >
< div class = "line" > < a name = "l00124" > < / a > < span class = "lineno" > 124< / span >   < span class = "keywordtype" > size_t< / span > na,< / div >
< div class = "line" > < a name = "l00125" > < / a > < span class = "lineno" > 125< / span >   < span class = "keywordtype" > size_t< / span > nb,< / div >
< div class = "line" > < a name = "l00126" > < / a > < span class = "lineno" > 126< / span >   < span class = "keywordtype" > size_t< / span > k,< / div >
< div class = "line" > < a name = "l00127" > < / a > < span class = "lineno" > 127< / span >   < span class = "keywordtype" > size_t< / span > ncodes,< / div >
< div class = "line" > < a name = "l00128" > < / a > < span class = "lineno" > 128< / span >   int32_t *distances,< / div >
< div class = "line" > < a name = "l00129" > < / a > < span class = "lineno" > 129< / span >   < span class = "keywordtype" > long< / span > *labels);< / 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 = "comment" > /* Counting the number of matches or of cross-matches (without returning them)< / span > < / div >
< div class = "line" > < a name = "l00132" > < / a > < span class = "lineno" > 132< / span >   < span class = "comment" > For use with function that assume pre-allocated memory */< / span > < / div >
< div class = "line" > < a name = "l00133" > < / a > < span class = "lineno" > 133< / span >   < span class = "keywordtype" > void< / span > hamming_count_thres (< / div >
< div class = "line" > < a name = "l00134" > < / a > < span class = "lineno" > 134< / span >   < span class = "keyword" > const< / span > uint8_t * bs1,< / div >
< div class = "line" > < a name = "l00135" > < / a > < span class = "lineno" > 135< / span >   < span class = "keyword" > const< / span > uint8_t * bs2,< / div >
< div class = "line" > < a name = "l00136" > < / a > < span class = "lineno" > 136< / span >   < span class = "keywordtype" > size_t< / span > n1,< / div >
< div class = "line" > < a name = "l00137" > < / a > < span class = "lineno" > 137< / span >   < span class = "keywordtype" > size_t< / span > n2,< / div >
< div class = "line" > < a name = "l00138" > < / a > < span class = "lineno" > 138< / span >   hamdis_t ht,< / div >
< div class = "line" > < a name = "l00139" > < / a > < span class = "lineno" > 139< / span >   < span class = "keywordtype" > size_t< / span > ncodes,< / div >
< div class = "line" > < a name = "l00140" > < / a > < span class = "lineno" > 140< / span >   < span class = "keywordtype" > size_t< / span > * nptr);< / 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 >   < span class = "comment" > /* Return all Hamming distances/index passing a thres. Pre-allocation of output< / span > < / div >
< div class = "line" > < a name = "l00143" > < / a > < span class = "lineno" > 143< / span >   < span class = "comment" > is required. Use hamming_count_thres to determine the proper size. */< / span > < / div >
< div class = "line" > < a name = "l00144" > < / a > < span class = "lineno" > 144< / span >   < span class = "keywordtype" > size_t< / span > match_hamming_thres (< / div >
< div class = "line" > < a name = "l00145" > < / a > < span class = "lineno" > 145< / span >   < span class = "keyword" > const< / span > uint8_t * bs1,< / div >
< div class = "line" > < a name = "l00146" > < / a > < span class = "lineno" > 146< / span >   < span class = "keyword" > const< / span > uint8_t * bs2,< / div >
< div class = "line" > < a name = "l00147" > < / a > < span class = "lineno" > 147< / span >   < span class = "keywordtype" > size_t< / span > n1,< / div >
< div class = "line" > < a name = "l00148" > < / a > < span class = "lineno" > 148< / span >   < span class = "keywordtype" > size_t< / span > n2,< / div >
< div class = "line" > < a name = "l00149" > < / a > < span class = "lineno" > 149< / span >   hamdis_t ht,< / div >
< div class = "line" > < a name = "l00150" > < / a > < span class = "lineno" > 150< / span >   < span class = "keywordtype" > size_t< / span > ncodes,< / div >
< div class = "line" > < a name = "l00151" > < / a > < span class = "lineno" > 151< / span >   < span class = "keywordtype" > long< / span > * idx,< / div >
< div class = "line" > < a name = "l00152" > < / a > < span class = "lineno" > 152< / span >   hamdis_t * dis);< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00153" > < / a > < span class = "lineno" > 153< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00154" > < / a > < span class = "lineno" > 154< / span >   < span class = "comment" > /* Cross-matching in a set of vectors */< / span > < / div >
< div class = "line" > < a name = "l00155" > < / a > < span class = "lineno" > 155< / span >   < span class = "keywordtype" > void< / span > crosshamming_count_thres (< / div >
< div class = "line" > < a name = "l00156" > < / a > < span class = "lineno" > 156< / span >   < span class = "keyword" > const< / span > uint8_t * dbs,< / div >
< div class = "line" > < a name = "l00157" > < / a > < span class = "lineno" > 157< / span >   < span class = "keywordtype" > size_t< / span > n,< / div >
< div class = "line" > < a name = "l00158" > < / a > < span class = "lineno" > 158< / span >   hamdis_t ht,< / div >
< div class = "line" > < a name = "l00159" > < / a > < span class = "lineno" > 159< / span >   < span class = "keywordtype" > size_t< / span > ncodes,< / div >
< div class = "line" > < a name = "l00160" > < / a > < span class = "lineno" > 160< / span >   < span class = "keywordtype" > size_t< / span > * nptr);< / div >
< div class = "line" > < a name = "l00161" > < / a > < span class = "lineno" > 161< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00162" > < / a > < span class = "lineno" > 162< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00163" > < / a > < span class = "lineno" > 163< / span >   < span class = "comment" > /* compute the Hamming distances between two codewords of nwords*64 bits */< / span > < / div >
< div class = "line" > < a name = "l00164" > < / a > < span class = "lineno" > 164< / span >   hamdis_t hamming (< / div >
< div class = "line" > < a name = "l00165" > < / a > < span class = "lineno" > 165< / span >   < span class = "keyword" > const< / span > uint64_t * bs1,< / div >
< div class = "line" > < a name = "l00166" > < / a > < span class = "lineno" > 166< / span >   < span class = "keyword" > const< / span > uint64_t * bs2,< / div >
< div class = "line" > < a name = "l00167" > < / a > < span class = "lineno" > 167< / span >   < span class = "keywordtype" > size_t< / span > nwords);< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00168" > < / a > < span class = "lineno" > 168< / span >   < / div >
2018-12-20 00:48:35 +08:00
< 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 >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00171" > < / a > < span class = "lineno" > 171< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00172" > < / a > < span class = "lineno" > 172< / span >   < span class = "comment" > /******************************************************************< / span > < / div >
< div class = "line" > < a name = "l00173" > < / a > < span class = "lineno" > 173< / span >   < span class = "comment" > * The HammingComputer series of classes compares a single code of< / span > < / div >
< div class = "line" > < a name = "l00174" > < / a > < span class = "lineno" > 174< / span >   < span class = "comment" > * size 4 to 32 to incoming codes. They are intended for use as a< / span > < / div >
< div class = "line" > < a name = "l00175" > < / a > < span class = "lineno" > 175< / span >   < span class = "comment" > * template class where it would be inefficient to switch on the code< / span > < / div >
< div class = "line" > < a name = "l00176" > < / a > < span class = "lineno" > 176< / span >   < span class = "comment" > * size in the inner loop. Hopefully the compiler will inline the< / span > < / div >
< div class = "line" > < a name = "l00177" > < / a > < span class = "lineno" > 177< / span >   < span class = "comment" > * hamming() functions and put the a0, a1, ... in registers.< / span > < / div >
