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http://git-wip-us.apache.org/repos/asf/commons-rng/blob/d1b3113a/commons-rng-core/site-content/.svn/pristine/27/278c018896cb37ac9ccdeef8e3b47ea647561b8b.svn-base ---------------------------------------------------------------------- diff --git a/commons-rng-core/site-content/.svn/pristine/27/278c018896cb37ac9ccdeef8e3b47ea647561b8b.svn-base b/commons-rng-core/site-content/.svn/pristine/27/278c018896cb37ac9ccdeef8e3b47ea647561b8b.svn-base new file mode 100644 index 0000000..2e86efa --- /dev/null +++ b/commons-rng-core/site-content/.svn/pristine/27/278c018896cb37ac9ccdeef8e3b47ea647561b8b.svn-base @@ -0,0 +1,63 @@ +<!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"; xml:lang="en" lang="en"> +<head><meta http-equiv="content-type" content="text/html; charset=UTF-8" /> +<title>Long2LongArray xref</title> +<link type="text/css" rel="stylesheet" href="../../../../../../stylesheet.css" /> +</head> +<body> +<div id="overview"><a href="../../../../../../../apidocs/org/apache/commons/rng/internal/util/Long2LongArray.html">View Javadoc</a></div><pre> +<a class="jxr_linenumber" name="L1" href="#L1">1</a> <em class="jxr_comment">/*</em> +<a class="jxr_linenumber" name="L2" href="#L2">2</a> <em class="jxr_comment"> * Licensed to the Apache Software Foundation (ASF) under one or more</em> +<a class="jxr_linenumber" name="L3" href="#L3">3</a> <em class="jxr_comment"> * contributor license agreements. See the NOTICE file distributed with</em> +<a class="jxr_linenumber" name="L4" href="#L4">4</a> <em class="jxr_comment"> * this work for additional information regarding copyright ownership.</em> +<a class="jxr_linenumber" name="L5" href="#L5">5</a> <em class="jxr_comment"> * The ASF licenses this file to You under the Apache License, Version 2.0</em> +<a class="jxr_linenumber" name="L6" href="#L6">6</a> <em class="jxr_comment"> * (the "License"); you may not use this file except in compliance with</em> +<a class="jxr_linenumber" name="L7" href="#L7">7</a> <em class="jxr_comment"> * the License. You may obtain a copy of the License at</em> +<a class="jxr_linenumber" name="L8" href="#L8">8</a> <em class="jxr_comment"> *</em> +<a class="jxr_linenumber" name="L9" href="#L9">9</a> <em class="jxr_comment"> * <a href="http://www.apache.org/licenses/LICENSE-2."; target="alexandria_uri">http://www.apache.org/licenses/LICENSE-2.</a>0</em> +<a class="jxr_linenumber" name="L10" href="#L10">10</a> <em class="jxr_comment"> *</em> +<a class="jxr_linenumber" name="L11" href="#L11">11</a> <em class="jxr_comment"> * Unless required by applicable law or agreed to in writing, software</em> +<a class="jxr_linenumber" name="L12" href="#L12">12</a> <em class="jxr_comment"> * distributed under the License is distributed on an "AS IS" BASIS,</em> +<a class="jxr_linenumber" name="L13" href="#L13">13</a> <em class="jxr_comment"> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.</em> +<a class="jxr_linenumber" name="L14" href="#L14">14</a> <em class="jxr_comment"> * See the License for the specific language governing permissions and</em> +<a class="jxr_linenumber" name="L15" href="#L15">15</a> <em class="jxr_comment"> * limitations under the License.</em> +<a class="jxr_linenumber" name="L16" href="#L16">16</a> <em class="jxr_comment"> */</em> +<a class="jxr_linenumber" name="L17" href="#L17">17</a> <strong class="jxr_keyword">package</strong> org.apache.commons.rng.internal.util; +<a class="jxr_linenumber" name="L18" href="#L18">18</a> +<a class="jxr_linenumber" name="L19" href="#L19">19</a> <strong class="jxr_keyword">import</strong> org.apache.commons.rng.internal.source64.SplitMix64; +<a class="jxr_linenumber" name="L20" href="#L20">20</a> +<a class="jxr_linenumber" name="L21" href="#L21">21</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="L22" href="#L22">22</a> <em class="jxr_javadoccomment"> * Uses a {@code Long} value to seed a {@link SplitMix64} RNG and</em> +<a class="jxr_linenumber" name="L23" href="#L23">23</a> <em class="jxr_javadoccomment"> * create a {@code long[]} with the requested number of random</em> +<a class="jxr_linenumber" name="L24" href="#L24">24</a> <em class="jxr_javadoccomment"> * values.