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<title>EO: t-eoRoulette.cpp Source File</title>
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<h1>t-eoRoulette.cpp</h1><div class="fragment"><pre class="fragment">00001
00002 <span class="preprocessor">#include &lt;eoPop.h&gt;</span>
00003 <span class="preprocessor">#include &lt;EO.h&gt;</span>
00004 <span class="preprocessor">#include &lt;eoProportionalSelect.h&gt;</span>
00005 <span class="preprocessor">#include &lt;eoStochasticUniversalSelect.h&gt;</span>
00006
00007 <span class="keyword">class </span>TestEO : <span class="keyword">public</span> EO&lt;double&gt; { <span class="keyword">public</span>: <span class="keywordtype">unsigned</span> index; };
00008
00009 <span class="keyword">using</span> <span class="keyword">namespace </span>std;
00010
00011 <span class="keyword">template</span> &lt;<span class="keyword">class</span> Select&gt;
00012 <span class="keywordtype">int</span> test_select()
00013 {
00014 vector&lt;double&gt; probs(4);
00015 probs[0] = 0.1;
00016 probs[1] = 0.4;
00017 probs[2] = 0.2;
00018 probs[3] = 0.3;
00019
00020 vector&lt;double&gt; counts(4,0.0);
00021
00022 <span class="comment">// setup population</span>
00023 <a class="code" href="classeo_pop.html">eoPop&lt;TestEO&gt;</a> pop;
00024 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; probs.size(); ++i)
00025 {
00026 pop.push_back( TestEO());
00027 pop.back().fitness( probs[i] * 2.1232 ); <span class="comment">// some number to check scaling</span>
00028 pop.back().index = i;
00029 }
00030
00031 Select select;
00032
00033 <span class="keywordtype">unsigned</span> ndraws = 10000;
00034
00035 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; ndraws; ++i)
00036 {
00037 <span class="keyword">const</span> TestEO&amp; eo = select(pop);
00038
00039 counts[eo.index]++;
00040 }
00041
00042 cout &lt;&lt; <span class="stringliteral">"Threshold = "</span> &lt;&lt; 1./sqrt(<span class="keywordtype">double</span>(ndraws)) &lt;&lt; endl;
00043
00044 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; 4; ++i)
00045 {
00046 cout &lt;&lt; counts[i]/ndraws &lt;&lt; <span class="charliteral">' '</span>;
00047
00048 <span class="keywordtype">double</span> c = counts[i]/ndraws;
00049
00050 <span class="keywordflow">if</span> (fabs(c - probs[i]) &gt; 1./sqrt((<span class="keywordtype">double</span>)ndraws)) {
00051 cout &lt;&lt; <span class="stringliteral">"ERROR"</span> &lt;&lt; endl;
00052 <span class="keywordflow">return</span> 1;
00053 }
00054 }
00055
00056 cout &lt;&lt; endl;
00057 <span class="keywordflow">return</span> 0;
00058 }
00059
00060 <span class="keywordtype">int</span> main()
00061 {
00062 rng.<a class="code" href="classeo_rng.html#a2">reseed</a>(44);
00063
00064 <span class="keywordflow">if</span> (test_select&lt;eoProportionalSelect&lt;TestEO&gt; &gt;()) <span class="keywordflow">return</span> 1;
00065
00066 <span class="keywordflow">return</span> test_select&lt;eoStochasticUniversalSelect&lt;TestEO&gt; &gt;();
00067 }
00068
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