< div class = "line" > < a name = "l00178" > < / a > < span class = "lineno" > 178< / span >   < span class = "comment" > ******************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00179" > < / a > < span class = "lineno" > 179< / span >   < / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00180" > < / a > < span class = "lineno" > 180< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00181" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputer4.html" > 181< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputer4.html" > HammingComputer4< / a > {< / div >
< div class = "line" > < a name = "l00182" > < / a > < span class = "lineno" > 182< / span >   uint32_t a0;< / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00183" > < / a > < span class = "lineno" > 183< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00184" > < / a > < span class = "lineno" > 184< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer4.html" > HammingComputer4< / a > () {}< / div >
< div class = "line" > < a name = "l00185" > < / a > < span class = "lineno" > 185< / span >   < / div >
< div class = "line" > < a name = "l00186" > < / a > < span class = "lineno" > 186< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer4.html" > HammingComputer4< / a > (< span class = "keyword" > const< / span > uint8_t *a, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00187" > < / a > < span class = "lineno" > 187< / span >   set (a, code_size);< / div >
< div class = "line" > < a name = "l00188" > < / a > < span class = "lineno" > 188< / span >   }< / div >
< div class = "line" > < a name = "l00189" > < / a > < span class = "lineno" > 189< / span >   < / div >
< div class = "line" > < a name = "l00190" > < / a > < span class = "lineno" > 190< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00191" > < / a > < span class = "lineno" > 191< / span >   assert (code_size == 4);< / div >
< div class = "line" > < a name = "l00192" > < / a > < span class = "lineno" > 192< / span >   a0 = *(uint32_t *)a;< / div >
< div class = "line" > < a name = "l00193" > < / a > < span class = "lineno" > 193< / span >   }< / div >
< div class = "line" > < a name = "l00194" > < / a > < span class = "lineno" > 194< / span >   < / div >
< div class = "line" > < a name = "l00195" > < / a > < span class = "lineno" > 195< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00196" > < / a > < span class = "lineno" > 196< / span >   < span class = "keywordflow" > return< / span > popcount64 (*(uint32_t *)b ^ a0);< / div >
< div class = "line" > < a name = "l00197" > < / a > < span class = "lineno" > 197< / span >   }< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00198" > < / a > < span class = "lineno" > 198< / span >   < / div >
2018-12-20 00:48:35 +08:00
< 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 >   < / div >
< div class = "line" > < a name = "l00201" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputer8.html" > 201< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputer8.html" > HammingComputer8< / a > {< / div >
< div class = "line" > < a name = "l00202" > < / a > < span class = "lineno" > 202< / span >   uint64_t a0;< / 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 >   < a class = "code" href = "structfaiss_1_1HammingComputer8.html" > HammingComputer8< / a > () {}< / 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 >   < a class = "code" href = "structfaiss_1_1HammingComputer8.html" > HammingComputer8< / a > (< span class = "keyword" > const< / span > uint8_t *a, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00207" > < / a > < span class = "lineno" > 207< / span >   set (a, code_size);< / div >
< div class = "line" > < a name = "l00208" > < / a > < span class = "lineno" > 208< / span >   }< / div >
< div class = "line" > < a name = "l00209" > < / a > < span class = "lineno" > 209< / span >   < / div >
< div class = "line" > < a name = "l00210" > < / a > < span class = "lineno" > 210< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00211" > < / a > < span class = "lineno" > 211< / span >   assert (code_size == 8);< / div >
< div class = "line" > < a name = "l00212" > < / a > < span class = "lineno" > 212< / span >   a0 = *(uint64_t *)a;< / div >
< div class = "line" > < a name = "l00213" > < / a > < span class = "lineno" > 213< / span >   }< / div >
< div class = "line" > < a name = "l00214" > < / a > < span class = "lineno" > 214< / span >   < / div >
< div class = "line" > < a name = "l00215" > < / a > < span class = "lineno" > 215< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00216" > < / a > < span class = "lineno" > 216< / span >   < span class = "keywordflow" > return< / span > popcount64 (*(uint64_t *)b ^ a0);< / 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 >   < / div >
< div class = "line" > < a name = "l00219" > < / a > < span class = "lineno" > 219< / span >   };< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00220" > < / a > < span class = "lineno" > 220< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00221" > < / a > < span class = "lineno" > 221< / span >   < / div >
< div class = "line" > < a name = "l00222" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputer16.html" > 222< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputer16.html" > HammingComputer16< / a > {< / div >
< div class = "line" > < a name = "l00223" > < / a > < span class = "lineno" > 223< / span >   uint64_t a0, a1;< / 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 >   < a class = "code" href = "structfaiss_1_1HammingComputer16.html" > HammingComputer16< / a > () {}< / div >
2017-06-21 21:54:28 +08:00
< div class = "line" > < a name = "l00226" > < / a > < span class = "lineno" > 226< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00227" > < / a > < span class = "lineno" > 227< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer16.html" > HammingComputer16< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00228" > < / a > < span class = "lineno" > 228< / span >   set (a8, code_size);< / div >
< div class = "line" > < a name = "l00229" > < / a > < span class = "lineno" > 229< / span >   }< / div >
< div class = "line" > < a name = "l00230" > < / a > < span class = "lineno" > 230< / span >   < / div >
< div class = "line" > < a name = "l00231" > < / a > < span class = "lineno" > 231< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00232" > < / a > < span class = "lineno" > 232< / span >   assert (code_size == 16);< / div >
< div class = "line" > < a name = "l00233" > < / a > < span class = "lineno" > 233< / span >   < span class = "keyword" > const< / span > uint64_t *a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00234" > < / a > < span class = "lineno" > 234< / span >   a0 = a[0]; a1 = a[1];< / div >
< div class = "line" > < a name = "l00235" > < / a > < span class = "lineno" > 235< / span >   }< / div >
< div class = "line" > < a name = "l00236" > < / a > < span class = "lineno" > 236< / span >   < / div >
< div class = "line" > < a name = "l00237" > < / a > < span class = "lineno" > 237< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00238" > < / a > < span class = "lineno" > 238< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
< div class = "line" > < a name = "l00239" > < / a > < span class = "lineno" > 239< / span >   < span class = "keywordflow" > return< / span > popcount64 (b[0] ^ a0) + popcount64 (b[1] ^ a1);< / 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 >   < / div >
< div class = "line" > < a name = "l00242" > < / a > < span class = "lineno" > 242< / span >   };< / div >
< div class = "line" > < a name = "l00243" > < / a > < span class = "lineno" > 243< / span >   < / div >
< div class = "line" > < a name = "l00244" > < / a > < span class = "lineno" > 244< / span >   < span class = "comment" > // when applied to an array, 1/2 of the 64-bit accesses are unaligned.< / span > < / div >
< div class = "line" > < a name = "l00245" > < / a > < span class = "lineno" > 245< / span >   < span class = "comment" > // This incurs a penalty of ~10% wrt. fully aligned accesses.< / span > < / div >
< div class = "line" > < a name = "l00246" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputer20.html" > 246< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputer20.html" > HammingComputer20< / a > {< / div >
< div class = "line" > < a name = "l00247" > < / a > < span class = "lineno" > 247< / span >   uint64_t a0, a1;< / div >
< div class = "line" > < a name = "l00248" > < / a > < span class = "lineno" > 248< / span >   uint32_t a2;< / div >
