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<h1>symreg.cpp</h1><div class="fragment"><pre class="fragment">00001 <span class="comment">/* </span>
00002 <span class="comment"> * Copyright (C) 2005 Maarten Keijzer</span>
00003 <span class="comment"> *</span>
00004 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
00005 <span class="comment"> * it under the terms of version 2 of the GNU General Public License as </span>
00006 <span class="comment"> * published by the Free Software Foundation. </span>
00007 <span class="comment"> *</span>
00008 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
00009 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
00010 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
00011 <span class="comment"> * GNU General Public License for more details.</span>
00012 <span class="comment"> *</span>
00013 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
00014 <span class="comment"> * along with this program; if not, write to the Free Software</span>
00015 <span class="comment"> * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA</span>
00016 <span class="comment"> */</span>
00017
00018
00019 <span class="preprocessor">#include &lt;LanguageTable.h&gt;</span>
00020 <span class="preprocessor">#include &lt;TreeBuilder.h&gt;</span>
00021 <span class="preprocessor">#include &lt;FunDef.h&gt;</span>
00022 <span class="preprocessor">#include &lt;Dataset.h&gt;</span>
00023
00024 <span class="preprocessor">#include &lt;eoSymInit.h&gt;</span>
00025 <span class="preprocessor">#include &lt;eoSym.h&gt;</span>
00026 <span class="preprocessor">#include &lt;eoPop.h&gt;</span>
00027 <span class="preprocessor">#include &lt;eoSymMutate.h&gt;</span>
00028 <span class="comment">//#include &lt;eoSymLambdaMutate.h&gt;</span>
00029 <span class="preprocessor">#include &lt;eoSymCrossover.h&gt;</span>
00030 <span class="preprocessor">#include &lt;eoSymEval.h&gt;</span>
00031 <span class="preprocessor">#include &lt;eoOpContainer.h&gt;</span>
00032 <span class="preprocessor">#include &lt;eoDetTournamentSelect.h&gt;</span>
00033 <span class="preprocessor">#include &lt;eoMergeReduce.h&gt;</span>
00034 <span class="preprocessor">#include &lt;eoGenContinue.h&gt;</span>
00035 <span class="preprocessor">#include &lt;eoEasyEA.h&gt;</span>
00036 <span class="preprocessor">#include &lt;eoGeneralBreeder.h&gt;</span>
00037
00038 <span class="preprocessor">#include &lt;utils/eoParser.h&gt;</span>
00039 <span class="preprocessor">#include &lt;utils/eoCheckPoint.h&gt;</span>
00040 <span class="preprocessor">#include &lt;utils/eoStat.h&gt;</span>
00041 <span class="preprocessor">#include &lt;utils/eoStdoutMonitor.h&gt;</span>
00042 <span class="preprocessor">#include &lt;utils/eoRNG.h&gt;</span>
00043
00044 <span class="keyword">using</span> <span class="keyword">namespace </span>std;
00045
00046 <span class="keyword">typedef</span> EoSym&lt;eoMinimizingFitness&gt; <a class="code" href="classeo_parse_tree.html">EoType</a>;
00047
00048 <span class="keyword">static</span> <span class="keywordtype">int</span> functions_added = 0;
00049
00050 <span class="keywordtype">void</span> add_function(LanguageTable&amp; table, eoParser&amp; parser, string name, <span class="keywordtype">unsigned</span> arity, token_t token, <span class="keyword">const</span> FunDef&amp; fun);
00051 <span class="keywordtype">void</span> setup_language(LanguageTable&amp; table, eoParser&amp; parser);
00052
00053 <span class="keyword">template</span> &lt;<span class="keyword">class</span> T&gt;
00054 T&amp; select(<span class="keywordtype">bool</span> check, T&amp; a, T&amp; b) { <span class="keywordflow">if</span> (check) <span class="keywordflow">return</span> a; <span class="keywordflow">return</span> b; }
00055
00056 <span class="keyword">class </span>eoBestIndividualStat : <span class="keyword">public</span> <a class="code" href="classeo_sorted_stat.html">eoSortedStat</a>&lt;EoType, string&gt; {
00057 <span class="keyword">public</span>:
00058 eoBestIndividualStat() : <a class="code" href="classeo_sorted_stat.html">eoSortedStat</a>&lt;EoType, string&gt;(<span class="stringliteral">""</span>, <span class="stringliteral">"best individual"</span>) {}
00059
00060 <span class="keywordtype">void</span> <a class="code" href="classeo_u_f.html#a1">operator()</a>(<span class="keyword">const</span> vector&lt;const EoType*&gt;&amp; _pop) {
00061 ostringstream os;
00062 os &lt;&lt; (Sym) *_pop[0];
00063 <a class="code" href="classeo_value_param.html#a2">value</a>() = os.str();
00064 }
00065
00066 };
00067
00068 <span class="keyword">class </span>AverageSizeStat : <span class="keyword">public</span> <a class="code" href="classeo_stat.html">eoStat</a>&lt;EoType, double&gt; {
00069 <span class="keyword">public</span>:
00070 AverageSizeStat() : <a class="code" href="classeo_stat.html">eoStat</a>&lt;EoType, double&gt;(0.0, <span class="stringliteral">"Average size population"</span>) {}
00071
00072 <span class="keywordtype">void</span> <a class="code" href="classeo_u_f.html#a1">operator()</a>(<span class="keyword">const</span> <a class="code" href="classeo_pop.html">eoPop&lt;EoType&gt;</a>&amp; _pop) {
00073 <span class="keywordtype">double</span> total = 0.0;
00074 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; _pop.size(); ++i) {
00075 total += _pop[i].size();
00076 }
00077 <a class="code" href="classeo_value_param.html#a2">value</a>() = total/_pop.size();
00078 }
00079 };
00080
00081 <span class="keyword">class </span>SumSizeStat : <span class="keyword">public</span> <a class="code" href="classeo_stat.html">eoStat</a>&lt;EoType, unsigned&gt; {
00082 <span class="keyword">public</span>:
00083 SumSizeStat() : <a class="code" href="classeo_stat.html">eoStat</a>&lt;EoType, unsigned&gt;(0u, <span class="stringliteral">"Number of subtrees"</span>) {}
00084
00085 <span class="keywordtype">void</span> <a class="code" href="classeo_u_f.html#a1">operator()</a>(<span class="keyword">const</span> <a class="code" href="classeo_pop.html">eoPop&lt;EoType&gt;</a>&amp; _pop) {
00086 <span class="keywordtype">unsigned</span> total = 0;
00087 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; _pop.size(); ++i) {
00088 total += _pop[i].size();
00089 }
00090 <a class="code" href="classeo_value_param.html#a2">value</a>() = total;
00091 }
00092 };
00093
00094 <span class="keyword">class </span>DagSizeStat : <span class="keyword">public</span> <a class="code" href="classeo_stat.html">eoStat</a>&lt;EoType, unsigned&gt; {
00095 <span class="keyword">public</span>:
00096 DagSizeStat() : <a class="code" href="classeo_stat.html">eoStat</a>&lt;EoType, unsigned&gt;(0u, <span class="stringliteral">"Number of distinct subtrees"</span>) {}
00097
00098 <span class="keywordtype">void</span> <a class="code" href="classeo_u_f.html#a1">operator()</a>(<span class="keyword">const</span> <a class="code" href="classeo_pop.html">eoPop&lt;EoType&gt;</a>&amp; _pop) {
00099 <a class="code" href="classeo_value_param.html#a2">value</a>() = Sym::get_dag().size();
00100 }
00101 };
00102
00103 <span class="keywordtype">int</span> main(<span class="keywordtype">int</span> argc, <span class="keywordtype">char</span>* argv[]) {
00104
00105 eoParser parser(argc, argv);
00106
00107 <span class="comment">/* Language */</span>
00108 LanguageTable table;
00109 setup_language(table, parser);
00110
00111 <span class="comment">/* Data */</span>
00112
00113 <a class="code" href="classeo_value_param.html">eoValueParam&lt;string&gt;</a> datafile = parser.createParam(string(<span class="stringliteral">""</span>), <span class="stringliteral">"datafile"</span>, <span class="stringliteral">"Training data"</span>, <span class="charliteral">'d'</span>, string(<span class="stringliteral">"Regression"</span>), <span class="keyword">true</span>); <span class="comment">// mandatory </span>
00114 <span class="keywordtype">double</span> train_percentage = parser.createParam(1.0, <span class="stringliteral">"trainperc"</span>, <span class="stringliteral">"Percentage of data used for training"</span>, 0, string(<span class="stringliteral">"Regression"</span>)).value();