</em> +<a class="jxr_linenumber" name="L25" href="#L25">25</a> <em class="jxr_javadoccomment"> *</em> +<a class="jxr_linenumber" name="L26" href="#L26">26</a> <em class="jxr_javadoccomment"> * @since 1.0</em> +<a class="jxr_linenumber" name="L27" href="#L27">27</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="L28" href="#L28">28</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">class</strong> <a href="../../../../../../org/apache/commons/rng/internal/util/Long2LongArray.html">Long2LongArray</a> <strong class="jxr_keyword">implements</strong> SeedConverter<Long, <strong class="jxr_keyword">long</strong>[]> { +<a class="jxr_linenumber" name="L29" href="#L29">29</a> <em class="jxr_javadoccomment">/** Size of the output array. */</em> +<a class="jxr_linenumber" name="L30" href="#L30">30</a> <strong class="jxr_keyword">private</strong> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">int</strong> size; +<a class="jxr_linenumber" name="L31" href="#L31">31</a> +<a class="jxr_linenumber" name="L32" href="#L32">32</a> <em class="jxr_javadoccomment">/**</em> +<a class="jxr_linenumber" name="L33" href="#L33">33</a> <em class="jxr_javadoccomment"> * @param size Size of the output array.</em> +<a class="jxr_linenumber" name="L34" href="#L34">34</a> <em class="jxr_javadoccomment"> */</em> +<a class="jxr_linenumber" name="L35" href="#L35">35</a> <strong class="jxr_keyword">public</strong> <a href="../../../../../../org/apache/commons/rng/internal/util/Long2LongArray.html">Long2LongArray</a>(<strong class="jxr_keyword">int</strong> size) { +<a class="jxr_linenumber" name="L36" href="#L36">36</a> <strong class="jxr_keyword">this</strong>.size = size; +<a class="jxr_linenumber" name="L37" href="#L37">37</a> } +<a class="jxr_linenumber" name="L38" href="#L38">38</a> +<a class="jxr_linenumber" name="L39" href="#L39">39</a> <em class="jxr_javadoccomment">/** {@inheritDoc} */</em> +<a class="jxr_linenumber" name="L40" href="#L40">40</a> @Override +<a class="jxr_linenumber" name="L41" href="#L41">41</a> <strong class="jxr_keyword">public</strong> <strong class="jxr_keyword">long</strong>[] convert(Long seed) { +<a class="jxr_linenumber" name="L42" href="#L42">42</a> <strong class="jxr_keyword">final</strong> <strong class="jxr_keyword">long</strong>[] out = <strong class="jxr_keyword">new</strong> <strong class="jxr_keyword">long</strong>[size]; +<a class="jxr_linenumber" name="L43" href="#L43">43</a> <strong class="jxr_keyword">final</strong> <a href="../../../../../../org/apache/commons/rng/internal/source64/SplitMix64.html">SplitMix64</a> rng = <strong class="jxr_keyword">new</strong> <a href="../../../../../../org/apache/commons/rng/internal/source64/SplitMix64.html">SplitMix64</a>(seed); +<a class="jxr_linenumber" name="L44" href="#L44">44</a> <strong class="jxr_keyword">for</strong> (<strong class="jxr_keyword">int</strong> i = 0; i < size; i++) { +<a class="jxr_linenumber" name="L45" href="#L45">45</a> out[i] = rng.nextLong(); +<a class="jxr_linenumber" name="L46" href="#L46">46</a> } +<a class="jxr_linenumber" name="L47" href="#L47">47</a> +<a class="jxr_linenumber" name="L48" href="#L48">48</a> <strong class="jxr_keyword">return</strong> out; +<a class="jxr_linenumber" name="L49" href="#L49">49</a> } +<a class="jxr_linenumber" name="L50" href="#L50">50</a> } +</pre> +<hr/> +<div id="footer">Copyright © 2016 <a href="https://www.apache.org/";>The Apache Software Foundation</a>. 