1<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 2<html> 3<head> 4<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 5<title>Class template lagged_fibonacci_engine</title> 6<link rel="stylesheet" href="../../../../doc/src/boostbook.css" type="text/css"> 7<meta name="generator" content="DocBook XSL Stylesheets V1.79.1"> 8<link rel="home" href="../../index.html" title="The Boost C++ Libraries BoostBook Documentation Subset"> 9<link rel="up" href="../../boost_random/reference.html#header.boost.random.lagged_fibonacci_hpp" title="Header <boost/random/lagged_fibonacci.hpp>"> 10<link rel="prev" href="lagged_fibonacci_01_engine.html" title="Class template lagged_fibonacci_01_engine"> 11<link rel="next" href="lagged_fibonacci607.html" title="Type definition lagged_fibonacci607"> 12</head> 13<body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"> 14<table cellpadding="2" width="100%"><tr> 15<td 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src="../../../../doc/src/images/next.png" alt="Next"></a> 25</div> 26<div class="refentry"> 27<a name="boost.random.lagged_fibonacci_engine"></a><div class="titlepage"></div> 28<div class="refnamediv"> 29<h2><span class="refentrytitle">Class template lagged_fibonacci_engine</span></h2> 30<p>boost::random::lagged_fibonacci_engine</p> 31</div> 32<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2> 33<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: <<a class="link" href="../../boost_random/reference.html#header.boost.random.lagged_fibonacci_hpp" title="Header <boost/random/lagged_fibonacci.hpp>">boost/random/lagged_fibonacci.hpp</a>> 34 35</span><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> UIntType<span class="special">,</span> <span class="keyword">int</span> w<span class="special">,</span> <span class="keyword">unsigned</span> <span class="keyword">int</span> p<span class="special">,</span> <span class="keyword">unsigned</span> <span class="keyword">int</span> q<span class="special">></span> 36<span class="keyword">class</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">{</span> 37<span class="keyword">public</span><span class="special">:</span> 38 <span class="comment">// types</span> 39 <span class="keyword">typedef</span> <span class="identifier">UIntType</span> <a name="boost.random.lagged_fibonacci_engine.result_type"></a><span class="identifier">result_type</span><span class="special">;</span> 40 41 <span class="comment">// <a class="link" href="lagged_fibonacci_engine.html#boost.random.lagged_fibonacci_engineconstruct-copy-destruct">construct/copy/destruct</a></span> 42 <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_11-bb"><span class="identifier">lagged_fibonacci_engine</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 43 <span class="keyword">explicit</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_12-bb"><span class="identifier">lagged_fibonacci_engine</span></a><span class="special">(</span><span class="identifier">UIntType</span><span class="special">)</span><span class="special">;</span> 44 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> <span class="keyword">explicit</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_13-bb"><span class="identifier">lagged_fibonacci_engine</span></a><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 45 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_14-bb"><span class="identifier">lagged_fibonacci_engine</span></a><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span> 46 47 <span class="comment">// <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_9-bb">public static functions</a></span> 48 <span class="keyword">static</span> <span class="identifier">result_type</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_9_1-bb"><span class="identifier">min</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 49 <span class="keyword">static</span> <span class="identifier">result_type</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_9_2-bb"><span class="identifier">max</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 50 51 <span class="comment">// <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10-bb">public member functions</a></span> 52 <span class="keyword">void</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10_1-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="special">)</span><span class="special">;</span> 53 <span class="keyword">void</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10_2-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">UIntType</span><span class="special">)</span><span class="special">;</span> 54 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> <span class="keyword">void</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10_3-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 55 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="keyword">void</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10_4-bb"><span class="identifier">seed</span></a><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span><span