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| <div class="subTitle">org.apache.commons.math3.random</div> |
| <h2 title="Class AbstractWell" class="title">Class AbstractWell</h2> |
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| <li><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html" title="class in org.apache.commons.math3.random">org.apache.commons.math3.random.BitsStreamGenerator</a></li> |
| <li> |
| <ul class="inheritance"> |
| <li>org.apache.commons.math3.random.AbstractWell</li> |
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| <dd><a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a>, <a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a></dd> |
| </dl> |
| <dl> |
| <dt>Direct Known Subclasses:</dt> |
| <dd><a href="../../../../../org/apache/commons/math3/random/Well1024a.html" title="class in org.apache.commons.math3.random">Well1024a</a>, <a href="../../../../../org/apache/commons/math3/random/Well19937a.html" title="class in org.apache.commons.math3.random">Well19937a</a>, <a href="../../../../../org/apache/commons/math3/random/Well19937c.html" title="class in org.apache.commons.math3.random">Well19937c</a>, <a href="../../../../../org/apache/commons/math3/random/Well44497a.html" title="class in org.apache.commons.math3.random">Well44497a</a>, <a href="../../../../../org/apache/commons/math3/random/Well44497b.html" title="class in org.apache.commons.math3.random">Well44497b</a>, <a href="../../../../../org/apache/commons/math3/random/Well512a.html" title="class in org.apache.commons.math3.random">Well512a</a></dd> |
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| <br> |
| <pre>public abstract class <span class="strong">AbstractWell</span> |
| extends <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html" title="class in org.apache.commons.math3.random">BitsStreamGenerator</a> |
| implements <a href="http://docs.oracle.com/javase/6/docs/api/java/io/Serializable.html?is-external=true" title="class or interface in java.io">Serializable</a></pre> |
| <div class="block">This abstract class implements the WELL class of pseudo-random number generator |
| from François Panneton, Pierre L'Ecuyer and Makoto Matsumoto. |
| |
| <p>This generator is described in a paper by François Panneton, |
| Pierre L'Ecuyer and Makoto Matsumoto <a |
| href="http://www.iro.umontreal.ca/~lecuyer/myftp/papers/wellrng.pdf">Improved |
| Long-Period Generators Based on Linear Recurrences Modulo 2</a> ACM |
| Transactions on Mathematical Software, 32, 1 (2006). The errata for the paper |
| are in <a href="http://www.iro.umontreal.ca/~lecuyer/myftp/papers/wellrng-errata.txt">wellrng-errata.txt</a>.</p></div> |
| <dl><dt><span class="strong">Since:</span></dt> |
| <dd>2.2</dd> |
| <dt><span class="strong">Version:</span></dt> |
| <dd>$Id: AbstractWell.java 1547633 2013-12-03 23:03:06Z tn $</dd> |
| <dt><span class="strong">See Also:</span></dt><dd><a href="http://www.iro.umontreal.ca/~panneton/WELLRNG.html">WELL Random number generator</a>, |
| <a href="../../../../../serialized-form.html#org.apache.commons.math3.random.AbstractWell">Serialized Form</a></dd></dl> |
| </li> |
| </ul> |
| </div> |
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| <!-- =========== FIELD SUMMARY =========== --> |
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| <caption><span>Fields</span><span class="tabEnd"> </span></caption> |
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| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Field and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#i1">i1</a></strong></code> |
| <div class="block">Index indirection table giving for each index the value index + m1 taking table size into account.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#i2">i2</a></strong></code> |
| <div class="block">Index indirection table giving for each index the value index + m2 taking table size into account.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#i3">i3</a></strong></code> |
| <div class="block">Index indirection table giving for each index the value index + m3 taking table size into account.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#index">index</a></strong></code> |
| <div class="block">Current index in the bytes pool.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#iRm1">iRm1</a></strong></code> |
| <div class="block">Index indirection table giving for each index its predecessor taking table size into account.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#iRm2">iRm2</a></strong></code> |
| <div class="block">Index indirection table giving for each index its second predecessor taking table size into account.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected int[]</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#v">v</a></strong></code> |
| <div class="block">Bytes pool.</div> |
| </td> |
| </tr> |
| </table> |
| </li> |
| </ul> |
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| <h3>Constructor Summary</h3> |
| <table class="overviewSummary" border="0" cellpadding="3" cellspacing="0" summary="Constructor Summary table, listing constructors, and an explanation"> |