< div class = "line" > < a name = "l00249" > < / a > < span class = "lineno" > 249< / span >   < / div >
< div class = "line" > < a name = "l00250" > < / a > < span class = "lineno" > 250< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer20.html" > HammingComputer20< / a > () {}< / div >
< div class = "line" > < a name = "l00251" > < / a > < span class = "lineno" > 251< / span >   < / div >
< div class = "line" > < a name = "l00252" > < / a > < span class = "lineno" > 252< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer20.html" > HammingComputer20< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00253" > < / a > < span class = "lineno" > 253< / span >   set (a8, code_size);< / div >
< div class = "line" > < a name = "l00254" > < / a > < span class = "lineno" > 254< / span >   }< / div >
< div class = "line" > < a name = "l00255" > < / a > < span class = "lineno" > 255< / span >   < / div >
< div class = "line" > < a name = "l00256" > < / a > < span class = "lineno" > 256< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00257" > < / a > < span class = "lineno" > 257< / span >   assert (code_size == 20);< / div >
< div class = "line" > < a name = "l00258" > < / a > < span class = "lineno" > 258< / span >   < span class = "keyword" > const< / span > uint64_t *a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00259" > < / a > < span class = "lineno" > 259< / span >   a0 = a[0]; a1 = a[1]; a2 = a[2];< / 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 >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00263" > < / a > < span class = "lineno" > 263< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
< div class = "line" > < a name = "l00264" > < / a > < span class = "lineno" > 264< / span >   < span class = "keywordflow" > return< / span > popcount64 (b[0] ^ a0) + popcount64 (b[1] ^ a1) +< / div >
< div class = "line" > < a name = "l00265" > < / a > < span class = "lineno" > 265< / span >   popcount64 (*(uint32_t*)(b + 2) ^ a2);< / div >
< div class = "line" > < a name = "l00266" > < / a > < span class = "lineno" > 266< / span >   }< / div >
< div class = "line" > < a name = "l00267" > < / a > < span class = "lineno" > 267< / span >   };< / div >
< div class = "line" > < a name = "l00268" > < / a > < span class = "lineno" > 268< / span >   < / div >
< div class = "line" > < a name = "l00269" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputer32.html" > 269< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputer32.html" > HammingComputer32< / a > {< / div >
< div class = "line" > < a name = "l00270" > < / a > < span class = "lineno" > 270< / span >   uint64_t a0, a1, a2, a3;< / div >
< div class = "line" > < a name = "l00271" > < / a > < span class = "lineno" > 271< / span >   < / div >
< div class = "line" > < a name = "l00272" > < / a > < span class = "lineno" > 272< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer32.html" > HammingComputer32< / a > () {}< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00273" > < / a > < span class = "lineno" > 273< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00274" > < / a > < span class = "lineno" > 274< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer32.html" > HammingComputer32< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00275" > < / a > < span class = "lineno" > 275< / span >   set (a8, code_size);< / div >
< div class = "line" > < a name = "l00276" > < / a > < span class = "lineno" > 276< / span >   }< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00277" > < / a > < span class = "lineno" > 277< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00278" > < / a > < span class = "lineno" > 278< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00279" > < / a > < span class = "lineno" > 279< / span >   assert (code_size == 32);< / div >
< div class = "line" > < a name = "l00280" > < / a > < span class = "lineno" > 280< / span >   < span class = "keyword" > const< / span > uint64_t *a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00281" > < / a > < span class = "lineno" > 281< / span >   a0 = a[0]; a1 = a[1]; a2 = a[2]; a3 = a[3];< / div >
2017-07-26 18:11:01 +08:00
< 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 >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00284" > < / a > < span class = "lineno" > 284< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00285" > < / a > < span class = "lineno" > 285< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00286" > < / a > < span class = "lineno" > 286< / span >   < span class = "keywordflow" > return< / span > popcount64 (b[0] ^ a0) + popcount64 (b[1] ^ a1) +< / div >
< div class = "line" > < a name = "l00287" > < / a > < span class = "lineno" > 287< / span >   popcount64 (b[2] ^ a2) + popcount64 (b[3] ^ a3);< / div >
< div class = "line" > < a name = "l00288" > < / a > < span class = "lineno" > 288< / span >   }< / div >
< div class = "line" > < a name = "l00289" > < / a > < span class = "lineno" > 289< / span >   < / div >
< div class = "line" > < a name = "l00290" > < / a > < span class = "lineno" > 290< / span >   };< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00291" > < / a > < span class = "lineno" > 291< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00292" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputer64.html" > 292< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputer64.html" > HammingComputer64< / a > {< / div >
< div class = "line" > < a name = "l00293" > < / a > < span class = "lineno" > 293< / span >   uint64_t a0, a1, a2, a3, a4, a5, a6, a7;< / div >
< div class = "line" > < a name = "l00294" > < / a > < span class = "lineno" > 294< / span >   < / div >
< div class = "line" > < a name = "l00295" > < / a > < span class = "lineno" > 295< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer64.html" > HammingComputer64< / a > () {}< / div >
< div class = "line" > < a name = "l00296" > < / a > < span class = "lineno" > 296< / span >   < / div >
< div class = "line" > < a name = "l00297" > < / a > < span class = "lineno" > 297< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer64.html" > HammingComputer64< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00298" > < / a > < span class = "lineno" > 298< / span >   set (a8, code_size);< / div >
< div class = "line" > < a name = "l00299" > < / a > < span class = "lineno" > 299< / span >   }< / div >
< div class = "line" > < a name = "l00300" > < / a > < span class = "lineno" > 300< / span >   < / div >
< div class = "line" > < a name = "l00301" > < / a > < span class = "lineno" > 301< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00302" > < / a > < span class = "lineno" > 302< / span >   assert (code_size == 64);< / div >
< div class = "line" > < a name = "l00303" > < / a > < span class = "lineno" > 303< / span >   < span class = "keyword" > const< / span > uint64_t *a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00304" > < / a > < span class = "lineno" > 304< / span >   a0 = a[0]; a1 = a[1]; a2 = a[2]; a3 = a[3];< / div >
< div class = "line" > < a name = "l00305" > < / a > < span class = "lineno" > 305< / span >   a4 = a[4]; a5 = a[5]; a6 = a[6]; a7 = a[7];< / div >
< div class = "line" > < a name = "l00306" > < / a > < span class = "lineno" > 306< / span >   }< / div >
< div class = "line" > < a name = "l00307" > < / a > < span class = "lineno" > 307< / span >   < / div >
< div class = "line" > < a name = "l00308" > < / a > < span class = "lineno" > 308< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00309" > < / a > < span class = "lineno" > 309< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
< div class = "line" > < a name = "l00310" > < / a > < span class = "lineno" > 310< / span >   < span class = "keywordflow" > return< / span > popcount64 (b[0] ^ a0) + popcount64 (b[1] ^ a1) +< / div >
< div class = "line" > < a name = "l00311" > < / a > < span class = "lineno" > 311< / span >   popcount64 (b[2] ^ a2) + popcount64 (b[3] ^ a3) +< / div >
< div class = "line" > < a name = "l00312" > < / a > < span class = "lineno" > 312< / span >   popcount64 (b[4] ^ a4) + popcount64 (b[5] ^ a5) +< / div >
< div class = "line" > < a name = "l00313" > < / a > < span class = "lineno" > 313< / span >   popcount64 (b[6] ^ a6) + popcount64 (b[7] ^ a7);< / div >
