|
13
|
1 <HTML>
|
|
|
2 <BODY BGCOLOR="white">
|
|
|
3 <PRE>
|
|
|
4 <FONT color="green">001</FONT> /*<a name="line.1"></a>
|
|
|
5 <FONT color="green">002</FONT> * Licensed to the Apache Software Foundation (ASF) under one or more<a name="line.2"></a>
|
|
|
6 <FONT color="green">003</FONT> * contributor license agreements. See the NOTICE file distributed with<a name="line.3"></a>
|
|
|
7 <FONT color="green">004</FONT> * this work for additional information regarding copyright ownership.<a name="line.4"></a>
|
|
|
8 <FONT color="green">005</FONT> * The ASF licenses this file to You under the Apache License, Version 2.0<a name="line.5"></a>
|
|
|
9 <FONT color="green">006</FONT> * (the "License"); you may not use this file except in compliance with<a name="line.6"></a>
|
|
|
10 <FONT color="green">007</FONT> * the License. You may obtain a copy of the License at<a name="line.7"></a>
|
|
|
11 <FONT color="green">008</FONT> *<a name="line.8"></a>
|
|
|
12 <FONT color="green">009</FONT> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.9"></a>
|
|
|
13 <FONT color="green">010</FONT> *<a name="line.10"></a>
|
|
|
14 <FONT color="green">011</FONT> * Unless required by applicable law or agreed to in writing, software<a name="line.11"></a>
|
|
|
15 <FONT color="green">012</FONT> * distributed under the License is distributed on an "AS IS" BASIS,<a name="line.12"></a>
|
|
|
16 <FONT color="green">013</FONT> * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.<a name="line.13"></a>
|
|
|
17 <FONT color="green">014</FONT> * See the License for the specific language governing permissions and<a name="line.14"></a>
|
|
|
18 <FONT color="green">015</FONT> * limitations under the License.<a name="line.15"></a>
|
|
|
19 <FONT color="green">016</FONT> */<a name="line.16"></a>
|
|
|
20 <FONT color="green">017</FONT> package org.apache.commons.math.random;<a name="line.17"></a>
|
|
|
21 <FONT color="green">018</FONT> <a name="line.18"></a>
|
|
|
22 <FONT color="green">019</FONT> import java.util.Random;<a name="line.19"></a>
|
|
|
23 <FONT color="green">020</FONT> <a name="line.20"></a>
|
|
|
24 <FONT color="green">021</FONT> /**<a name="line.21"></a>
|
|
|
25 <FONT color="green">022</FONT> * Extension of <code>java.util.Random</code> wrapping a<a name="line.22"></a>
|
|
|
26 <FONT color="green">023</FONT> * {@link RandomGenerator}.<a name="line.23"></a>
|
|
|
27 <FONT color="green">024</FONT> *<a name="line.24"></a>
|
|
|
28 <FONT color="green">025</FONT> * @since 1.1<a name="line.25"></a>
|
|
|
29 <FONT color="green">026</FONT> * @version $Revision: 811685 $ $Date: 2009-09-05 13:36:48 -0400 (Sat, 05 Sep 2009) $<a name="line.26"></a>
|
|
|
30 <FONT color="green">027</FONT> */<a name="line.27"></a>
|
|
|
31 <FONT color="green">028</FONT> public class RandomAdaptor extends Random implements RandomGenerator {<a name="line.28"></a>
|
|
|
32 <FONT color="green">029</FONT> <a name="line.29"></a>
|
|
|
33 <FONT color="green">030</FONT> /** Serializable version identifier. */<a name="line.30"></a>
|
|
|
34 <FONT color="green">031</FONT> private static final long serialVersionUID = 2306581345647615033L;<a name="line.31"></a>
|
|
|
