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<div class="title">IndexFlat_c.cpp</div> </div>
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">/**</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment"> * Copyright (c) 2015-present, Facebook, Inc.</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment"> * All rights reserved.</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment"> *</span></div>
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<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>
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<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>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="comment"> */</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="comment">// Copyright 2004-present Facebook. All Rights Reserved.</span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> <span class="comment">// -*- c++ -*-</span></div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> </div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "IndexFlat_c.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "IndexFlat.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> <span class="preprocessor">#include "Index.h"</span></div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#include "macros_impl.h"</span></div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">extern</span> <span class="stringliteral">"C"</span> {</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> </div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="keyword">using</span> <a class="code" href="structfaiss_1_1Index.html">faiss::Index</a>;</div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="keyword">using</span> <a class="code" href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a>;</div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">using</span> <a class="code" href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a>;</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="keyword">using</span> <a class="code" href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a>;</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="keyword">using</span> <a class="code" href="structfaiss_1_1IndexFlatL2BaseShift.html">faiss::IndexFlatL2BaseShift</a>;</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span> <span class="keyword">using</span> <a class="code" href="structfaiss_1_1IndexRefineFlat.html">faiss::IndexRefineFlat</a>;</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="keyword">using</span> <a class="code" href="structfaiss_1_1IndexFlat1D.html">faiss::IndexFlat1D</a>;</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span> </div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span> DEFINE_DESTRUCTOR(<a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a>)</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> DEFINE_INDEX_DOWNCAST(<a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a>)</div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span> </div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> <span class="keywordtype">int</span> faiss_IndexFlat_new(FaissIndexFlat** p_index) {</div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlat*<span class="keyword">></span>(<span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a>());</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> }</div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> </div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="keywordtype">int</span> faiss_IndexFlat_new_with(FaissIndexFlat** p_index, idx_t d, FaissMetricType metric) {</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a>(d, static_cast<faiss::MetricType>(metric));</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlat*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> }</div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> </div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="keywordtype">void</span> faiss_IndexFlat_xb(FaissIndexFlat* index, <span class="keywordtype">float</span>** p_xb, <span class="keywordtype">size_t</span>* p_size) {</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  <span class="keyword">auto</span>& xb = <span class="keyword">reinterpret_cast<</span><a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a>*<span class="keyword">></span>(index)->xb;</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  *p_xb = xb.data();</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (p_size) {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  *p_size = xb.size();</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  }</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> }</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="keywordtype">int</span> faiss_IndexFlat_compute_distance_subset(</div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  FaissIndex* index,</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  idx_t n,</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keyword">const</span> <span class="keywordtype">float</span> *x,</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  idx_t k,</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keywordtype">float</span> *distances,</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keyword">const</span> idx_t *labels) {</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>  <span class="keyword">reinterpret_cast<</span><a class="code" href="structfaiss_1_1IndexFlat.html">IndexFlat</a>*<span class="keyword">></span>(index)->compute_distance_subset(</div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  n, x, k, distances, labels);</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> }</div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="keywordtype">int</span> faiss_IndexFlatIP_new(FaissIndexFlatIP** p_index) {</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>  <a class="code" href="structfaiss_1_1IndexFlatIP.html">IndexFlatIP</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatIP.html">IndexFlatIP</a>();</div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlatIP*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> }</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a name="l00075"></a><span class="lineno"> 75</span> <span class="keywordtype">int</span> faiss_IndexFlatIP_new_with(FaissIndexFlatIP** p_index, idx_t d) {</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>  <a class="code" href="structfaiss_1_1IndexFlatIP.html">IndexFlatIP</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatIP.html">IndexFlatIP</a>(d);</div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlatIP*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> }</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> </div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="keywordtype">int</span> faiss_IndexFlatL2_new(FaissIndexFlatL2** p_index) {</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <a class="code" href="structfaiss_1_1IndexFlatL2.html">IndexFlatL2</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatL2.html">IndexFlatL2</a>();</div>