00115
00116 <span class="comment">/* Population */</span>
00117
00118 <span class="keywordtype">unsigned</span> pop_size = parser.createParam(1500u, <span class="stringliteral">"population-size"</span>, <span class="stringliteral">"Population Size"</span>, <span class="charliteral">'p'</span>, string(<span class="stringliteral">"Population"</span>)).<a class="code" href="classeo_value_param.html#a2">value</a>();
00119
00120 uint32_t seed = parser.createParam( uint32_t(time(0)), <span class="stringliteral">"random-seed"</span>, <span class="stringliteral">"Seed for rng"</span>, <span class="charliteral">'D'</span>).<a class="code" href="classeo_value_param.html#a2">value</a>();
00121
00122 cout &lt;&lt; <span class="stringliteral">"Seed "</span> &lt;&lt; seed &lt;&lt; endl;
00123 rng.<a class="code" href="classeo_rng.html#a2">reseed</a>(seed);
00124
00125 <span class="keywordtype">double</span> var_prob = parser.createParam(
00126 0.9,
00127 <span class="stringliteral">"var-prob"</span>,
00128 <span class="stringliteral">"Probability of selecting a var vs. const when creating a terminal"</span>,
00129 0,
00130 <span class="stringliteral">"Population"</span>).value();
00131
00132
00133 <span class="keywordtype">double</span> grow_prob = parser.createParam(
00134 0.5,
00135 <span class="stringliteral">"grow-prob"</span>,
00136 <span class="stringliteral">"Probability of selecting 'grow' method instead of 'full' in initialization and mutation"</span>,
00137 0,
00138 <span class="stringliteral">"Population"</span>).value();
00139
00140 <span class="keywordtype">unsigned</span> max_depth = parser.createParam(
00141 8u,
00142 <span class="stringliteral">"max-depth"</span>,
00143 <span class="stringliteral">"Maximum depth used in initialization and mutation"</span>,
00144 0,
00145 <span class="stringliteral">"Population"</span>).value();
00146
00147
00148 <span class="keywordtype">bool</span> use_uniform = parser.createParam(
00149 <span class="keyword">false</span>,
00150 <span class="stringliteral">"use-uniform"</span>,
00151 <span class="stringliteral">"Use uniform node selection instead of bias towards internal nodes (functions)"</span>,
00152 0,
00153 <span class="stringliteral">"Population"</span>).value();
00154
00155 <span class="keywordtype">double</span> constant_mut_prob = parser.createParam(
00156 0.1,
00157 <span class="stringliteral">"constant-mut-rate"</span>,
00158 <span class="stringliteral">"Probability of performing constant mutation"</span>,
00159 0,
00160 <span class="stringliteral">"Population"</span>).value();
00161
00162
00163 <span class="keywordtype">double</span> subtree_mut_prob = parser.createParam(
00164 0.2,
00165 <span class="stringliteral">"subtree-mut-rate"</span>,
00166 <span class="stringliteral">"Probability of performing subtree mutation"</span>,
00167 0,
00168 <span class="stringliteral">"Population"</span>).value();
00169
00170 <span class="keywordtype">double</span> node_mut_prob = parser.createParam(
00171 0.2,
00172 <span class="stringliteral">"node-mut-rate"</span>,
00173 <span class="stringliteral">"Probability of performing node mutation"</span>,
00174 0,
00175 <span class="stringliteral">"Population"</span>).value();
00176
00177 <span class="comment">/* double lambda_mut_prob = parser.createParam(</span>
00178 <span class="comment"> 1.0,</span>
00179 <span class="comment"> "lambda-mut-rate",</span>
00180 <span class="comment"> "Probability of performing (neutral) lambda extraction/expansion",</span>
00181 <span class="comment"> 0,</span>
00182 <span class="comment"> "Population").value();</span>
00183 <span class="comment">*/</span>
00184 <span class="keywordtype">double</span> subtree_xover_prob = parser.createParam(
00185 0.4,
00186 <span class="stringliteral">"xover-rate"</span>,
00187 <span class="stringliteral">"Probability of performing subtree crossover"</span>,