| <caption><span>Constructors</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier</th> |
| <th class="colLast" scope="col">Constructor and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#AbstractWell(int, int, int, int)">AbstractWell</a></strong>(int k, |
| int m1, |
| int m2, |
| int m3)</code> |
| <div class="block">Creates a new random number generator.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#AbstractWell(int, int, int, int, int)">AbstractWell</a></strong>(int k, |
| int m1, |
| int m2, |
| int m3, |
| int seed)</code> |
| <div class="block">Creates a new random number generator using a single int seed.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#AbstractWell(int, int, int, int, int[])">AbstractWell</a></strong>(int k, |
| int m1, |
| int m2, |
| int m3, |
| int[] seed)</code> |
| <div class="block">Creates a new random number generator using an int array seed.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>protected </code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#AbstractWell(int, int, int, int, long)">AbstractWell</a></strong>(int k, |
| int m1, |
| int m2, |
| int m3, |
| long seed)</code> |
| <div class="block">Creates a new random number generator using a single long seed.</div> |
| </td> |
| </tr> |
| </table> |
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| <h3>Method Summary</h3> |
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| <caption><span>Methods</span><span class="tabEnd"> </span></caption> |
| <tr> |
| <th class="colFirst" scope="col">Modifier and Type</th> |
| <th class="colLast" scope="col">Method and Description</th> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>protected abstract int</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#next(int)">next</a></strong>(int bits)</code> |
| <div class="block">Generate next pseudorandom number.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#setSeed(int)">setSeed</a></strong>(int seed)</code> |
| <div class="block">Reinitialize the generator as if just built with the given int seed.</div> |
| </td> |
| </tr> |
| <tr class="altColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#setSeed(int[])">setSeed</a></strong>(int[] seed)</code> |
| <div class="block">Reinitialize the generator as if just built with the given int array seed.</div> |
| </td> |
| </tr> |
| <tr class="rowColor"> |
| <td class="colFirst"><code>void</code></td> |
| <td class="colLast"><code><strong><a href="../../../../../org/apache/commons/math3/random/AbstractWell.html#setSeed(long)">setSeed</a></strong>(long seed)</code> |
| <div class="block">Reinitialize the generator as if just built with the given long seed.</div> |
| </td> |
| </tr> |
| </table> |
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| <li class="blockList"><a name="methods_inherited_from_class_org.apache.commons.math3.random.BitsStreamGenerator"> |
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| </a> |
| <h3>Methods inherited from class org.apache.commons.math3.random.<a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html" title="class in org.apache.commons.math3.random">BitsStreamGenerator</a></h3> |
| <code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#clear()">clear</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextBoolean()">nextBoolean</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextBytes(byte[])">nextBytes</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextDouble()">nextDouble</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextFloat()">nextFloat</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextGaussian()">nextGaussian</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextInt()">nextInt</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextInt(int)">nextInt</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextLong()">nextLong</a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextLong(long)">nextLong</a></code></li> |
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| <h3>Methods inherited from class java.lang.<a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true" title="class or interface in java.lang">Object</a></h3> |
| <code><a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#clone()" title="class or interface in java.lang">clone</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#equals(java.lang.Object)" title="class or interface in java.lang">equals</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#finalize()" title="class or interface in java.lang">finalize</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#getClass()" title="class or interface in java.lang">getClass</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#hashCode()" title="class or interface in java.lang">hashCode</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notify()" title="class or interface in java.lang">notify</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#notifyAll()" title="class or interface in java.lang">notifyAll</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#toString()" title="class or interface in java.lang">toString</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait()" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long)" title="class or interface in java.lang">wait</a>, <a href="http://docs.oracle.com/javase/6/docs/api/java/lang/Object.html?is-external=true#wait(long, int)" title="class or interface in java.lang">wait</a></code></li> |