35 <FONT color="green">032</FONT> <a name="line.32"></a>
|
|
|
36 <FONT color="green">033</FONT> /** Wrapped randomGenerator instance */<a name="line.33"></a>
|
|
|
37 <FONT color="green">034</FONT> private RandomGenerator randomGenerator = null;<a name="line.34"></a>
|
|
|
38 <FONT color="green">035</FONT> <a name="line.35"></a>
|
|
|
39 <FONT color="green">036</FONT> /**<a name="line.36"></a>
|
|
|
40 <FONT color="green">037</FONT> * Prevent instantiation without a generator argument<a name="line.37"></a>
|
|
|
41 <FONT color="green">038</FONT> */<a name="line.38"></a>
|
|
|
42 <FONT color="green">039</FONT> @SuppressWarnings("unused")<a name="line.39"></a>
|
|
|
43 <FONT color="green">040</FONT> private RandomAdaptor() { }<a name="line.40"></a>
|
|
|
44 <FONT color="green">041</FONT> <a name="line.41"></a>
|
|
|
45 <FONT color="green">042</FONT> /**<a name="line.42"></a>
|
|
|
46 <FONT color="green">043</FONT> * Construct a RandomAdaptor wrapping the supplied RandomGenerator.<a name="line.43"></a>
|
|
|
47 <FONT color="green">044</FONT> *<a name="line.44"></a>
|
|
|
48 <FONT color="green">045</FONT> * @param randomGenerator the wrapped generator<a name="line.45"></a>
|
|
|
49 <FONT color="green">046</FONT> */<a name="line.46"></a>
|
|
|
50 <FONT color="green">047</FONT> public RandomAdaptor(RandomGenerator randomGenerator) {<a name="line.47"></a>
|
|
|
51 <FONT color="green">048</FONT> this.randomGenerator = randomGenerator;<a name="line.48"></a>
|
|
|
52 <FONT color="green">049</FONT> }<a name="line.49"></a>
|
|
|
53 <FONT color="green">050</FONT> <a name="line.50"></a>
|
|
|
54 <FONT color="green">051</FONT> /**<a name="line.51"></a>
|
|
|
55 <FONT color="green">052</FONT> * Factory method to create a <code>Random</code> using the supplied<a name="line.52"></a>
|
|
|
56 <FONT color="green">053</FONT> * <code>RandomGenerator</code>.<a name="line.53"></a>
|
|
|
57 <FONT color="green">054</FONT> *<a name="line.54"></a>
|
|
|
58 <FONT color="green">055</FONT> * @param randomGenerator wrapped RandomGenerator instance<a name="line.55"></a>
|
|
|
59 <FONT color="green">056</FONT> * @return a Random instance wrapping the RandomGenerator<a name="line.56"></a>
|
|
|
60 <FONT color="green">057</FONT> */<a name="line.57"></a>
|
|
|
61 <FONT color="green">058</FONT> public static Random createAdaptor(RandomGenerator randomGenerator) {<a name="line.58"></a>
|
|
|
62 <FONT color="green">059</FONT> return new RandomAdaptor(randomGenerator);<a name="line.59"></a>
|
|
|
63 <FONT color="green">060</FONT> }<a name="line.60"></a>
|
|
|
64 <FONT color="green">061</FONT> <a name="line.61"></a>
|
|
|
65 <FONT color="green">062</FONT> /**<a name="line.62"></a>
|
|
|
66 <FONT color="green">063</FONT> * Returns the next pseudorandom, uniformly distributed<a name="line.63"></a>
|
|
|
67 <FONT color="green">064</FONT> * <code>boolean</code> value from this random number generator's<a name="line.64"></a>
|
|
|
68 <FONT color="green">065</FONT> * sequence.<a name="line.65"></a>
|
|
|
69 <FONT color="green">066</FONT> *<a name="line.66"></a>
|
|
|
70 <FONT color="green">067</FONT> * @return the next pseudorandom, uniformly distributed<a name="line.67"></a>
|
|
|