00188 0,
00189 <span class="stringliteral">"Population"</span>).value();
00190
00191 <span class="keywordtype">double</span> homologous_prob = parser.createParam(
00192 0.4,
00193 <span class="stringliteral">"homologous-rate"</span>,
00194 <span class="stringliteral">"Probability of performing homologous crossover"</span>,
00195 0,
00196 <span class="stringliteral">"Population"</span>).value();
00197
00198 <span class="keywordtype">unsigned</span> max_gens = parser.createParam(
00199 50,
00200 <span class="stringliteral">"max-gens"</span>,
00201 <span class="stringliteral">"Maximum number of generations to run"</span>,
00202 <span class="charliteral">'g'</span>,
00203 <span class="stringliteral">"Population"</span>).value();
00204
00205 <span class="keywordtype">unsigned</span> tournamentsize = parser.createParam(
00206 5,
00207 <span class="stringliteral">"tournament-size"</span>,
00208 <span class="stringliteral">"Tournament size used for selection"</span>,
00209 <span class="charliteral">'t'</span>,
00210 <span class="stringliteral">"Population"</span>).value();
00211
00212 <span class="keywordtype">unsigned</span> maximumSize = parser.createParam(
00213 -1u,
00214 <span class="stringliteral">"maximum-size"</span>,
00215 <span class="stringliteral">"Maximum size after crossover"</span>,
00216 <span class="charliteral">'s'</span>,
00217 <span class="stringliteral">"Population"</span>).value();
00218
00219 <span class="keywordtype">unsigned</span> meas_param = parser.createParam(
00220 2u,
00221 <span class="stringliteral">"measure"</span>,
00222 <span class="stringliteral">"Error measure:\n\</span>
00223 <span class="stringliteral"> 0 -&gt; absolute error\n\</span>
00224 <span class="stringliteral"> 1 -&gt; mean squared error\n\</span>
00225 <span class="stringliteral"> 2 -&gt; mean squared error scaled (equivalent with correlation)\n\</span>
00226 <span class="stringliteral"> "</span>,
00227 <span class="charliteral">'m'</span>,
00228 <span class="stringliteral">"Regression"</span>).value();
00229
00230
00231 ErrorMeasure::measure meas = ErrorMeasure::mean_squared_scaled;
00232 <span class="keywordflow">if</span> (meas_param == 0) meas = ErrorMeasure::absolute;
00233 <span class="keywordflow">if</span> (meas_param == 1) meas = ErrorMeasure::mean_squared;
00234
00235
00236 <span class="comment">/* End parsing */</span>
00237 <span class="keywordflow">if</span> (parser.userNeedsHelp())
00238 {
00239 parser.printHelp(std::cout);
00240 <span class="keywordflow">return</span> 1;
00241 }
00242
00243 <span class="keywordflow">if</span> (functions_added == 0) {
00244 cout &lt;&lt; <span class="stringliteral">"ERROR: no functions defined"</span> &lt;&lt; endl;
00245 exit(1);
00246 }
00247
00248
00249 Dataset dataset;
00250 dataset.load_data(datafile.<a class="code" href="classeo_value_param.html#a2">value</a>());
00251
00252 cout &lt;&lt; <span class="stringliteral">"Data "</span> &lt;&lt; datafile.<a class="code" href="classeo_value_param.html#a2">value</a>() &lt;&lt; <span class="stringliteral">" loaded "</span> &lt;&lt; endl;
00253
00254 <span class="comment">/* Add Variables */</span>
00255 <span class="keywordtype">unsigned</span> nvars = dataset.n_fields();
00256 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> i = 0; i &lt; nvars; ++i) {
00257 table.add_function( SymVar(i).token(), 0);
00258 }
00259
00260 TreeBuilder builder(table, var_prob);
00261 <a class="code" href="classeo_sym_init.html">eoSymInit&lt;EoType&gt;</a> init(builder, grow_prob, max_depth);
00262
00263 <a class="code" href="classeo_pop.html">eoPop&lt;EoType&gt;</a> pop(pop_size, init);
00264
00265 <a class="code" href="class_biased_node_selector.html">BiasedNodeSelector</a> biased_sel;
00266 <a class="code" href="class_random_node_selector.html">RandomNodeSelector</a> random_sel;
00267
00268 <a class="code" href="class_node_selector.html">NodeSelector</a>&amp; node_selector = select&lt;NodeSelector&gt;(use_uniform, random_sel, biased_sel);
00269