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See the NOTICE file distributed with<a name="line.3"></a> +<span class="sourceLineNo">004</span> * this work for additional information regarding copyright ownership.<a name="line.4"></a> +<span class="sourceLineNo">005</span> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a> +<span class="sourceLineNo">006</span> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a> +<span class="sourceLineNo">007</span> * the License. You may obtain a copy of the License at<a name="line.7"></a> +<span class="sourceLineNo">008</span> *<a name="line.8"></a> +<span class="sourceLineNo">009</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a> +<span class="sourceLineNo">010</span> *<a name="line.10"></a> +<span class="sourceLineNo">011</span> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a> +<span class="sourceLineNo">012</span> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a> +<span class="sourceLineNo">013</span> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a> +<span class="sourceLineNo">014</span> * See the License for the specific language governing permissions and<a name="line.14"></a> +<span class="sourceLineNo">015</span> * limitations under the License.<a name="line.15"></a> +<span class="sourceLineNo">016</span> */<a name="line.16"></a> +<span class="sourceLineNo">017</span>package org.apache.commons.rng.internal.source32;<a name="line.17"></a> +<span class="sourceLineNo">018</span><a name="line.18"></a> +<span class="sourceLineNo">019</span>/**<a name="line.19"></a> +<span class="sourceLineNo">020</span> * This class implements the WELL19937a pseudo-random number generator<a name="line.20"></a> +<span class="sourceLineNo">021</span> * from Fran&ccedil;ois Panneton, Pierre L'Ecuyer and Makoto Matsumoto.<a name="line.21"></a> +<span class="sourceLineNo">022</span> * <p><a name="line.22"></a> +<span class="sourceLineNo">023</span> * This generator is described in a paper by Fran&ccedil;ois Panneton,<a name="line.23"></a> +<span class="sourceLineNo">024</span> * Pierre L'Ecuyer and Makoto Matsumoto<a name="line.24"></a> +<span class="sourceLineNo">025</span> * <a href="http://www.iro.umontreal.ca/~lecuyer/myftp/papers/wellrng.pdf"><a name="line.25"></a> +<span class="sourceLineNo">026</span> * Improved Long-Period Generators Based on Linear Recurrences Modulo 2</a><a name="line.26"></a> +<span class="sourceLineNo">027</span> * ACM Transactions on Mathematical Software, 32, 1 (2006).<a name="line.27"></a> +<span class="sourceLineNo">028</span> * The errata for the paper are in<a name="line.28"></a> +<span class="sourceLineNo">029</span> * <a href="http://www.iro.umontreal.ca/~lecuyer/myftp/papers/wellrng-errata.txt">wellrng-errata.txt</a>.<a name="line.29"></a> +<span class="sourceLineNo">030</span> * </p><a name="line.30"></a> +<span class="sourceLineNo">031</span> *<a name="line.31"></a> +<span class="sourceLineNo">032</span> * @see <a href="http://www.iro.umontreal.ca/~panneton/WELLRNG.html">WELL Random number generator</a><a name="line.32"></a> +<span class="sourceLineNo">033</span> * @since 1.0<a name="line.33"></a> +<span class="sourceLineNo">034</span> */<a name="line.34"></a> +<span class="sourceLineNo">035</span>public class Well19937a extends AbstractWell {<a name="line.35"></a> +<span class="sourceLineNo">036</span> /** Number of bits in the pool. */<a name="line.36"></a> +<span class="sourceLineNo">037</span> private static final int K = 19937;<a name="line.37"></a> +<span class="sourceLineNo">038</span> /** First parameter of the algorithm. */<a name="line.38"></a> +<span class="sourceLineNo">039</span> private static