71 <FONT color="green">068</FONT> * <code>boolean</code> value from this random number generator's<a name="line.68"></a>
|
|
|
72 <FONT color="green">069</FONT> * sequence<a name="line.69"></a>
|
|
|
73 <FONT color="green">070</FONT> */<a name="line.70"></a>
|
|
|
74 <FONT color="green">071</FONT> @Override<a name="line.71"></a>
|
|
|
75 <FONT color="green">072</FONT> public boolean nextBoolean() {<a name="line.72"></a>
|
|
|
76 <FONT color="green">073</FONT> return randomGenerator.nextBoolean();<a name="line.73"></a>
|
|
|
77 <FONT color="green">074</FONT> }<a name="line.74"></a>
|
|
|
78 <FONT color="green">075</FONT> <a name="line.75"></a>
|
|
|
79 <FONT color="green">076</FONT> /**<a name="line.76"></a>
|
|
|
80 <FONT color="green">077</FONT> * Generates random bytes and places them into a user-supplied<a name="line.77"></a>
|
|
|
81 <FONT color="green">078</FONT> * byte array. The number of random bytes produced is equal to<a name="line.78"></a>
|
|
|
82 <FONT color="green">079</FONT> * the length of the byte array.<a name="line.79"></a>
|
|
|
83 <FONT color="green">080</FONT> *<a name="line.80"></a>
|
|
|
84 <FONT color="green">081</FONT> * @param bytes the non-null byte array in which to put the<a name="line.81"></a>
|
|
|
85 <FONT color="green">082</FONT> * random bytes<a name="line.82"></a>
|
|
|
86 <FONT color="green">083</FONT> */<a name="line.83"></a>
|
|
|
87 <FONT color="green">084</FONT> @Override<a name="line.84"></a>
|
|
|
88 <FONT color="green">085</FONT> public void nextBytes(byte[] bytes) {<a name="line.85"></a>
|
|
|
89 <FONT color="green">086</FONT> randomGenerator.nextBytes(bytes);<a name="line.86"></a>
|
|
|
90 <FONT color="green">087</FONT> }<a name="line.87"></a>
|
|
|
91 <FONT color="green">088</FONT> <a name="line.88"></a>
|
|
|
92 <FONT color="green">089</FONT> /**<a name="line.89"></a>
|
|
|
93 <FONT color="green">090</FONT> * Returns the next pseudorandom, uniformly distributed<a name="line.90"></a>
|
|
|
94 <FONT color="green">091</FONT> * <code>double</code> value between <code>0.0</code> and<a name="line.91"></a>
|
|
|
95 <FONT color="green">092</FONT> * <code>1.0</code> from this random number generator's sequence.<a name="line.92"></a>
|
|
|
96 <FONT color="green">093</FONT> *<a name="line.93"></a>
|
|
|
97 <FONT color="green">094</FONT> * @return the next pseudorandom, uniformly distributed<a name="line.94"></a>
|
|
|
98 <FONT color="green">095</FONT> * <code>double</code> value between <code>0.0</code> and<a name="line.95"></a>
|
|
|
99 <FONT color="green">096</FONT> * <code>1.0</code> from this random number generator's sequence<a name="line.96"></a>
|
|
|
100 <FONT color="green">097</FONT> */<a name="line.97"></a>
|
|
|
101 <FONT color="green">098</FONT> @Override<a name="line.98"></a>
|
|
|
102 <FONT color="green">099</FONT> public double nextDouble() {<a name="line.99"></a>
|
|
|
103 <FONT color="green">100</FONT> return randomGenerator.nextDouble();<a name="line.100"></a>
|
|
|
104 <FONT color="green">101</FONT> }<a name="line.101"></a>
|
|
|
105 <FONT color="green">102</FONT> <a name="line.102"></a>
|
|
|
106 <FONT color="green">103</FONT> /**<a name="line.103"></a>
|
|
|
