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<a name="boost.random.linear_feedback_shift"></a><div class="titlepage"></div>
<div class="refnamediv">
<h2><span class="refentrytitle">Class template linear_feedback_shift</span></h2>
<p>boost::random::linear_feedback_shift</p>
</div>
<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../boost_random/reference.html#header.boost.random.linear_feedback_shift_hpp" title="Header &lt;boost/random/linear_feedback_shift.hpp&gt;">boost/random/linear_feedback_shift.hpp</a>&gt;
</span><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> UIntType<span class="special">,</span> <span class="keyword">int</span> w<span class="special">,</span> <span class="keyword">int</span> k<span class="special">,</span> <span class="keyword">int</span> q<span class="special">,</span> <span class="keyword">int</span> s<span class="special">,</span> <span class="identifier">UIntType</span> val<span class="special">&gt;</span>
<span class="keyword">class</span> <a class="link" href="linear_feedback_shift.html" title="Class template linear_feedback_shift">linear_feedback_shift</a> <span class="special">{</span>
<span class="keyword">public</span><span class="special">:</span>
<span class="comment">// types</span>
<span class="keyword">typedef</span> <span class="identifier">UIntType</span> <a name="boost.random.linear_feedback_shift.result_type"></a><span class="identifier">result_type</span><span class="special">;</span>
<span class="comment">// <a class="link" href="linear_feedback_shift.html#boost.random.linear_feedback_shiftconstruct-copy-destruct">construct/copy/destruct</a></span>
<a class="link" href="linear_feedback_shift.html#id1146358-bb"><span class="identifier">linear_feedback_shift</span></a><span class="special">(</span><span class="identifier">UIntType</span> <span class="special">=</span> <span class="number">341</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> It<span class="special">&gt;</span> <a class="link" href="linear_feedback_shift.html#id1146367-bb"><span class="identifier">linear_feedback_shift</span></a><span class="special">(</span><span class="identifier">It</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="linear_feedback_shift.html#id1146289-bb">public member functions</a></span>
<span class="identifier">result_type</span> <a class="link" href="linear_feedback_shift.html#id1146293-bb"><span class="identifier">min</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="identifier">result_type</span> <a class="link" href="linear_feedback_shift.html#id1146301-bb"><span class="identifier">max</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
<span class="keyword">void</span> <a class="link" href="linear_feedback_shift.html#id1146308-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">UIntType</span> <span class="special">=</span> <span class="number">341</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> It<span class="special">&gt;</span> <span class="keyword">void</span> <a class="link" href="linear_feedback_shift.html#id1146324-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">It</span> <span class="special">&amp;</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span>
<span class="identifier">result_type</span> <a class="link" href="linear_feedback_shift.html#id1146350-bb"><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span>
<span class="comment">// <a class="link" href="linear_feedback_shift.html#id1146386-bb">public static functions</a></span>
<span class="keyword">static</span> <span class="keyword">bool</span> <a class="link" href="linear_feedback_shift.html#id1146389-bb"><span class="identifier">validation</span></a><span class="special">(</span><span class="identifier">result_type</span><span class="special">)</span><span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> has_fixed_range<span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">int</span> word_size<span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">int</span> exponent1<span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">int</span> exponent2<span class="special">;</span>
<span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">int</span> step_size<span class="special">;</span>
<span class="special">}</span><span class="special">;</span></pre></div>
<div class="refsect1">
<a name="id2496034"></a><h2>Description</h2>
<p>Instatiation of <code class="computeroutput">linear_feedback_shift</code> model a <a class="link" href="../../boost_random/reference.html#boost_random.reference.concepts.pseudo_random_number_generator" title="Pseudo-Random Number Generator">pseudo-random number generator</a> . It was originally proposed in</p>
<p> </p>
<div class="blockquote"><blockquote class="blockquote"><p> "Random numbers generated by linear recurrence modulo two.", Tausworthe, R. C.(1965), Mathematics of Computation 19, 201-209. </p></blockquote></div>
<p> </p>
<div class="refsect2">
<a name="id2496065"></a><h3>
<a name="boost.random.linear_feedback_shiftconstruct-copy-destruct"></a><code class="computeroutput">linear_feedback_shift</code>
public
construct/copy/destruct</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem"><pre class="literallayout"><a name="id1146358-bb"></a><span class="identifier">linear_feedback_shift</span><span class="special">(</span><span class="identifier">UIntType</span> s0 <span class="special">=</span> <span class="number">341</span><span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> It<span class="special">&gt;</span> <a name="id1146367-bb"></a><span class="identifier">linear_feedback_shift</span><span class="special">(</span><span class="identifier">It</span> <span class="special">&amp;</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span></pre></li>
</ol></div>
</div>
<div class="refsect2">
<a name="id2496201"></a><h3>
<a name="id1146289-bb"></a><code class="computeroutput">linear_feedback_shift</code> public member functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1">
<li class="listitem"><pre class="literallayout"><span class="identifier">result_type</span> <a name="id1146293-bb"></a><span class="identifier">min</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="identifier">result_type</span> <a name="id1146301-bb"></a><span class="identifier">max</span><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">void</span> <a name="id1146308-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">UIntType</span> s0 <span class="special">=</span> <span class="number">341</span><span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="keyword">template</span><span class="special">&lt;</span><span class="keyword">typename</span> It<span class="special">&gt;</span> <span class="keyword">void</span> <a name="id1146324-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">It</span> <span class="special">&amp;</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span></pre></li>
<li class="listitem"><pre class="literallayout"><span class="identifier">result_type</span> <a name="id1146350-bb"></a><span class="keyword">operator</span><span class="special">(</span><span class="special">)</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre></li>
</ol></div>
</div>
<div class="refsect2">
<a name="id2496471"></a><h3>
<a name="id1146386-bb"></a><code class="computeroutput">linear_feedback_shift</code> public static functions</h3>
<div class="orderedlist"><ol class="orderedlist" type="1"><li class="listitem"><pre class="literallayout"><span class="keyword">static</span> <span class="keyword">bool</span> <a name="id1146389-bb"></a><span class="identifier">validation</span><span class="special">(</span><span class="identifier">result_type</span> x<span class="special">)</span><span class="special">;</span></pre></li></ol></div>
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<td align="right"><div class="copyright-footer">Copyright &#169; 2000 -2005 Jens Maurer, 2009 Steven Watanabe<p>
Distributed under the Boost Software License, Version 1.0. (See accompanying
file LICENSE_1_0.txt or copy at <a href="http://www.boost.org/LICENSE_1_0.txt" target="_top">http://www.boost.org/LICENSE_1_0.txt</a>)
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