< div class = "line" > < a name = "l00314" > < / a > < span class = "lineno" > 314< / span >   }< / div >
< div class = "line" > < a name = "l00315" > < / a > < span class = "lineno" > 315< / span >   < / div >
< div class = "line" > < a name = "l00316" > < / a > < span class = "lineno" > 316< / span >   };< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00317" > < / a > < span class = "lineno" > 317< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00318" > < / a > < span class = "lineno" > 318< / span >   < span class = "comment" > // very inefficient...< / span > < / div >
< div class = "line" > < a name = "l00319" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputerDefault.html" > 319< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputerDefault.html" > HammingComputerDefault< / a > {< / div >
< div class = "line" > < a name = "l00320" > < / a > < span class = "lineno" > 320< / span >   < span class = "keyword" > const< / span > uint8_t *a;< / div >
< div class = "line" > < a name = "l00321" > < / a > < span class = "lineno" > 321< / span >   < span class = "keywordtype" > int< / span > n;< / div >
< div class = "line" > < a name = "l00322" > < / a > < span class = "lineno" > 322< / span >   < / div >
< div class = "line" > < a name = "l00323" > < / a > < span class = "lineno" > 323< / span >   < a class = "code" href = "structfaiss_1_1HammingComputerDefault.html" > HammingComputerDefault< / a > () {}< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00324" > < / a > < span class = "lineno" > 324< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00325" > < / a > < span class = "lineno" > 325< / span >   < a class = "code" href = "structfaiss_1_1HammingComputerDefault.html" > HammingComputerDefault< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00326" > < / a > < span class = "lineno" > 326< / span >   set (a8, code_size);< / 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 = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00330" > < / a > < span class = "lineno" > 330< / span >   a = a8;< / div >
< div class = "line" > < a name = "l00331" > < / a > < span class = "lineno" > 331< / span >   n = code_size;< / div >
< div class = "line" > < a name = "l00332" > < / a > < span class = "lineno" > 332< / span >   }< / div >
< div class = "line" > < a name = "l00333" > < / a > < span class = "lineno" > 333< / span >   < / div >
< div class = "line" > < a name = "l00334" > < / a > < span class = "lineno" > 334< / span >   < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00335" > < / a > < span class = "lineno" > 335< / span >   < span class = "keywordtype" > int< / span > accu = 0;< / div >
< div class = "line" > < a name = "l00336" > < / a > < span class = "lineno" > 336< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00337" > < / a > < span class = "lineno" > 337< / span >   accu += popcount64 (a[i] ^ b8[i]);< / div >
< div class = "line" > < a name = "l00338" > < / a > < span class = "lineno" > 338< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00339" > < / a > < span class = "lineno" > 339< / span >   }< / div >
< div class = "line" > < a name = "l00340" > < / a > < span class = "lineno" > 340< / span >   < / div >
< div class = "line" > < a name = "l00341" > < / a > < span class = "lineno" > 341< / span >   };< / div >
< div class = "line" > < a name = "l00342" > < / a > < span class = "lineno" > 342< / span >   < / div >
< div class = "line" > < a name = "l00343" > < / a > < span class = "lineno" > 343< / span >   < / div >
< div class = "line" > < a name = "l00344" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputerM8.html" > 344< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputerM8.html" > HammingComputerM8< / a > {< / div >
< div class = "line" > < a name = "l00345" > < / a > < span class = "lineno" > 345< / span >   < span class = "keyword" > const< / span > uint64_t *a;< / div >
< div class = "line" > < a name = "l00346" > < / a > < span class = "lineno" > 346< / span >   < span class = "keywordtype" > int< / span > n;< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00347" > < / a > < span class = "lineno" > 347< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00348" > < / a > < span class = "lineno" > 348< / span >   < a class = "code" href = "structfaiss_1_1HammingComputerM8.html" > HammingComputerM8< / a > () {}< / div >
< div class = "line" > < a name = "l00349" > < / a > < span class = "lineno" > 349< / span >   < / div >
< div class = "line" > < a name = "l00350" > < / a > < span class = "lineno" > 350< / span >   < a class = "code" href = "structfaiss_1_1HammingComputerM8.html" > HammingComputerM8< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00351" > < / a > < span class = "lineno" > 351< / span >   set (a8, code_size);< / 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 >   < / div >
< div class = "line" > < a name = "l00354" > < / a > < span class = "lineno" > 354< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00355" > < / a > < span class = "lineno" > 355< / span >   assert (code_size % 8 == 0);< / div >
< div class = "line" > < a name = "l00356" > < / a > < span class = "lineno" > 356< / span >   a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00357" > < / a > < span class = "lineno" > 357< / span >   n = code_size / 8;< / div >
< div class = "line" > < a name = "l00358" > < / a > < span class = "lineno" > 358< / span >   }< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00359" > < / a > < span class = "lineno" > 359< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00360" > < / a > < span class = "lineno" > 360< / span >   < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00361" > < / a > < span class = "lineno" > 361< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
< div class = "line" > < a name = "l00362" > < / a > < span class = "lineno" > 362< / span >   < span class = "keywordtype" > int< / span > accu = 0;< / div >
< div class = "line" > < a name = "l00363" > < / a > < span class = "lineno" > 363< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00364" > < / a > < span class = "lineno" > 364< / span >   accu += popcount64 (a[i] ^ b[i]);< / div >
< div class = "line" > < a name = "l00365" > < / a > < span class = "lineno" > 365< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00366" > < / a > < span class = "lineno" > 366< / span >   }< / div >
< div class = "line" > < a name = "l00367" > < / a > < span class = "lineno" > 367< / span >   < / div >
< div class = "line" > < a name = "l00368" > < / a > < span class = "lineno" > 368< / span >   };< / div >
< div class = "line" > < a name = "l00369" > < / a > < span class = "lineno" > 369< / span >   < / div >
< div class = "line" > < a name = "l00370" > < / a > < span class = "lineno" > 370< / span >   < span class = "comment" > // even more inefficient!< / span > < / div >
< div class = "line" > < a name = "l00371" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputerM4.html" > 371< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputerM4.html" > HammingComputerM4< / a > {< / div >
< div class = "line" > < a name = "l00372" > < / a > < span class = "lineno" > 372< / span >   < span class = "keyword" > const< / span > uint32_t *a;< / div >
< div class = "line" > < a name = "l00373" > < / a > < span class = "lineno" > 373< / span >   < span class = "keywordtype" > int< / span > n;< / div >
< div class = "line" > < a name = "l00374" > < / a > < span class = "lineno" > 374< / span >   < / div >
< div class = "line" > < a name = "l00375" > < / a > < span class = "lineno" > 375< / span >   < a class = "code" href = "structfaiss_1_1HammingComputerM4.html" > HammingComputerM4< / a > () {}< / 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 >   < a class = "code" href = "structfaiss_1_1HammingComputerM4.html" > HammingComputerM4< / a > (< span class = "keyword" > const< / span > uint8_t *a4, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00378" > < / a > < span class = "lineno" > 378< / span >   set (a4, code_size);< / 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 >   < / div >
< div class = "line" > < a name = "l00381" > < / a > < span class = "lineno" > 381< / span >   < span class = "keywordtype" > void< / span > set (< span class = "keyword" > const< / span > uint8_t *a4, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00382" > < / a > < span class = "lineno" > 382< / span >   assert (code_size % 4 == 0);< / div >