107 <FONT color="green">104</FONT> * Returns the next pseudorandom, uniformly distributed <code>float</code><a name="line.104"></a>
|
|
|
108 <FONT color="green">105</FONT> * value between <code>0.0</code> and <code>1.0</code> from this random<a name="line.105"></a>
|
|
|
109 <FONT color="green">106</FONT> * number generator's sequence.<a name="line.106"></a>
|
|
|
110 <FONT color="green">107</FONT> *<a name="line.107"></a>
|
|
|
111 <FONT color="green">108</FONT> * @return the next pseudorandom, uniformly distributed <code>float</code><a name="line.108"></a>
|
|
|
112 <FONT color="green">109</FONT> * value between <code>0.0</code> and <code>1.0</code> from this<a name="line.109"></a>
|
|
|
113 <FONT color="green">110</FONT> * random number generator's sequence<a name="line.110"></a>
|
|
|
114 <FONT color="green">111</FONT> */<a name="line.111"></a>
|
|
|
115 <FONT color="green">112</FONT> @Override<a name="line.112"></a>
|
|
|
116 <FONT color="green">113</FONT> public float nextFloat() {<a name="line.113"></a>
|
|
|
117 <FONT color="green">114</FONT> return randomGenerator.nextFloat();<a name="line.114"></a>
|
|
|
118 <FONT color="green">115</FONT> }<a name="line.115"></a>
|
|
|
119 <FONT color="green">116</FONT> <a name="line.116"></a>
|
|
|
120 <FONT color="green">117</FONT> /**<a name="line.117"></a>
|
|
|
121 <FONT color="green">118</FONT> * Returns the next pseudorandom, Gaussian ("normally") distributed<a name="line.118"></a>
|
|
|
122 <FONT color="green">119</FONT> * <code>double</code> value with mean <code>0.0</code> and standard<a name="line.119"></a>
|
|
|
123 <FONT color="green">120</FONT> * deviation <code>1.0</code> from this random number generator's sequence.<a name="line.120"></a>
|
|
|
124 <FONT color="green">121</FONT> *<a name="line.121"></a>
|
|
|
125 <FONT color="green">122</FONT> * @return the next pseudorandom, Gaussian ("normally") distributed<a name="line.122"></a>
|
|
|
126 <FONT color="green">123</FONT> * <code>double</code> value with mean <code>0.0</code> and<a name="line.123"></a>
|
|
|
127 <FONT color="green">124</FONT> * standard deviation <code>1.0</code> from this random number<a name="line.124"></a>
|
|
|
128 <FONT color="green">125</FONT> * generator's sequence<a name="line.125"></a>
|
|
|
129 <FONT color="green">126</FONT> */<a name="line.126"></a>
|
|
|
130 <FONT color="green">127</FONT> @Override<a name="line.127"></a>
|
|
|
131 <FONT color="green">128</FONT> public double nextGaussian() {<a name="line.128"></a>
|
|
|
132 <FONT color="green">129</FONT> return randomGenerator.nextGaussian();<a name="line.129"></a>
|
|
|
133 <FONT color="green">130</FONT> }<a name="line.130"></a>
|
|
|
134 <FONT color="green">131</FONT> <a name="line.131"></a>
|
|
|
135 <FONT color="green">132</FONT> /**<a name="line.132"></a>
|
|
|
136 <FONT color="green">133</FONT> * Returns the next pseudorandom, uniformly distributed <code>int</code><a name="line.133"></a>
|
|
|
137 <FONT color="green">134</FONT> * value from this random number generator's sequence.<a name="line.134"></a>
|
|
|
138 <FONT color="green">135</FONT> * All 2<font size="-1"><sup>32</sup></font> possible <tt>int</tt> values<a name="line.135"></a>
|
|
|