class="special">,</span> <span class="identifier">It</span><span class="special">)</span><span class="special">;</span> 56 <span class="identifier">result_type</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10_5-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> 57 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Iter<span class="special">></span> <span class="keyword">void</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10_6-bb"><span class="identifier">generate</span></a><span class="special">(</span><span class="identifier">Iter</span><span class="special">,</span> <span class="identifier">Iter</span><span class="special">)</span><span class="special">;</span> 58 <span class="keyword">void</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_10_7-bb"><span class="identifier">discard</span></a><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uintmax_t</span><span class="special">)</span><span class="special">;</span> 59 60 <span class="comment">// <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_15-bb">friend functions</a></span> 61 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> 62 <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> 63 <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_15_1-bb"><span class="keyword">operator</span><span class="special"><<</span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span><span class="special">,</span> 64 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 65 <span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> 66 <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> 67 <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_15_2-bb"><span class="keyword">operator</span><span class="special">>></span></a><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span><span class="special">,</span> 68 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 69 <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_15_3-bb"><span class="keyword">operator</span><span class="special">==</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span><span class="special">,</span> 70 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 71 <span class="keyword">friend</span> <span class="keyword">bool</span> <a class="link" href="lagged_fibonacci_engine.html#id-1_3_34_5_6_21_1_1_2_15_4-bb"><span class="keyword">operator</span><span class="special">!=</span></a><span class="special">(</span><span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span><span class="special">,</span> 72 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span><span class="special">)</span><span class="special">;</span> 73 74 <span class="comment">// public data members</span> 75 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">bool</span> <span class="identifier">has_fixed_range</span><span class="special">;</span> 76 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">int</span> <span class="identifier">word_size</span><span class="special">;</span> 77 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">unsigned</span> <span class="keyword">int</span> <span class="identifier">long_lag</span><span class="special">;</span> 78 <span class="keyword">static</span> <span class="keyword">const</span> <span class="keyword">unsigned</span> <span class="keyword">int</span> <span class="identifier">short_lag</span><span class="special">;</span> 79 <span class="keyword">static</span> <span class="keyword">const</span> <span class="identifier">UIntType</span> <span class="identifier">default_seed</span><span class="special">;</span> 80<span class="special">}</span><span class="special">;</span></pre></div> 81<div class="refsect1"> 82<a name="id-1.3.34.5.6.20.4.4"></a><h2>Description</h2> 83<p>Instantiations of class template <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> 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 uses a lagged Fibonacci algorithm with two lags <code class="computeroutput">p</code> and <code class="computeroutput">q:</code> x(i) = x(i-p) + x(i-q) (mod 2<sup>w</sup>) with p > q. </p> 84<div class="refsect2"> 85<a name="id-1.3.34.5.6.20.4.4.3"></a><h3> 86<a name="boost.random.lagged_fibonacci_engineconstruct-copy-destruct"></a><code class="computeroutput">lagged_fibonacci_engine</code> 87 public 88 construct/copy/destruct</h3> 89<div class="orderedlist"><ol class="orderedlist" type="1"> 90<li class="listitem"> 91<pre class="literallayout"><a name="id-1_3_34_5_6_21_1_1_2_11-bb"></a><span class="identifier">lagged_fibonacci_engine</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> 92<p>Creates a new <code class="computeroutput"><code class="computeroutput"><a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a></code></code> and calls <code class="computeroutput">seed()</code>. </p> 93</li> 94<li class="listitem"> 95<pre class="literallayout"><span class="keyword">explicit</span> <a name="id-1_3_34_5_6_21_1_1_2_12-bb"></a><span class="identifier">lagged_fibonacci_engine</span><span class="special">(</span><span