| </ul> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| </div> |
| <div class="details"> |
| <ul class="blockList"> |
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| <!-- ============ FIELD DETAIL =========== --> |
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| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>index</h4> |
| <pre>protected int index</pre> |
| <div class="block">Current index in the bytes pool.</div> |
| </li> |
| </ul> |
| <a name="v"> |
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| <h4>v</h4> |
| <pre>protected final int[] v</pre> |
| <div class="block">Bytes pool.</div> |
| </li> |
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| <a name="iRm1"> |
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| </a> |
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| <h4>iRm1</h4> |
| <pre>protected final int[] iRm1</pre> |
| <div class="block">Index indirection table giving for each index its predecessor taking table size into account.</div> |
| </li> |
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| <pre>protected final int[] iRm2</pre> |
| <div class="block">Index indirection table giving for each index its second predecessor taking table size into account.</div> |
| </li> |
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| <h4>i1</h4> |
| <pre>protected final int[] i1</pre> |
| <div class="block">Index indirection table giving for each index the value index + m1 taking table size into account.</div> |
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| <pre>protected final int[] i2</pre> |
| <div class="block">Index indirection table giving for each index the value index + m2 taking table size into account.</div> |
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| <h4>i3</h4> |
| <pre>protected final int[] i3</pre> |
| <div class="block">Index indirection table giving for each index the value index + m3 taking table size into account.</div> |
| </li> |
| </ul> |
| </li> |
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| <a name="AbstractWell(int, int, int, int)"> |
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| <h4>AbstractWell</h4> |
| <pre>protected AbstractWell(int k, |
| int m1, |
| int m2, |
| int m3)</pre> |
| <div class="block">Creates a new random number generator. |
| <p>The instance is initialized using the current time plus the |
| system identity hash code of this instance as the seed.</p></div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>k</code> - number of bits in the pool (not necessarily a multiple of 32)</dd><dd><code>m1</code> - first parameter of the algorithm</dd><dd><code>m2</code> - second parameter of the algorithm</dd><dd><code>m3</code> - third parameter of the algorithm</dd></dl> |
| </li> |
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| <h4>AbstractWell</h4> |
| <pre>protected AbstractWell(int k, |
| int m1, |
| int m2, |
| int m3, |
| int seed)</pre> |
| <div class="block">Creates a new random number generator using a single int seed.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>k</code> - number of bits in the pool (not necessarily a multiple of 32)</dd><dd><code>m1</code> - first parameter of the algorithm</dd><dd><code>m2</code> - second parameter of the algorithm</dd><dd><code>m3</code> - third parameter of the algorithm</dd><dd><code>seed</code> - the initial seed (32 bits integer)</dd></dl> |
| </li> |
| </ul> |
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| <h4>AbstractWell</h4> |
| <pre>protected AbstractWell(int k, |
| int m1, |
| int m2, |
| int m3, |
| int[] seed)</pre> |
| <div class="block">Creates a new random number generator using an int array seed.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>k</code> - number of bits in the pool (not necessarily a multiple of 32)</dd><dd><code>m1</code> - first parameter of the algorithm</dd><dd><code>m2</code> - second parameter of the algorithm</dd><dd><code>m3</code> - third parameter of the algorithm</dd><dd><code>seed</code> - the initial seed (32 bits integers array), if null |
| the seed of the generator will be related to the current time</dd></dl> |
| </li> |
| </ul> |
| <a name="AbstractWell(int, int, int, int, long)"> |
| <!-- --> |
| </a> |
| <ul class="blockListLast"> |
| <li class="blockList"> |
| <h4>AbstractWell</h4> |
| <pre>protected AbstractWell(int k, |
| int m1, |
| int m2, |
| int m3, |
| long seed)</pre> |
| <div class="block">Creates a new random number generator using a single long seed.</div> |
| <dl><dt><span class="strong">Parameters:</span></dt><dd><code>k</code> - number of bits in the pool (not necessarily a multiple of 32)</dd><dd><code>m1</code> - first parameter of the algorithm</dd><dd><code>m2</code> - second parameter of the algorithm</dd><dd><code>m3</code> - third parameter of the algorithm</dd><dd><code>seed</code> - the initial seed (64 bits integer)</dd></dl> |