139 <FONT color="green">136</FONT> * should be produced with (approximately) equal probability.<a name="line.136"></a>
|
|
|
140 <FONT color="green">137</FONT> *<a name="line.137"></a>
|
|
|
141 <FONT color="green">138</FONT> * @return the next pseudorandom, uniformly distributed <code>int</code><a name="line.138"></a>
|
|
|
142 <FONT color="green">139</FONT> * value from this random number generator's sequence<a name="line.139"></a>
|
|
|
143 <FONT color="green">140</FONT> */<a name="line.140"></a>
|
|
|
144 <FONT color="green">141</FONT> @Override<a name="line.141"></a>
|
|
|
145 <FONT color="green">142</FONT> public int nextInt() {<a name="line.142"></a>
|
|
|
146 <FONT color="green">143</FONT> return randomGenerator.nextInt();<a name="line.143"></a>
|
|
|
147 <FONT color="green">144</FONT> }<a name="line.144"></a>
|
|
|
148 <FONT color="green">145</FONT> <a name="line.145"></a>
|
|
|
149 <FONT color="green">146</FONT> /**<a name="line.146"></a>
|
|
|
150 <FONT color="green">147</FONT> * Returns a pseudorandom, uniformly distributed <tt>int</tt> value<a name="line.147"></a>
|
|
|
151 <FONT color="green">148</FONT> * between 0 (inclusive) and the specified value (exclusive), drawn from<a name="line.148"></a>
|
|
|
152 <FONT color="green">149</FONT> * this random number generator's sequence.<a name="line.149"></a>
|
|
|
153 <FONT color="green">150</FONT> *<a name="line.150"></a>
|
|
|
154 <FONT color="green">151</FONT> * @param n the bound on the random number to be returned. Must be<a name="line.151"></a>
|
|
|
155 <FONT color="green">152</FONT> * positive.<a name="line.152"></a>
|
|
|
156 <FONT color="green">153</FONT> * @return a pseudorandom, uniformly distributed <tt>int</tt><a name="line.153"></a>
|
|
|
157 <FONT color="green">154</FONT> * value between 0 (inclusive) and n (exclusive).<a name="line.154"></a>
|
|
|
158 <FONT color="green">155</FONT> * @throws IllegalArgumentException if n is not positive.<a name="line.155"></a>
|
|
|
159 <FONT color="green">156</FONT> */<a name="line.156"></a>
|
|
|
160 <FONT color="green">157</FONT> @Override<a name="line.157"></a>
|
|
|
161 <FONT color="green">158</FONT> public int nextInt(int n) {<a name="line.158"></a>
|
|
|
162 <FONT color="green">159</FONT> return randomGenerator.nextInt(n);<a name="line.159"></a>
|
|
|
163 <FONT color="green">160</FONT> }<a name="line.160"></a>
|
|
|
164 <FONT color="green">161</FONT> <a name="line.161"></a>
|
|
|
165 <FONT color="green">162</FONT> /**<a name="line.162"></a>
|
|
|
166 <FONT color="green">163</FONT> * Returns the next pseudorandom, uniformly distributed <code>long</code><a name="line.163"></a>
|
|
|
167 <FONT color="green">164</FONT> * value from this random number generator's sequence. All<a name="line.164"></a>
|
|
|
168 <FONT color="green">165</FONT> * 2<font size="-1"><sup>64</sup></font> possible <tt>long</tt> values<a name="line.165"></a>
|
|
|
169 <FONT color="green">166</FONT> * should be produced with (approximately) equal probability.<a name="line.166"></a>
|
|
|
170 <FONT color="green">167</FONT> *<a name="line.167"></a>
|
|
|
171 <FONT color="green">168</FONT> * @return the next pseudorandom, uniformly distributed <code>long</code><a name="line.168"></a>
|
|
|