final int M1 = 70;<a name="line.39"></a> +<span class="sourceLineNo">040</span> /** Second parameter of the algorithm. */<a name="line.40"></a> +<span class="sourceLineNo">041</span> private static final int M2 = 179;<a name="line.41"></a> +<span class="sourceLineNo">042</span> /** Third parameter of the algorithm. */<a name="line.42"></a> +<span class="sourceLineNo">043</span> private static final int M3 = 449;<a name="line.43"></a> +<span class="sourceLineNo">044</span> /** The indirection index table. */<a name="line.44"></a> +<span class="sourceLineNo">045</span> private static final IndexTable TABLE = new IndexTable(K, M1, M2, M3);<a name="line.45"></a> +<span class="sourceLineNo">046</span><a name="line.46"></a> +<span class="sourceLineNo">047</span> /**<a name="line.47"></a> +<span class="sourceLineNo">048</span> * Creates a new random number generator.<a name="line.48"></a> +<span class="sourceLineNo">049</span> *<a name="line.49"></a> +<span class="sourceLineNo">050</span> * @param seed Initial seed.<a name="line.50"></a> +<span class="sourceLineNo">051</span> */<a name="line.51"></a> +<span class="sourceLineNo">052</span> public Well19937a(int[] seed) {<a name="line.52"></a> +<span class="sourceLineNo">053</span> super(K, seed);<a name="line.53"></a> +<span class="sourceLineNo">054</span> }<a name="line.54"></a> +<span class="sourceLineNo">055</span><a name="line.55"></a> +<span class="sourceLineNo">056</span> /** {@inheritDoc} */<a name="line.56"></a> +<span class="sourceLineNo">057</span> @Override<a name="line.57"></a> +<span class="sourceLineNo">058</span> public int next() {<a name="line.58"></a> +<span class="sourceLineNo">059</span> final int indexRm1 = TABLE.getIndexPred(index);<a name="line.59"></a> +<span class="sourceLineNo">060</span> final int indexRm2 = TABLE.getIndexPred2(index);<a name="line.60"></a> +<span class="sourceLineNo">061</span><a name="line.61"></a> +<span class="sourceLineNo">062</span> final int v0 = v[index];<a name="line.62"></a> +<span class="sourceLineNo">063</span> final int vM1 = v[TABLE.getIndexM1(index)];<a name="line.63"></a> +<span class="sourceLineNo">064</span> final int vM2 = v[TABLE.getIndexM2(index)];<a name="line.64"></a> +<span class="sourceLineNo">065</span> final int vM3 = v[TABLE.getIndexM3(index)];<a name="line.65"></a> +<span class="sourceLineNo">066</span><a name="line.66"></a> +<span class="sourceLineNo">067</span> final int z0 = (0x80000000 & v[indexRm1]) ^ (0x7FFFFFFF & v[indexRm2]);<a name="line.67"></a> +<span class="sourceLineNo">068</span> final int z1 = (v0 ^ (v0 << 25)) ^ (vM1 ^ (vM1 >>> 27));<a name="line.68"></a> +<span class="sourceLineNo">069</span> final int z2 = (vM2 >>> 9) ^ (vM3 ^ (vM3 >>> 1));<a name="line.69"></a> +<span class="sourceLineNo">070</span> final int z3 = z1 ^ z2;<a name="line.70"></a> +<span class="sourceLineNo">071</span> final int z4 = z0 ^ (z1 ^ (z1 << 9)) ^ (z2 ^ (z2 << 21)) ^ (z3 ^ (z3 >>> 21));<a name="line.71"></a> +<span class="sourceLineNo">072</span><a name="line.72"></a> +<span class="sourceLineNo">073</span> v[index] = z3;<a name="line.73"></a> +<span class="sourceLineNo">074</span> v[indexRm1] = z4;<a name="line.74"></a> +<span class="sourceLineNo">075</span> v[indexRm2] &= 0x80000000;<a name="line.75"></a> +<span class="sourceLineNo">076</span> index = indexRm1;<a name="line.76"></a> +<span class="sourceLineNo">077</span><a name="line.77"></a> +<span class="sourceLineNo">078</span> return z4;<a name="line.78"></a> +<span class="sourceLineNo">079</span> }<a name="line.79"></a> +<span class="sourceLineNo">080</span>}<a name="line.80"></a> + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +</pre> +</div> +</body> +</html> \ No newline at end of file
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