< div class = "line" > < a name = "l00383" > < / a > < span class = "lineno" > 383< / span >   a = (uint32_t *)a4;< / div >
< div class = "line" > < a name = "l00384" > < / a > < span class = "lineno" > 384< / span >   n = code_size / 4;< / div >
< div class = "line" > < a name = "l00385" > < / a > < span class = "lineno" > 385< / span >   }< / div >
< div class = "line" > < a name = "l00386" > < / a > < span class = "lineno" > 386< / span >   < / div >
< div class = "line" > < a name = "l00387" > < / a > < span class = "lineno" > 387< / span >   < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00388" > < / a > < span class = "lineno" > 388< / span >   < span class = "keyword" > const< / span > uint32_t *b = (uint32_t *)b8;< / div >
< div class = "line" > < a name = "l00389" > < / a > < span class = "lineno" > 389< / span >   < span class = "keywordtype" > int< / span > accu = 0;< / div >
< div class = "line" > < a name = "l00390" > < / a > < span class = "lineno" > 390< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00391" > < / a > < span class = "lineno" > 391< / span >   accu += popcount64 (a[i] ^ b[i]);< / div >
< div class = "line" > < a name = "l00392" > < / a > < span class = "lineno" > 392< / span >   < span class = "keywordflow" > return< / span > accu;< / div >
< div class = "line" > < a name = "l00393" > < / a > < span class = "lineno" > 393< / span >   }< / div >
< div class = "line" > < a name = "l00394" > < / a > < span class = "lineno" > 394< / span >   < / div >
< div class = "line" > < a name = "l00395" > < / a > < span class = "lineno" > 395< / span >   };< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00396" > < / a > < span class = "lineno" > 396< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00397" > < / a > < span class = "lineno" > 397< / span >   < span class = "comment" > /***************************************************************************< / span > < / div >
< div class = "line" > < a name = "l00398" > < / a > < span class = "lineno" > 398< / span >   < span class = "comment" > * Equivalence with a template class when code size is known at compile time< / span > < / div >
< div class = "line" > < a name = "l00399" > < / a > < span class = "lineno" > 399< / span >   < span class = "comment" > **************************************************************************/< / span > < / div >
< div class = "line" > < a name = "l00400" > < / a > < span class = "lineno" > 400< / span >   < / div >
< div class = "line" > < a name = "l00401" > < / a > < span class = "lineno" > 401< / span >   < span class = "comment" > // default template< / span > < / div >
< div class = "line" > < a name = "l00402" > < / a > < span class = "lineno" > 402< / span >   < span class = "keyword" > template< / span > < < span class = "keywordtype" > int< / span > CODE_SIZE> < / div >
< div class = "line" > < a name = "l00403" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HammingComputer.html" > 403< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HammingComputer.html" > HammingComputer< / a > : < a class = "code" href = "structfaiss_1_1HammingComputerM8.html" > HammingComputerM8< / a > {< / div >
< div class = "line" > < a name = "l00404" > < / a > < span class = "lineno" > 404< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer.html" > HammingComputer< / a > (< span class = "keyword" > const< / span > uint8_t *a, < span class = "keywordtype" > int< / span > code_size):< / div >
< div class = "line" > < a name = "l00405" > < / a > < span class = "lineno" > 405< / span >   < a class = "code" href = "structfaiss_1_1HammingComputerM8.html" > HammingComputerM8< / a > (a, code_size) {}< / div >
< div class = "line" > < a name = "l00406" > < / a > < span class = "lineno" > 406< / span >   };< / 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 = "preprocessor" > #define SPECIALIZED_HC(CODE_SIZE) \< / span > < / div >
< div class = "line" > < a name = "l00409" > < / a > < span class = "lineno" > 409< / span >   < span class = "preprocessor" > template< > struct HammingComputer< CODE_SIZE> : \< / span > < / div >
< div class = "line" > < a name = "l00410" > < / a > < span class = "lineno" > 410< / span >   < span class = "preprocessor" > HammingComputer ## CODE_SIZE { \< / span > < / div >
< div class = "line" > < a name = "l00411" > < / a > < span class = "lineno" > 411< / span >   < span class = "preprocessor" > HammingComputer (const uint8_t *a): \< / span > < / div >
< div class = "line" > < a name = "l00412" > < / a > < span class = "lineno" > 412< / span >   < span class = "preprocessor" > HammingComputer ## CODE_SIZE(a, CODE_SIZE) {} \< / span > < / div >
< div class = "line" > < a name = "l00413" > < / a > < span class = "lineno" > 413< / span >   < span class = "preprocessor" > }< / span > < / div >
< div class = "line" > < a name = "l00414" > < / a > < span class = "lineno" > 414< / span >   < span class = "preprocessor" > < / span > < / div >
< div class = "line" > < a name = "l00415" > < / a > < span class = "lineno" > 415< / span >   SPECIALIZED_HC(4);< / div >
< div class = "line" > < a name = "l00416" > < / a > < span class = "lineno" > 416< / span >   SPECIALIZED_HC(8);< / div >
< div class = "line" > < a name = "l00417" > < / a > < span class = "lineno" > 417< / span >   SPECIALIZED_HC(16);< / div >
< div class = "line" > < a name = "l00418" > < / a > < span class = "lineno" > 418< / span >   SPECIALIZED_HC(20);< / div >
< div class = "line" > < a name = "l00419" > < / a > < span class = "lineno" > 419< / span >   SPECIALIZED_HC(32);< / div >
< div class = "line" > < a name = "l00420" > < / a > < span class = "lineno" > 420< / span >   SPECIALIZED_HC(64);< / div >
< div class = "line" > < a name = "l00421" > < / a > < span class = "lineno" > 421< / span >   < / div >
< div class = "line" > < a name = "l00422" > < / a > < span class = "lineno" > 422< / span >   < span class = "preprocessor" > #undef SPECIALIZED_HC< / span > < / div >
< div class = "line" > < a name = "l00423" > < / a > < span class = "lineno" > 423< / span >   < span class = "preprocessor" > < / span > < / div >
2017-02-23 06:26:44 +08:00
< div class = "line" > < a name = "l00424" > < / a > < span class = "lineno" > 424< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00425" > < / a > < span class = "lineno" > 425< / span >   < span class = "comment" > /***************************************************************************< / span > < / div >
< div class = "line" > < a name = "l00426" > < / a > < span class = "lineno" > 426< / span >   < span class = "comment" > * generalized Hamming = number of bytes that are different between< / span > < / div >
< div class = "line" > < a name = "l00427" > < / a > < span class = "lineno" > 427< / span >   < span class = "comment" > * two codes.< / span > < / div >
< div class = "line" > < a name = "l00428" > < / a > < span class = "lineno" > 428< / span >   < span class = "comment" > ***************************************************************************/< / span > < / 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" > inline< / span > < span class = "keywordtype" > int< / span > generalized_hamming_64 (uint64_t a) {< / div >
< div class = "line" > < a name = "l00432" > < / a > < span class = "lineno" > 432< / span >   a |= a > > 1;< / div >
< div class = "line" > < a name = "l00433" > < / a > < span class = "lineno" > 433< / span >   a |= a > > 2;< / div >
< div class = "line" > < a name = "l00434" > < / a > < span class = "lineno" > 434< / span >   a |= a > > 4;< / div >
< div class = "line" > < a name = "l00435" > < / a > < span class = "lineno" > 435< / span >   a & = 0x0101010101010101UL;< / div >
< div class = "line" > < a name = "l00436" > < / a > < span class = "lineno" > 436< / span >   < span class = "keywordflow" > return< / span > popcount64 (a);< / div >
< div class = "line" > < a name = "l00437" > < / a > < span class = "lineno" > 437< / span >   }< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00438" > < / a > < span class = "lineno" > 438< / span >   < / div >