172 <FONT color="green">169</FONT> *value from this random number generator's sequence<a name="line.169"></a>
|
|
|
173 <FONT color="green">170</FONT> */<a name="line.170"></a>
|
|
|
174 <FONT color="green">171</FONT> @Override<a name="line.171"></a>
|
|
|
175 <FONT color="green">172</FONT> public long nextLong() {<a name="line.172"></a>
|
|
|
176 <FONT color="green">173</FONT> return randomGenerator.nextLong();<a name="line.173"></a>
|
|
|
177 <FONT color="green">174</FONT> }<a name="line.174"></a>
|
|
|
178 <FONT color="green">175</FONT> <a name="line.175"></a>
|
|
|
179 <FONT color="green">176</FONT> /** {@inheritDoc} */<a name="line.176"></a>
|
|
|
180 <FONT color="green">177</FONT> public void setSeed(int seed) {<a name="line.177"></a>
|
|
|
181 <FONT color="green">178</FONT> if (randomGenerator != null) { // required to avoid NPE in constructor<a name="line.178"></a>
|
|
|
182 <FONT color="green">179</FONT> randomGenerator.setSeed(seed);<a name="line.179"></a>
|
|
|
183 <FONT color="green">180</FONT> }<a name="line.180"></a>
|
|
|
184 <FONT color="green">181</FONT> }<a name="line.181"></a>
|
|
|
185 <FONT color="green">182</FONT> <a name="line.182"></a>
|
|
|
186 <FONT color="green">183</FONT> /** {@inheritDoc} */<a name="line.183"></a>
|
|
|
187 <FONT color="green">184</FONT> public void setSeed(int[] seed) {<a name="line.184"></a>
|
|
|
188 <FONT color="green">185</FONT> if (randomGenerator != null) { // required to avoid NPE in constructor<a name="line.185"></a>
|
|
|
189 <FONT color="green">186</FONT> randomGenerator.setSeed(seed);<a name="line.186"></a>
|
|
|
190 <FONT color="green">187</FONT> }<a name="line.187"></a>
|
|
|
191 <FONT color="green">188</FONT> }<a name="line.188"></a>
|
|
|
192 <FONT color="green">189</FONT> <a name="line.189"></a>
|
|
|
193 <FONT color="green">190</FONT> /** {@inheritDoc} */<a name="line.190"></a>
|
|
|
194 <FONT color="green">191</FONT> @Override<a name="line.191"></a>
|
|
|
195 <FONT color="green">192</FONT> public void setSeed(long seed) {<a name="line.192"></a>
|
|
|
196 <FONT color="green">193</FONT> if (randomGenerator != null) { // required to avoid NPE in constructor<a name="line.193"></a>
|
|
|
197 <FONT color="green">194</FONT> randomGenerator.setSeed(seed);<a name="line.194"></a>
|
|
|
198 <FONT color="green">195</FONT> }<a name="line.195"></a>
|
|
|
199 <FONT color="green">196</FONT> }<a name="line.196"></a>
|
|
|
200 <FONT color="green">197</FONT> <a name="line.197"></a>
|
|
|
201 <FONT color="green">198</FONT> }<a name="line.198"></a>
|
|
|
202
|
|
|
203
|
|
|
204
|
|
|
205
|
|
|
206
|
|
|
207
|
|
|
208
|
|
|
209
|
|
|
210
|
|
|
211
|
|
|
212
|
|
|
213
|
|
|
214
|
|
|
215
|
|
|
216
|
|
|
217
|
|
|
218
|
|
|
219
|
|
|
220
|
|
|
221
|
|
|
222
|
|
|
223
|
|
|
224
|
|
|
225
|
|
|
226
|
|
|
227
|
|
|
228
|
|
|
229
|
|
|
230
|
|
|
231
|
|
|
232
|
|
|
233
|
|
|
234
|
|
|
235
|
|
|
236
|
|
|
237
|
|
|
238
|
|
|
239
|
|
|
240
|
|
|
241
|
|
|
242
|
|
|
243
|
|
|
244
|
|
|
245
|
|
|
246
|
|
|
247
|
|
|
248
|
|
|
249
|
|
|
250
|
|
|
251
|
|
|
252
|
|
|
253
|
|
|
254
|
|
|
255
|
|
|
256
|
|
|
257
|
|
|
258
|
|
|
259
|
|
|
260
|
|
|
261
|
|
|
262 </PRE>
|
|
|
263 </BODY>
|
|
|
264 </HTML>
|
