blob: 85230a9346791aea18a4e7bf837c110d71d1461a [file] [log] [blame]
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "https://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 1.9.1"/>
<meta name="viewport" content="width=device-width, initial-scale=1"/>
<title>datasketches-cpp: cpc/include/kxp_byte_lookup.hpp Source File</title>
<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/searchdata.js"></script>
<script type="text/javascript" src="search/search.js"></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 id="projectalign" style="padding-left: 0.5em;">
<div id="projectname">datasketches-cpp
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- end header part -->
<!-- Generated by Doxygen 1.9.1 -->
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
var searchBox = new SearchBox("searchBox", "search",false,'Search','.html');
/* @license-end */
</script>
<script type="text/javascript" src="menudata.js"></script>
<script type="text/javascript" src="menu.js"></script>
<script type="text/javascript">
/* @license magnet:?xt=urn:btih:cf05388f2679ee054f2beb29a391d25f4e673ac3&amp;dn=gpl-2.0.txt GPL-v2 */
$(function() {
initMenu('',true,false,'search.php','Search');
$(document).ready(function() { init_search(); });
});
/* @license-end */</script>
<div id="main-nav"></div>
<!-- window showing the filter options -->
<div id="MSearchSelectWindow"
onmouseover="return searchBox.OnSearchSelectShow()"
onmouseout="return searchBox.OnSearchSelectHide()"
onkeydown="return searchBox.OnSearchSelectKey(event)">
</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 id="nav-path" class="navpath">
<ul>
<li class="navelem"><a class="el" href="dir_82f3a10095a8f2296c0cf5c491a57b02.html">cpc</a></li><li class="navelem"><a class="el" href="dir_fabb7854c43508dcbf81254d1daad42f.html">include</a></li> </ul>
</div>
</div><!-- top -->
<div class="header">
<div class="headertitle">
<div class="title">kxp_byte_lookup.hpp</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">/*</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment"> * Licensed to the Apache Software Foundation (ASF) under one</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<span class="comment"> * or more contributor license agreements. See the NOTICE file</span></div>
<div class="line"><a name="l00004"></a><span class="lineno"> 4</span>&#160;<span class="comment"> * distributed with this work for additional information</span></div>
<div class="line"><a name="l00005"></a><span class="lineno"> 5</span>&#160;<span class="comment"> * regarding copyright ownership. The ASF licenses this file</span></div>
<div class="line"><a name="l00006"></a><span class="lineno"> 6</span>&#160;<span class="comment"> * to you under the Apache License, Version 2.0 (the</span></div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="comment"> * &quot;License&quot;); you may not use this file except in compliance</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;<span class="comment"> * with the License. You may obtain a copy of the License at</span></div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="comment"> * http://www.apache.org/licenses/LICENSE-2.0</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="comment"> *</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="comment"> * Unless required by applicable law or agreed to in writing,</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="comment"> * software distributed under the License is distributed on an</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="comment"> * &quot;AS IS&quot; BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;<span class="comment"> * KIND, either express or implied. See the License for the</span></div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="comment"> * specific language governing permissions and limitations</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;<span class="comment"> * under the License.</span></div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="comment"> */</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160; </div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;<span class="preprocessor">#ifndef KXP_BYTE_LOOKUP_HPP_</span></div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="preprocessor">#define KXP_BYTE_LOOKUP_HPP_</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160; </div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;<span class="keyword">namespace </span><a class="code" href="namespacedatasketches.html">datasketches</a> {</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; </div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160;<span class="comment">// the table was created by the following procedure:</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; </div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;<span class="comment">//void fill_kxp_byte_table() {</span></div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="comment">// for (int byte = 0; byte &lt; 256; byte++) {</span></div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="comment">// double sum = 0.0;</span></div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;<span class="comment">// for (int col = 0; col &lt; 8; col++) {</span></div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="comment">// const uint8_t bit = (byte &gt;&gt; col) &amp; 1;</span></div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;<span class="comment">// if (bit == 0) { // note the inverted logic</span></div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="comment">// sum += INVERSE_POWERS_OF_2[col + 1]; // note the &quot;+1&quot;</span></div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160;<span class="comment">// kxp_byte_table[byte] = sum;</span></div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160;<span class="comment">// printf(&quot;%.17g&quot;, kxp_byte_table[byte]);</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160;<span class="comment">// if (byte != 255) printf(&quot;, &quot;);</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160;<span