< div class = "line" > < a name = "l00439" > < / a > < span class = "lineno" > 439< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00440" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1GenHammingComputer8.html" > 440< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1GenHammingComputer8.html" > GenHammingComputer8< / a > {< / div >
< div class = "line" > < a name = "l00441" > < / a > < span class = "lineno" > 441< / span >   uint64_t a0;< / div >
2017-07-26 18:11:01 +08:00
< div class = "line" > < a name = "l00442" > < / a > < span class = "lineno" > 442< / span >   < / div >
2018-12-20 00:48:35 +08:00
< div class = "line" > < a name = "l00443" > < / a > < span class = "lineno" > 443< / span >   < a class = "code" href = "structfaiss_1_1GenHammingComputer8.html" > GenHammingComputer8< / a > (< span class = "keyword" > const< / span > uint8_t *a, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00444" > < / a > < span class = "lineno" > 444< / span >   assert (code_size == 8);< / div >
< div class = "line" > < a name = "l00445" > < / a > < span class = "lineno" > 445< / span >   a0 = *(uint64_t *)a;< / div >
< div class = "line" > < a name = "l00446" > < / a > < span class = "lineno" > 446< / span >   }< / div >
< div class = "line" > < a name = "l00447" > < / a > < span class = "lineno" > 447< / span >   < / div >
< div class = "line" > < a name = "l00448" > < / a > < span class = "lineno" > 448< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00449" > < / a > < span class = "lineno" > 449< / span >   < span class = "keywordflow" > return< / span > generalized_hamming_64 (*(uint64_t *)b ^ a0);< / 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 >   < / div >
< div class = "line" > < a name = "l00452" > < / a > < span class = "lineno" > 452< / span >   };< / div >
< div class = "line" > < a name = "l00453" > < / a > < span class = "lineno" > 453< / span >   < / div >
< div class = "line" > < a name = "l00454" > < / a > < span class = "lineno" > 454< / span >   < / div >
< div class = "line" > < a name = "l00455" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1GenHammingComputer16.html" > 455< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1GenHammingComputer16.html" > GenHammingComputer16< / a > {< / div >
< div class = "line" > < a name = "l00456" > < / a > < span class = "lineno" > 456< / span >   uint64_t a0, a1;< / div >
< div class = "line" > < a name = "l00457" > < / a > < span class = "lineno" > 457< / span >   < a class = "code" href = "structfaiss_1_1GenHammingComputer16.html" > GenHammingComputer16< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00458" > < / a > < span class = "lineno" > 458< / span >   assert (code_size == 16);< / div >
< div class = "line" > < a name = "l00459" > < / a > < span class = "lineno" > 459< / span >   < span class = "keyword" > const< / span > uint64_t *a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00460" > < / a > < span class = "lineno" > 460< / span >   a0 = a[0]; a1 = a[1];< / div >
< div class = "line" > < a name = "l00461" > < / a > < span class = "lineno" > 461< / span >   }< / div >
< div class = "line" > < a name = "l00462" > < / a > < span class = "lineno" > 462< / span >   < / div >
< div class = "line" > < a name = "l00463" > < / a > < span class = "lineno" > 463< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00464" > < / a > < span class = "lineno" > 464< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
< div class = "line" > < a name = "l00465" > < / a > < span class = "lineno" > 465< / span >   < span class = "keywordflow" > return< / span > generalized_hamming_64 (b[0] ^ a0) +< / div >
< div class = "line" > < a name = "l00466" > < / a > < span class = "lineno" > 466< / span >   generalized_hamming_64 (b[1] ^ a1);< / div >
< div class = "line" > < a name = "l00467" > < / a > < span class = "lineno" > 467< / span >   }< / div >
< div class = "line" > < a name = "l00468" > < / a > < span class = "lineno" > 468< / span >   < / div >
< div class = "line" > < a name = "l00469" > < / a > < span class = "lineno" > 469< / span >   };< / div >
< div class = "line" > < a name = "l00470" > < / a > < span class = "lineno" > 470< / span >   < / div >
< div class = "line" > < a name = "l00471" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1GenHammingComputer32.html" > 471< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1GenHammingComputer32.html" > GenHammingComputer32< / a > {< / div >
< div class = "line" > < a name = "l00472" > < / a > < span class = "lineno" > 472< / span >   uint64_t a0, a1, a2, a3;< / div >
< div class = "line" > < a name = "l00473" > < / a > < span class = "lineno" > 473< / span >   < / div >
< div class = "line" > < a name = "l00474" > < / a > < span class = "lineno" > 474< / span >   < a class = "code" href = "structfaiss_1_1GenHammingComputer32.html" > GenHammingComputer32< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00475" > < / a > < span class = "lineno" > 475< / span >   assert (code_size == 32);< / div >
< div class = "line" > < a name = "l00476" > < / a > < span class = "lineno" > 476< / span >   < span class = "keyword" > const< / span > uint64_t *a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00477" > < / a > < span class = "lineno" > 477< / span >   a0 = a[0]; a1 = a[1]; a2 = a[2]; a3 = a[3];< / div >
< div class = "line" > < a name = "l00478" > < / a > < span class = "lineno" > 478< / span >   }< / div >
< div class = "line" > < a name = "l00479" > < / a > < span class = "lineno" > 479< / span >   < / div >
< div class = "line" > < a name = "l00480" > < / a > < span class = "lineno" > 480< / span >   < span class = "keyword" > inline< / span > < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00481" > < / a > < span class = "lineno" > 481< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
< div class = "line" > < a name = "l00482" > < / a > < span class = "lineno" > 482< / span >   < span class = "keywordflow" > return< / span > generalized_hamming_64 (b[0] ^ a0) +< / div >
< div class = "line" > < a name = "l00483" > < / a > < span class = "lineno" > 483< / span >   generalized_hamming_64 (b[1] ^ a1) +< / div >
< div class = "line" > < a name = "l00484" > < / a > < span class = "lineno" > 484< / span >   generalized_hamming_64 (b[2] ^ a2) +< / div >
< div class = "line" > < a name = "l00485" > < / a > < span class = "lineno" > 485< / span >   generalized_hamming_64 (b[3] ^ a3);< / div >
< div class = "line" > < a name = "l00486" > < / a > < span class = "lineno" > 486< / span >   }< / div >
< div class = "line" > < a name = "l00487" > < / a > < span class = "lineno" > 487< / span >   < / div >
< div class = "line" > < a name = "l00488" > < / a > < span class = "lineno" > 488< / span >   };< / div >
< div class = "line" > < a name = "l00489" > < / a > < span class = "lineno" > 489< / span >   < / div >
< div class = "line" > < a name = "l00490" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1GenHammingComputerM8.html" > 490< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1GenHammingComputerM8.html" > GenHammingComputerM8< / a > {< / div >
< div class = "line" > < a name = "l00491" > < / a > < span class = "lineno" > 491< / span >   < span class = "keyword" > const< / span > uint64_t *a;< / div >
< div class = "line" > < a name = "l00492" > < / a > < span class = "lineno" > 492< / span >   < span class = "keywordtype" > int< / span > n;< / 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 >   < a class = "code" href = "structfaiss_1_1GenHammingComputerM8.html" > GenHammingComputerM8< / a > (< span class = "keyword" > const< / span > uint8_t *a8, < span class = "keywordtype" > int< / span > code_size) {< / div >
< div class = "line" > < a name = "l00495" > < / a > < span class = "lineno" > 495< / span >   assert (code_size % 8 == 0);< / div >
< div class = "line" > < a name = "l00496" > < / a > < span class = "lineno" > 496< / span >   a = (uint64_t *)a8;< / div >
< div class = "line" > < a name = "l00497" > < / a > < span class = "lineno" > 497< / span >   n = code_size / 8;< / div >
< div class = "line" > < a name = "l00498" > < / a > < span class = "lineno" > 498< / span >   }< / div >
< div class = "line" > < a name = "l00499" > < / a > < span class = "lineno" > 499< / span >   < / div >