00270 <span class="comment">//eoProportionalOp&lt;EoType&gt; genetic_operator;</span>
00271 <a class="code" href="classeo_sequential_op.html">eoSequentialOp&lt;EoType&gt;</a> genetic_operator;
00272
00273 eoSymSubtreeMutate&lt;EoType&gt; submutate(builder, node_selector);
00274 genetic_operator.<a class="code" href="classeo_op_container.html#a3">add</a>( submutate, subtree_mut_prob);
00275
00276 <span class="comment">// todo, make this parameter, etc</span>
00277 <span class="keywordtype">double</span> std = 0.01;
00278 eoSymConstantMutate&lt;EoType&gt; constmutate(std);
00279 genetic_operator.<a class="code" href="classeo_op_container.html#a3">add</a>(constmutate, constant_mut_prob);
00280
00281 eoSymNodeMutate&lt;EoType&gt; nodemutate(table);
00282 genetic_operator.<a class="code" href="classeo_op_container.html#a3">add</a>(nodemutate, node_mut_prob);
00283
00284 <span class="comment">// eoSymLambdaMutate&lt;EoType&gt; lambda_mutate(node_selector);</span>
00285 <span class="comment">// genetic_operator.add(lambda_mutate, lambda_mut_prob); // TODO: prob should be settable</span>
00286
00287 <span class="comment">//eoQuadSubtreeCrossover&lt;EoType&gt; quad(node_selector);</span>
00288 eoBinSubtreeCrossover&lt;EoType&gt; bin(node_selector);
00289 genetic_operator.<a class="code" href="classeo_op_container.html#a3">add</a>(bin, subtree_xover_prob);
00290
00291 eoBinHomologousCrossover&lt;EoType&gt; hom;
00292 genetic_operator.<a class="code" href="classeo_op_container.html#a3">add</a>(hom, homologous_prob);
00293
00294
00295 IntervalBoundsCheck check(dataset.input_minima(), dataset.input_maxima());
00296 ErrorMeasure measure(dataset, train_percentage, meas);
00297
00298 eoSymPopEval&lt;EoType&gt; evaluator(check, measure, maximumSize);
00299
00300 <a class="code" href="classeo_det_tournament_select.html">eoDetTournamentSelect&lt;EoType&gt;</a> selectOne(tournamentsize);
00301 <a class="code" href="classeo_general_breeder.html">eoGeneralBreeder&lt;EoType&gt;</a> breeder(selectOne, genetic_operator);
00302 <a class="code" href="classeo_plus_replacement.html">eoPlusReplacement&lt;EoType&gt;</a> replace;
00303
00304 <span class="comment">// Terminators</span>
00305 <a class="code" href="classeo_gen_continue.html">eoGenContinue&lt;EoType&gt;</a> term(max_gens);
00306 <a class="code" href="classeo_check_point.html">eoCheckPoint&lt;EoType&gt;</a> checkpoint(term);
00307
00308 <a class="code" href="classeo_best_fitness_stat.html">eoBestFitnessStat&lt;EoType&gt;</a> beststat;
00309 checkpoint.<a class="code" href="classeo_op_container.html#a3">add</a>(beststat);
00310
00311 eoBestIndividualStat printer;
00312 AverageSizeStat avgSize;
00313 DagSizeStat dagSize;
00314 SumSizeStat sumSize;
00315
00316 checkpoint.<a class="code" href="classeo_op_container.html#a3">add</a>(printer);
00317 checkpoint.<a class="code" href="classeo_op_container.html#a3">add</a>(avgSize);
00318 checkpoint.<a class="code" href="classeo_op_container.html#a3">add</a>(dagSize);
00319 checkpoint.<a class="code" href="classeo_op_container.html#a3">add</a>(sumSize);
00320
00321 <a class="code" href="classeo_stdout_monitor.html">eoStdoutMonitor</a> genmon;
00322 genmon.<a class="code" href="classeo_monitor.html#a1">add</a>(beststat);
00323 genmon.<a class="code" href="classeo_monitor.html#a1">add</a>(printer);
00324 genmon.<a class="code" href="classeo_monitor.html#a1">add</a>(avgSize);
00325 genmon.<a class="code" href="classeo_monitor.html#a1">add</a>(dagSize);
00326 genmon.<a class="code" href="classeo_monitor.html#a1">add</a>(sumSize);
00327 genmon.<a class="code" href="classeo_monitor.html#a1">add</a>(term); <span class="comment">// add generation counter</span>
00328
00329 checkpoint.<a class="code" href="classeo_monitor.html#a1">add</a>(genmon);
00330
00331 <a class="code" href="classeo_pop.html">eoPop&lt;EoType&gt;</a> dummy;
00332 evaluator(pop, dummy);
00333
00334 <a class="code" href="classeo_easy_e_a.html">eoEasyEA&lt;EoType&gt;</a> ea(checkpoint, evaluator, breeder, replace);