| </li> |
| </ul> |
| </li> |
| </ul> |
| <!-- ============ METHOD DETAIL ========== --> |
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| <a name="setSeed(int)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setSeed</h4> |
| <pre>public void setSeed(int seed)</pre> |
| <div class="block">Reinitialize the generator as if just built with the given int seed. |
| <p>The state of the generator is exactly the same as a new |
| generator built with the same seed.</p></div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html#setSeed(int)">setSeed</a></code> in interface <code><a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a></code></dd> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#setSeed(int)">setSeed</a></code> in class <code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html" title="class in org.apache.commons.math3.random">BitsStreamGenerator</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>seed</code> - the initial seed (32 bits integer)</dd></dl> |
| </li> |
| </ul> |
| <a name="setSeed(int[])"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setSeed</h4> |
| <pre>public void setSeed(int[] seed)</pre> |
| <div class="block">Reinitialize the generator as if just built with the given int array seed. |
| <p>The state of the generator is exactly the same as a new |
| generator built with the same seed.</p></div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html#setSeed(int[])">setSeed</a></code> in interface <code><a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a></code></dd> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#setSeed(int[])">setSeed</a></code> in class <code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html" title="class in org.apache.commons.math3.random">BitsStreamGenerator</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>seed</code> - the initial seed (32 bits integers array). If null |
| the seed of the generator will be the system time plus the system identity |
| hash code of the instance.</dd></dl> |
| </li> |
| </ul> |
| <a name="setSeed(long)"> |
| <!-- --> |
| </a> |
| <ul class="blockList"> |
| <li class="blockList"> |
| <h4>setSeed</h4> |
| <pre>public void setSeed(long seed)</pre> |
| <div class="block">Reinitialize the generator as if just built with the given long seed. |
| <p>The state of the generator is exactly the same as a new |
| generator built with the same seed.</p></div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html#setSeed(long)">setSeed</a></code> in interface <code><a href="../../../../../org/apache/commons/math3/random/RandomGenerator.html" title="interface in org.apache.commons.math3.random">RandomGenerator</a></code></dd> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#setSeed(long)">setSeed</a></code> in class <code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html" title="class in org.apache.commons.math3.random">BitsStreamGenerator</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>seed</code> - the initial seed (64 bits integer)</dd></dl> |
| </li> |
| </ul> |
| <a name="next(int)"> |
| <!-- --> |
| </a> |
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| <h4>next</h4> |
| <pre>protected abstract int next(int bits)</pre> |
| <div class="block">Generate next pseudorandom number. |
| <p>This method is the core generation algorithm. It is used by all the |
| public generation methods for the various primitive types <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextBoolean()"><code>BitsStreamGenerator.nextBoolean()</code></a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextBytes(byte[])"><code>BitsStreamGenerator.nextBytes(byte[])</code></a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextDouble()"><code>BitsStreamGenerator.nextDouble()</code></a>, |
| <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextFloat()"><code>BitsStreamGenerator.nextFloat()</code></a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextGaussian()"><code>BitsStreamGenerator.nextGaussian()</code></a>, <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextInt()"><code>BitsStreamGenerator.nextInt()</code></a>, |
| <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#next(int)"><code>BitsStreamGenerator.next(int)</code></a> and <a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#nextLong()"><code>BitsStreamGenerator.nextLong()</code></a>.</p></div> |
| <dl> |
| <dt><strong>Specified by:</strong></dt> |
| <dd><code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html#next(int)">next</a></code> in class <code><a href="../../../../../org/apache/commons/math3/random/BitsStreamGenerator.html" title="class in org.apache.commons.math3.random">BitsStreamGenerator</a></code></dd> |
| <dt><span class="strong">Parameters:</span></dt><dd><code>bits</code> - number of random bits to produce</dd> |
| <dt><span class="strong">Returns:</span></dt><dd>random bits generated</dd></dl> |
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