< div class = "line" > < a name = "l00500" > < / a > < span class = "lineno" > 500< / span >   < span class = "keywordtype" > int< / span > hamming (< span class = "keyword" > const< / span > uint8_t *b8)< span class = "keyword" > const < / span > {< / div >
< div class = "line" > < a name = "l00501" > < / a > < span class = "lineno" > 501< / span >   < span class = "keyword" > const< / span > uint64_t *b = (uint64_t *)b8;< / div >
< div class = "line" > < a name = "l00502" > < / a > < span class = "lineno" > 502< / span >   < span class = "keywordtype" > int< / span > accu = 0;< / div >
< div class = "line" > < a name = "l00503" > < / a > < span class = "lineno" > 503< / span >   < span class = "keywordflow" > for< / span > (< span class = "keywordtype" > int< / span > i = 0; i < n; i++)< / div >
< div class = "line" > < a name = "l00504" > < / a > < span class = "lineno" > 504< / span >   accu += generalized_hamming_64 (a[i] ^ b[i]);< / div >
< div class = "line" > < a name = "l00505" > < / a > < span class = "lineno" > 505< / span >   < span class = "keywordflow" > return< / span > accu;< / 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 >   < / div >
< div class = "line" > < a name = "l00508" > < / a > < span class = "lineno" > 508< / span >   };< / div >
< div class = "line" > < a name = "l00509" > < / a > < span class = "lineno" > 509< / span >   < / div >
< div class = "line" > < a name = "l00510" > < / a > < span class = "lineno" > 510< / span >   < span class = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00511" > < / a > < span class = "lineno" > 511< / span >   < span class = "comment" > /** generalized Hamming distances (= count number of code bytes that< / span > < / div >
< div class = "line" > < a name = "l00512" > < / a > < span class = "lineno" > 512< / span >   < span class = "comment" > are the same) */< / span > < / div >
< div class = "line" > < a name = "l00513" > < / a > < span class = "lineno" > 513< / span >   < span class = "keywordtype" > void< / span > < a class = "code" href = "namespacefaiss.html#a9c1131631ad4314ba716372fe0d1dea6" > generalized_hammings_knn_hc< / a > (< / div >
< div class = "line" > < a name = "l00514" > < / a > < span class = "lineno" > 514< / span >   < a class = "code" href = "structfaiss_1_1HeapArray.html" > int_maxheap_array_t< / a > * ha,< / div >
< div class = "line" > < a name = "l00515" > < / a > < span class = "lineno" > 515< / span >   < span class = "keyword" > const< / span > uint8_t * a,< / div >
< div class = "line" > < a name = "l00516" > < / a > < span class = "lineno" > 516< / span >   < span class = "keyword" > const< / span > uint8_t * b,< / div >
< div class = "line" > < a name = "l00517" > < / a > < span class = "lineno" > 517< / span >   < span class = "keywordtype" > size_t< / span > nb,< / div >
< div class = "line" > < a name = "l00518" > < / a > < span class = "lineno" > 518< / span >   < span class = "keywordtype" > size_t< / span > code_size,< / div >
< div class = "line" > < a name = "l00519" > < / a > < span class = "lineno" > 519< / span >   < span class = "keywordtype" > int< / span > ordered = < span class = "keyword" > true< / span > );< / 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 = "comment" > < / span > < / div >
< div class = "line" > < a name = "l00523" > < / a > < span class = "lineno" > 523< / span >   < span class = "comment" > /** This class maintains a list of best distances seen so far.< / span > < / div >
< div class = "line" > < a name = "l00524" > < / a > < span class = "lineno" > 524< / span >   < span class = "comment" > *< / span > < / div >
< div class = "line" > < a name = "l00525" > < / a > < span class = "lineno" > 525< / span >   < span class = "comment" > * Since the distances are in a limited range (0 to nbit), the< / span > < / div >
< div class = "line" > < a name = "l00526" > < / a > < span class = "lineno" > 526< / span >   < span class = "comment" > * object maintains one list per possible distance, and fills< / span > < / div >
< div class = "line" > < a name = "l00527" > < / a > < span class = "lineno" > 527< / span >   < span class = "comment" > * in only the n-first lists, such that the sum of sizes of the< / span > < / div >
< div class = "line" > < a name = "l00528" > < / a > < span class = "lineno" > 528< / span >   < span class = "comment" > * n lists is below k.< / span > < / div >
< div class = "line" > < a name = "l00529" > < / a > < span class = "lineno" > 529< / span >   < span class = "comment" > */< / span > < / div >
< div class = "line" > < a name = "l00530" > < / a > < span class = "lineno" > 530< / span >   < span class = "keyword" > template< / span > < < span class = "keyword" > class< / span > HammingComputer> < / div >
< div class = "line" > < a name = "l00531" > < / a > < span class = "lineno" > < a class = "line" href = "structfaiss_1_1HCounterState.html" > 531< / a > < / span >   < span class = "keyword" > struct < / span > < a class = "code" href = "structfaiss_1_1HCounterState.html" > HCounterState< / a > {< / div >
< div class = "line" > < a name = "l00532" > < / a > < span class = "lineno" > 532< / span >   < span class = "keywordtype" > int< / span > *counters;< / div >
< div class = "line" > < a name = "l00533" > < / a > < span class = "lineno" > 533< / span >   < span class = "keywordtype" > long< / span > *ids_per_dis;< / div >
< div class = "line" > < a name = "l00534" > < / a > < span class = "lineno" > 534< / span >   < / div >
< div class = "line" > < a name = "l00535" > < / a > < span class = "lineno" > 535< / span >   < a class = "code" href = "structfaiss_1_1HammingComputer.html" > HammingComputer< / a > hc;< / div >
< div class = "line" > < a name = "l00536" > < / a > < span class = "lineno" > 536< / span >   < span class = "keywordtype" > int< / span > thres;< / div >
< div class = "line" > < a name = "l00537" > < / a > < span class = "lineno" > 537< / span >   < span class = "keywordtype" > int< / span > count_lt;< / div >
< div class = "line" > < a name = "l00538" > < / a > < span class = "lineno" > 538< / span >   < span class = "keywordtype" > int< / span > count_eq;< / div >
< div class = "line" > < a name = "l00539" > < / a > < span class = "lineno" > 539< / span >   < span class = "keywordtype" > int< / span > k;< / div >
< div class = "line" > < a name = "l00540" > < / a > < span class = "lineno" > 540< / span >   < / div >
< div class = "line" > < a name = "l00541" > < / a > < span class = "lineno" > 541< / span >   < a class = "code" href = "structfaiss_1_1HCounterState.html" > HCounterState< / a > (< span class = "keywordtype" > int< / span > *counters, < span class = "keywordtype" > long< / span > *ids_per_dis,< / div >
< div class = "line" > < a name = "l00542" > < / a > < span class = "lineno" > 542< / span >   < span class = "keyword" > const< / span > uint8_t *x, < span class = "keywordtype" > int< / span > d, < span class = "keywordtype" > int< / span > k)< / div >
< div class = "line" > < a name = "l00543" > < / a > < span class = "lineno" > 543< / span >   : counters(counters),< / div >
< div class = "line" > < a name = "l00544" > < / a > < span class = "lineno" > 544< / span >   ids_per_dis(ids_per_dis),< / div >
< div class = "line" > < a name = "l00545" > < / a > < span class = "lineno" > 545< / span >   hc(x, d / 8),< / div >
< div class = "line" > < a name = "l00546" > < / a > < span class = "lineno" > 546< / span >   thres(d + 1),< / div >
< div class = "line" > < a name = "l00547" > < / a > < span class = "lineno" > 547< / span >   count_lt(0),< / div >
< div class = "line" > < a name = "l00548" > < / a > < span class = "lineno" > 548< / span >   count_eq(0),< / div >
< div class = "line" > < a name = "l00549" > < / a > < span class = "lineno" > 549< / span >   k(k) {}< / div >
< div class = "line" > < a name = "l00550" > < / a > < span class = "lineno" > 550< / span >   < / div >
< div class = "line" > < a name = "l00551" > < / a > < span class = "lineno" > 551< / span >   < span class = "keywordtype" > void< / span > update_counter(< span class = "keyword" > const< / span > uint8_t *y, < span class = "keywordtype" > size_t< / span > j) {< / div >
< div class = "line" > < a name = "l00552" > < / a > < span class = "lineno" > 552< / span >   int32_t dis = hc.hamming(y);< / div >
< div class = "line" > < a name = "l00553" > < / a > < span class = "lineno" > 553< / span >   < / div >