class="identifier">UIntType</span> value<span class="special">)</span><span class="special">;</span></pre> 96<p>Creates a new <code class="computeroutput"><code class="computeroutput"><a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a></code></code> and calls <code class="computeroutput">seed(value)</code>. </p> 97</li> 98<li class="listitem"> 99<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> <span class="keyword">explicit</span> <a name="id-1_3_34_5_6_21_1_1_2_13-bb"></a><span class="identifier">lagged_fibonacci_engine</span><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span> seq<span class="special">)</span><span class="special">;</span></pre> 100<p>Creates a new <code class="computeroutput"><code class="computeroutput"><a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a></code></code> and calls <code class="computeroutput">seed(seq)</code>. </p> 101</li> 102<li class="listitem"> 103<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <a name="id-1_3_34_5_6_21_1_1_2_14-bb"></a><span class="identifier">lagged_fibonacci_engine</span><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span></pre> 104<p>Creates a new <code class="computeroutput"><code class="computeroutput"><a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a></code></code> and calls <code class="computeroutput">seed(first, last)</code>. </p> 105</li> 106</ol></div> 107</div> 108<div class="refsect2"> 109<a name="id-1.3.34.5.6.20.4.4.4"></a><h3> 110<a name="id-1_3_34_5_6_21_1_1_2_9-bb"></a><code class="computeroutput">lagged_fibonacci_engine</code> public static functions</h3> 111<div class="orderedlist"><ol class="orderedlist" type="1"> 112<li class="listitem"> 113<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">result_type</span> <a name="id-1_3_34_5_6_21_1_1_2_9_1-bb"></a><span class="identifier">min</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> 114<p>Returns the smallest value that the generator can produce. </p> 115</li> 116<li class="listitem"> 117<pre class="literallayout"><span class="keyword">static</span> <span class="identifier">result_type</span> <a name="id-1_3_34_5_6_21_1_1_2_9_2-bb"></a><span class="identifier">max</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> 118<p>Returns the largest value that the generator can produce. </p> 119</li> 120</ol></div> 121</div> 122<div class="refsect2"> 123<a name="id-1.3.34.5.6.20.4.4.5"></a><h3> 124<a name="id-1_3_34_5_6_21_1_1_2_10-bb"></a><code class="computeroutput">lagged_fibonacci_engine</code> public member functions</h3> 125<div class="orderedlist"><ol class="orderedlist" type="1"> 126<li class="listitem"> 127<pre class="literallayout"><span class="keyword">void</span> <a name="id-1_3_34_5_6_21_1_1_2_10_1-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="special">)</span><span class="special">;</span></pre> 128<p>Calls <code class="computeroutput">seed(default_seed)</code>. </p> 129</li> 130<li class="listitem"> 131<pre class="literallayout"><span class="keyword">void</span> <a name="id-1_3_34_5_6_21_1_1_2_10_2-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">UIntType</span> value<span class="special">)</span><span class="special">;</span></pre> 132<p>Sets the state of the generator to values produced by a <code class="computeroutput"><a class="link" href="minstd_rand0.html" title="Type definition minstd_rand0">minstd_rand0</a></code> generator. </p> 133</li> 134<li class="listitem"> 135<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> SeedSeq<span class="special">></span> <span class="keyword">void</span> <a name="id-1_3_34_5_6_21_1_1_2_10_3-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">SeedSeq</span> <span class="special">&</span> seq<span class="special">)</span><span class="special">;</span></pre> 136<p>Sets the state of the generator using values produced by seq. </p> 137</li> 138<li class="listitem"> 139<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> It<span class="special">></span> <span class="keyword">void</span> <a name="id-1_3_34_5_6_21_1_1_2_10_4-bb"></a><span class="identifier">seed</span><span class="special">(</span><span class="identifier">It</span> <span class="special">&</span> first<span class="special">,</span> <span class="identifier">It</span> last<span class="special">)</span><span class="special">;</span></pre> 140<p>Sets the state of the generator to values from the iterator range [first, last). If there are not enough elements in the range [first, last) throws <code class="computeroutput">std::invalid_argument</code>. </p> 141</li> 142<li class="listitem"> 143<pre class="literallayout"><span class="identifier">result_type</span> <a name="id-1_3_34_5_6_21_1_1_2_10_5-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> 144<p>Returns the next value of the generator. </p> 145</li> 146<li class="listitem"> 147<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> Iter<span class="special">></span> <span class="keyword">void</span> <a name="id-1_3_34_5_6_21_1_1_2_10_6-bb"></a><span class="identifier">generate</span><span