00335
00336 ea(pop); <span class="comment">// run</span>
00337
00338 }
00339
00340 <span class="keywordtype">void</span> add_function(LanguageTable&amp; table, eoParser&amp; parser, string name, <span class="keywordtype">unsigned</span> arity, token_t token, <span class="keyword">const</span> FunDef&amp; fun, <span class="keywordtype">bool</span> all) {
00341 ostringstream desc;
00342 desc &lt;&lt; <span class="stringliteral">"Enable function "</span> &lt;&lt; name &lt;&lt; <span class="stringliteral">" arity = "</span> &lt;&lt; arity;
00343 <span class="keywordtype">bool</span> enabled = parser.createParam(<span class="keyword">false</span>, name, desc.str(), 0, <span class="stringliteral">"Language"</span>).value();
00344
00345 <span class="keywordflow">if</span> (enabled || all) {
00346 cout &lt;&lt; <span class="stringliteral">"Func "</span> &lt;&lt; name &lt;&lt; <span class="stringliteral">" enabled"</span> &lt;&lt; endl;
00347 table.add_function(token, arity);
00348 <span class="keywordflow">if</span> (arity &gt; 0) functions_added++;
00349 }
00350 }
00351
00352 <span class="keywordtype">void</span> setup_language(LanguageTable&amp; table, eoParser&amp; parser) {
00353
00354 <span class="keywordtype">bool</span> all = parser.createParam(<span class="keyword">false</span>,<span class="stringliteral">"all"</span>, <span class="stringliteral">"Enable all functions"</span>).value();
00355 <span class="keywordtype">bool</span> ratio = parser.createParam(<span class="keyword">false</span>,<span class="stringliteral">"ratio"</span>,<span class="stringliteral">"Enable rational functions (inv,min,sum,prod)"</span>).value();
00356 <span class="keywordtype">bool</span> poly = parser.createParam(<span class="keyword">false</span>,<span class="stringliteral">"poly"</span>,<span class="stringliteral">"Enable polynomial functions (min,sum,prod)"</span>).value();
00357
00358 <span class="comment">// assumes that at this point all tokens are defined (none are zeroed out, which can happen with ERCs)</span>
00359 vector&lt;const FunDef*&gt; lang = get_defined_functions();
00360
00361 <span class="keywordflow">for</span> (token_t i = 0; i &lt; lang.size(); ++i) {
00362
00363 <span class="keywordflow">if</span> (lang[i] == 0) <span class="keywordflow">continue</span>;
00364
00365 <span class="keywordtype">bool</span> is_poly = <span class="keyword">false</span>;
00366 <span class="keywordflow">if</span> (poly &amp;&amp; (i == prod_token || i == sum_token || i == min_token) ) {
00367 is_poly = <span class="keyword">true</span>;
00368 }
00369
00370 <span class="keywordtype">bool</span> is_ratio = <span class="keyword">false</span>;
00371 <span class="keywordflow">if</span> (ratio &amp;&amp; (is_poly || i == inv_token)) {
00372 is_ratio = <span class="keyword">true</span>;
00373 }
00374
00375 <span class="keyword">const</span> FunDef&amp; fun = *lang[i];
00376
00377 <span class="keywordflow">if</span> (fun.has_varargs() ) {
00378
00379 <span class="keywordflow">for</span> (<span class="keywordtype">unsigned</span> j = fun.min_arity(); j &lt; fun.min_arity() + 8; ++j) {
00380 <span class="keywordflow">if</span> (j==1) <span class="keywordflow">continue</span>; <span class="comment">// prod 1 and sum 1 are useless</span>
00381 ostringstream nm;
00382 nm &lt;&lt; fun.name() &lt;&lt; j;
00383 <span class="keywordtype">bool</span> addanyway = (all || is_ratio || is_poly) &amp;&amp; j == 2;
00384 add_function(table, parser, nm.str(), j, i, fun, addanyway);
00385 }
00386 }
00387 <span class="keywordflow">else</span> {
00388 add_function(table, parser, fun.name(), fun.min_arity(), i, fun, all || is_ratio || is_poly);
00389 }
00390 }
00391 }
00392
00393
</pre></div><hr size="1"><address style="align: right;"><small>Generated on Thu Oct 19 05:06:43 2006 for EO by&nbsp;
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<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.3.9.1 </small></address>
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