< div class = "line" > < a name = "l00554" > < / a > < span class = "lineno" > 554< / span >   < span class = "keywordflow" > if< / span > (dis < = thres) {< / div >
< div class = "line" > < a name = "l00555" > < / a > < span class = "lineno" > 555< / span >   < span class = "keywordflow" > if< / span > (dis < thres) {< / div >
< div class = "line" > < a name = "l00556" > < / a > < span class = "lineno" > 556< / span >   ids_per_dis[dis * k + counters[dis]++] = j;< / div >
< div class = "line" > < a name = "l00557" > < / a > < span class = "lineno" > 557< / span >   ++count_lt;< / div >
< div class = "line" > < a name = "l00558" > < / a > < span class = "lineno" > 558< / span >   < span class = "keywordflow" > while< / span > (count_lt == k & & thres > 0) {< / div >
< div class = "line" > < a name = "l00559" > < / a > < span class = "lineno" > 559< / span >   --thres;< / div >
< div class = "line" > < a name = "l00560" > < / a > < span class = "lineno" > 560< / span >   count_eq = counters[thres];< / div >
< div class = "line" > < a name = "l00561" > < / a > < span class = "lineno" > 561< / span >   count_lt -= count_eq;< / div >
< div class = "line" > < a name = "l00562" > < / a > < span class = "lineno" > 562< / span >   }< / div >
< div class = "line" > < a name = "l00563" > < / a > < span class = "lineno" > 563< / span >   } < span class = "keywordflow" > else< / span > < span class = "keywordflow" > if< / span > (count_eq < k) {< / div >
< div class = "line" > < a name = "l00564" > < / a > < span class = "lineno" > 564< / span >   ids_per_dis[dis * k + count_eq++] = j;< / div >
< div class = "line" > < a name = "l00565" > < / a > < span class = "lineno" > 565< / span >   counters[dis] = count_eq;< / 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 >   }< / div >
< div class = "line" > < a name = "l00568" > < / a > < span class = "lineno" > 568< / span >   }< / div >
< div class = "line" > < a name = "l00569" > < / a > < span class = "lineno" > 569< / span >   };< / 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 = "comment" > // namespace faiss< / span > < / div >
< div class = "line" > < a name = "l00573" > < / a > < span class = "lineno" > 573< / span >   < / 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 >   < span class = "preprocessor" > #endif < / span > < span class = "comment" > /* FAISS_hamming_h */< / span > < span class = "preprocessor" > < / span > < / div >
< div class = "ttc" id = "namespacefaiss_html_aef2e95991f435b0103db0efe07edff81" > < div class = "ttname" > < a href = "namespacefaiss.html#aef2e95991f435b0103db0efe07edff81" > faiss::hammings_knn_hc< / a > < / div > < div class = "ttdeci" > void hammings_knn_hc(int_maxheap_array_t *ha, const uint8_t *a, const uint8_t *b, size_t nb, size_t ncodes, int order)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8cpp_source.html#l00518" > hamming.cpp:518< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputerM4_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputerM4.html" > faiss::HammingComputerM4< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00371" > hamming.h:371< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputer_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputer.html" > faiss::HammingComputer< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00403" > hamming.h:403< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputer20_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputer20.html" > faiss::HammingComputer20< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00246" > hamming.h:246< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1GenHammingComputer16_html" > < div class = "ttname" > < a href = "structfaiss_1_1GenHammingComputer16.html" > faiss::GenHammingComputer16< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00455" > hamming.h:455< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1GenHammingComputer8_html" > < div class = "ttname" > < a href = "structfaiss_1_1GenHammingComputer8.html" > faiss::GenHammingComputer8< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00440" > hamming.h:440< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HCounterState_html" > < div class = "ttname" > < a href = "structfaiss_1_1HCounterState.html" > faiss::HCounterState< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00531" > hamming.h:531< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_aa9ac586642ba474949a007546ab05592" > < div class = "ttname" > < a href = "namespacefaiss.html#aa9ac586642ba474949a007546ab05592" > faiss::hammings_knn_mc< / a > < / div > < div class = "ttdeci" > void hammings_knn_mc(const uint8_t *a, const uint8_t *b, size_t na, size_t nb, size_t k, size_t ncodes, int32_t *distances, long *labels)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8cpp_source.html#l00556" > hamming.cpp:556< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputer8_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputer8.html" > faiss::HammingComputer8< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00201" > hamming.h:201< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputer64_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputer64.html" > faiss::HammingComputer64< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00292" > hamming.h:292< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputer16_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputer16.html" > faiss::HammingComputer16< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00222" > hamming.h:222< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputer4_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputer4.html" > faiss::HammingComputer4< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00181" > hamming.h:181< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1GenHammingComputerM8_html" > < div class = "ttname" > < a href = "structfaiss_1_1GenHammingComputerM8.html" > faiss::GenHammingComputerM8< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00490" > hamming.h:490< / a > < / div > < / div >
2017-06-21 21:54:28 +08:00
< div class = "ttc" id = "structfaiss_1_1HeapArray_html" > < div class = "ttname" > < a href = "structfaiss_1_1HeapArray.html" > faiss::HeapArray< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "Heap_8h_source.html#l00350" > Heap.h:350< / a > < / div > < / div >
2018-12-20 00:48:35 +08:00
< div class = "ttc" id = "structfaiss_1_1HammingComputer32_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputer32.html" > faiss::HammingComputer32< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00269" > hamming.h:269< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1GenHammingComputer32_html" > < div class = "ttname" > < a href = "structfaiss_1_1GenHammingComputer32.html" > faiss::GenHammingComputer32< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00471" > hamming.h:471< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputerDefault_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputerDefault.html" > faiss::HammingComputerDefault< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00319" > hamming.h:319< / a > < / div > < / div >
< div class = "ttc" id = "structfaiss_1_1HammingComputerM8_html" > < div class = "ttname" > < a href = "structfaiss_1_1HammingComputerM8.html" > faiss::HammingComputerM8< / a > < / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8h_source.html#l00344" > hamming.h:344< / a > < / div > < / div >
< div class = "ttc" id = "namespacefaiss_html_a9c1131631ad4314ba716372fe0d1dea6" > < div class = "ttname" > < a href = "namespacefaiss.html#a9c1131631ad4314ba716372fe0d1dea6" > faiss::generalized_hammings_knn_hc< / a > < / div > < div class = "ttdeci" > void generalized_hammings_knn_hc(int_maxheap_array_t *ha, const uint8_t *a, const uint8_t *b, size_t nb, size_t code_size, int ordered)< / div > < div class = "ttdef" > < b > Definition:< / b > < a href = "hamming_8cpp_source.html#l00729" > hamming.cpp:729< / a > < / div > < / div >
2017-02-23 06:26:44 +08:00
< / div > <!-- fragment --> < / div > <!-- contents -->
<!-- start footer part -->
< hr class = "footer" / > < address class = "footer" > < small >
Generated by   < a href = "http://www.doxygen.org/index.html" >
< img class = "footer" src = "doxygen.png" alt = "doxygen" / >
< / a > 1.8.5
< / small > < / address >
< / body >
< / html >