class="special">(</span><span class="identifier">Iter</span> first<span class="special">,</span> <span class="identifier">Iter</span> last<span class="special">)</span><span class="special">;</span></pre> 148<p>Fills a range with random values </p> 149</li> 150<li class="listitem"> 151<pre class="literallayout"><span class="keyword">void</span> <a name="id-1_3_34_5_6_21_1_1_2_10_7-bb"></a><span class="identifier">discard</span><span class="special">(</span><span class="identifier">boost</span><span class="special">::</span><span class="identifier">uintmax_t</span> z<span class="special">)</span><span class="special">;</span></pre> 152<p>Advances the state of the generator by <code class="computeroutput">z</code>. </p> 153</li> 154</ol></div> 155</div> 156<div class="refsect2"> 157<a name="id-1.3.34.5.6.20.4.4.6"></a><h3> 158<a name="id-1_3_34_5_6_21_1_1_2_15-bb"></a><code class="computeroutput">lagged_fibonacci_engine</code> friend functions</h3> 159<div class="orderedlist"><ol class="orderedlist" type="1"> 160<li class="listitem"> 161<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> 162 <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> 163 <a name="id-1_3_34_5_6_21_1_1_2_15_1-bb"></a><span class="keyword">operator</span><span class="special"><<</span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_ostream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> os<span class="special">,</span> 164 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span> f<span class="special">)</span><span class="special">;</span></pre> 165<p>Writes the textual representation of the generator to a <code class="computeroutput">std::ostream</code>. </p> 166</li> 167<li class="listitem"> 168<pre class="literallayout"><span class="keyword">template</span><span class="special"><</span><span class="keyword">typename</span> CharT<span class="special">,</span> <span class="keyword">typename</span> Traits<span class="special">></span> 169 <span class="keyword">friend</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> 170 <a name="id-1_3_34_5_6_21_1_1_2_15_2-bb"></a><span class="keyword">operator</span><span class="special">>></span><span class="special">(</span><span class="identifier">std</span><span class="special">::</span><span class="identifier">basic_istream</span><span class="special"><</span> <span class="identifier">CharT</span><span class="special">,</span> <span class="identifier">Traits</span> <span class="special">></span> <span class="special">&</span> is<span class="special">,</span> 171 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span> f<span class="special">)</span><span class="special">;</span></pre> 172<p>Reads the textual representation of the generator from a <code class="computeroutput">std::istream</code>. </p> 173</li> 174<li class="listitem"> 175<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="id-1_3_34_5_6_21_1_1_2_15_3-bb"></a><span class="keyword">operator</span><span class="special">==</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span> x_<span class="special">,</span> 176 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span> y_<span class="special">)</span><span class="special">;</span></pre> 177<p>Returns true if the two generators will produce identical sequences of outputs. </p> 178</li> 179<li class="listitem"> 180<pre class="literallayout"><span class="keyword">friend</span> <span class="keyword">bool</span> <a name="id-1_3_34_5_6_21_1_1_2_15_4-bb"></a><span class="keyword">operator</span><span class="special">!=</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span> lhs<span class="special">,</span> 181 <span class="keyword">const</span> <a class="link" href="lagged_fibonacci_engine.html" title="Class template lagged_fibonacci_engine">lagged_fibonacci_engine</a> <span class="special">&</span> rhs<span class="special">)</span><span class="special">;</span></pre> 182<p>Returns true if the two generators will produce different sequences of outputs. </p> 183</li> 184</ol></div> 185</div> 186</div> 187</div> 188<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width="100%"><tr> 189<td align="left"></td> 190<td align="right"><div class="copyright-footer">Copyright © 2000-2005 Jens Maurer<br>Copyright © 2009, 2010 Steven Watanabe<p> 191 Distributed under the Boost Software License, Version 1.0. (See accompanying 192 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>) 193 </p> 194</div></td> 195</tr></table> 196<hr> 197<div class="spirit-nav"> 198<a accesskey="p" href="lagged_fibonacci_01_engine.html"><img src="../../../../doc/src/images/prev.png" alt="Prev"></a><a accesskey="u" href="../../boost_random/reference.html#header.boost.random.lagged_fibonacci_hpp"><img src="../../../../doc/src/images/up.png" alt="Up"></a><a accesskey="h" href="../../index.html"><img src="../../../../doc/src/images/home.png" alt="Home"></a><a accesskey="n" href="lagged_fibonacci607.html"><img src="../../../../doc/src/images/next.png" alt="Next"></a> 199</div> 200</body> 201</html> 202