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<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlatL2*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> }</div>
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<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="keywordtype">int</span> faiss_IndexFlatL2_new_with(FaissIndexFlatL2** p_index, idx_t d) {</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <a class="code" href="structfaiss_1_1IndexFlatL2.html">IndexFlatL2</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatL2.html">IndexFlatL2</a>(d);</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlatL2*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00097"></a><span class="lineno"> 97</span> }</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span> </div>
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<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="keywordtype">int</span> faiss_IndexFlatL2BaseShift_new(FaissIndexFlatL2BaseShift** p_index, idx_t d, <span class="keywordtype">size_t</span> nshift, <span class="keyword">const</span> <span class="keywordtype">float</span> *shift) {</div>
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<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>  <a class="code" href="structfaiss_1_1IndexFlatL2BaseShift.html">IndexFlatL2BaseShift</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlatL2BaseShift.html">IndexFlatL2BaseShift</a>(d, nshift, shift);</div>
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlatL2BaseShift*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> }</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> </div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="keywordtype">int</span> faiss_IndexRefineFlat_new(FaissIndexRefineFlat** p_index, FaissIndex* base_index) {</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  <a class="code" href="structfaiss_1_1IndexRefineFlat.html">IndexRefineFlat</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexRefineFlat.html">IndexRefineFlat</a>(</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  reinterpret_cast<faiss::Index*>(base_index));</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexRefineFlat*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> }</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> </div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> DEFINE_DESTRUCTOR(<a class="code" href="structfaiss_1_1IndexRefineFlat.html">IndexRefineFlat</a>)</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span> </div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span> int faiss_IndexFlat1D_new(FaissIndexFlat1D** p_index) {</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  <a class="code" href="structfaiss_1_1IndexFlat1D.html">IndexFlat1D</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlat1D.html">IndexFlat1D</a>();</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlat1D*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span> }</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keywordtype">int</span> faiss_IndexFlat1D_new_with(FaissIndexFlat1D** p_index, <span class="keywordtype">int</span> continuous_update) {</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <a class="code" href="structfaiss_1_1IndexFlat1D.html">IndexFlat1D</a>* index = <span class="keyword">new</span> <a class="code" href="structfaiss_1_1IndexFlat1D.html">IndexFlat1D</a>(static_cast<bool>(continuous_update));</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  *p_index = <span class="keyword">reinterpret_cast<</span>FaissIndexFlat1D*<span class="keyword">></span>(index);</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> }</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="keywordtype">int</span> faiss_IndexFlat1D_update_permutation(FaissIndexFlat1D* index) {</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">try</span> {</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  <span class="keyword">reinterpret_cast<</span><a class="code" href="structfaiss_1_1IndexFlat1D.html">IndexFlat1D</a>*<span class="keyword">></span>(index)->update_permutation();</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  <span class="keywordflow">return</span> 0;</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  } CATCH_AND_HANDLE</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> }</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> </div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> }</div>
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<div class="ttc" id="structfaiss_1_1IndexFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexFlat.html">faiss::IndexFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00022">IndexFlat.h:22</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlat1D_html"><div class="ttname"><a href="structfaiss_1_1IndexFlat1D.html">faiss::IndexFlat1D</a></div><div class="ttdoc">optimized version for 1D &quot;vectors&quot; </div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00137">IndexFlat.h:137</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlatL2_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatL2.html">faiss::IndexFlatL2</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00078">IndexFlat.h:78</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlatIP_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatIP.html">faiss::IndexFlatIP</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00072">IndexFlat.h:72</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexRefineFlat_html"><div class="ttname"><a href="structfaiss_1_1IndexRefineFlat.html">faiss::IndexRefineFlat</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00102">IndexFlat.h:102</a></div></div>
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<div class="ttc" id="structfaiss_1_1IndexFlatL2BaseShift_html"><div class="ttname"><a href="structfaiss_1_1IndexFlatL2BaseShift.html">faiss::IndexFlatL2BaseShift</a></div><div class="ttdef"><b>Definition:</b> <a href="IndexFlat_8h_source.html#l00085">IndexFlat.h:85</a></div></div>
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<div class="ttc" id="structfaiss_1_1Index_html"><div class="ttname"><a href="structfaiss_1_1Index.html">faiss::Index</a></div><div class="ttdef"><b>Definition:</b> <a href="Index_8h_source.html#l00062">Index.h:62</a></div></div>
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