class="comment">// if ((byte + 1) % 8 == 0) printf(&quot;\n&quot;);</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160;<span class="comment">// }</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160;<span class="comment">//}</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; </div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160;<span class="keyword">static</span> <span class="keyword">const</span> <span class="keywordtype">double</span> KXP_BYTE_TABLE[256] = {</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; 0.99609375, 0.49609375, 0.74609375, 0.24609375, 0.87109375, 0.37109375, 0.62109375, 0.12109375,</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; 0.93359375, 0.43359375, 0.68359375, 0.18359375, 0.80859375, 0.30859375, 0.55859375, 0.05859375,</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; 0.96484375, 0.46484375, 0.71484375, 0.21484375, 0.83984375, 0.33984375, 0.58984375, 0.08984375,</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; 0.90234375, 0.40234375, 0.65234375, 0.15234375, 0.77734375, 0.27734375, 0.52734375, 0.02734375,</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; 0.98046875, 0.48046875, 0.73046875, 0.23046875, 0.85546875, 0.35546875, 0.60546875, 0.10546875,</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; 0.91796875, 0.41796875, 0.66796875, 0.16796875, 0.79296875, 0.29296875, 0.54296875, 0.04296875,</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; 0.94921875, 0.44921875, 0.69921875, 0.19921875, 0.82421875, 0.32421875, 0.57421875, 0.07421875,</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; 0.88671875, 0.38671875, 0.63671875, 0.13671875, 0.76171875, 0.26171875, 0.51171875, 0.01171875,</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; 0.98828125, 0.48828125, 0.73828125, 0.23828125, 0.86328125, 0.36328125, 0.61328125, 0.11328125,</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; 0.92578125, 0.42578125, 0.67578125, 0.17578125, 0.80078125, 0.30078125, 0.55078125, 0.05078125,</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160; 0.95703125, 0.45703125, 0.70703125, 0.20703125, 0.83203125, 0.33203125, 0.58203125, 0.08203125,</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160; 0.89453125, 0.39453125, 0.64453125, 0.14453125, 0.76953125, 0.26953125, 0.51953125, 0.01953125,</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160; 0.97265625, 0.47265625, 0.72265625, 0.22265625, 0.84765625, 0.34765625, 0.59765625, 0.09765625,</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; 0.91015625, 0.41015625, 0.66015625, 0.16015625, 0.78515625, 0.28515625, 0.53515625, 0.03515625,</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; 0.94140625, 0.44140625, 0.69140625, 0.19140625, 0.81640625, 0.31640625, 0.56640625, 0.06640625,</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; 0.87890625, 0.37890625, 0.62890625, 0.12890625, 0.75390625, 0.25390625, 0.50390625, 0.00390625,</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; 0.9921875, 0.4921875, 0.7421875, 0.2421875, 0.8671875, 0.3671875, 0.6171875, 0.1171875,</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160; 0.9296875, 0.4296875, 0.6796875, 0.1796875, 0.8046875, 0.3046875, 0.5546875, 0.0546875,</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; 0.9609375, 0.4609375, 0.7109375, 0.2109375, 0.8359375, 0.3359375, 0.5859375, 0.0859375,</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; 0.8984375, 0.3984375, 0.6484375, 0.1484375, 0.7734375, 0.2734375, 0.5234375, 0.0234375,</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; 0.9765625, 0.4765625, 0.7265625, 0.2265625, 0.8515625, 0.3515625, 0.6015625, 0.1015625,</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; 0.9140625, 0.4140625, 0.6640625, 0.1640625, 0.7890625, 0.2890625, 0.5390625, 0.0390625,</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; 0.9453125, 0.4453125, 0.6953125, 0.1953125, 0.8203125, 0.3203125, 0.5703125, 0.0703125,</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; 0.8828125, 0.3828125, 0.6328125, 0.1328125, 0.7578125, 0.2578125, 0.5078125, 0.0078125,</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; 0.984375, 0.484375, 0.734375, 0.234375, 0.859375, 0.359375, 0.609375, 0.109375,</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; 0.921875, 0.421875, 0.671875, 0.171875, 0.796875, 0.296875, 0.546875, 0.046875,</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; 0.953125, 0.453125, 0.703125, 0.203125, 0.828125, 0.328125, 0.578125, 0.078125,</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; 0.890625, 0.390625, 0.640625, 0.140625, 0.765625, 0.265625, 0.515625, 0.015625,</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; 0.96875, 0.46875, 0.71875, 0.21875, 0.84375, 0.34375, 0.59375, 0.09375,</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; 0.90625, 0.40625, 0.65625, 0.15625, 0.78125, 0.28125, 0.53125, 0.03125,</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; 0.9375, 0.4375, 0.6875, 0.1875, 0.8125, 0.3125, 0.5625, 0.0625,</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160; 0.875, 0.375, 0.625, 0.125, 0.75, 0.25, 0.5, 0</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;};</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160; </div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160;} <span class="comment">/* namespace datasketches */</span></div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160; </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;<span class="preprocessor">#endif</span></div>
<div class="ttc" id="anamespacedatasketches_html"><div class="ttname"><a href="namespacedatasketches.html">datasketches</a></div><div class="ttdoc">DataSketches namespace.</div><div class="ttdef"><b>Definition:</b> binomial_bounds.hpp:38</div></div>
</div><!-- fragment --></div><!-- contents -->
<!-- start footer part -->
<hr class="footer"/><address class="footer"><small>
Generated by&#160;<a href="https://www.doxygen.org/index.html"><img class="footer" src="doxygen.svg" width="104" height="31" alt="doxygen"/></a> 1.9.1
</small></address>
</body>
</html>