Added mathsym+tcc and boost against all advice

eo/contrib/mathsym/eo_interface/eoSymMutate.h

@@ -0,0 +1,122 @@
+/*	    
+ *             Copyright (C) 2005 Maarten Keijzer
+ *
+ *          This program is free software; you can redistribute it and/or modify
+ *          it under the terms of version 2 of the GNU General Public License as 
+ *          published by the Free Software Foundation. 
+ *
+ *          This program is distributed in the hope that it will be useful,
+ *          but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *          MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *          GNU General Public License for more details.
+ *
+ *          You should have received a copy of the GNU General Public License
+ *          along with this program; if not, write to the Free Software
+ *          Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#ifndef SYMMUTATE_H
+#define SYMMUTATE_H
+
+#include <TreeBuilder.h>
+#include <NodeSelector.h>
+
+#include <eoSym.h>
+#include <eoOp.h>
+
+template <class EoType>
+class eoSymSubtreeMutate : public eoMonOp<EoType> {
+    
+	TreeBuilder& subtree_builder;
+	NodeSelector& node_selector;
+    
+    public :
+	
+	eoSymSubtreeMutate(TreeBuilder& _subtree_builder, NodeSelector& _node_selector)
+	: subtree_builder(_subtree_builder), node_selector(_node_selector) {}
+	
+	
+	bool operator()(EoType& tomutate) {
+	    unsigned xover_point = node_selector.select_node(tomutate);
+	    // create subtree
+	    Sym newtree = subtree_builder.build_tree(6, true); // TODO, parameterize
+	    static_cast<Sym&>(tomutate) = insert_subtree(tomutate, xover_point, newtree);
+	    return true;
+	}
+    
+};
+
+/** Class for doing node mutation
+ * Two parameters:
+ * 
+ *	mutation_rate (the rate at which to do mutation)
+ *	is_rate_absolute : don't rescale the rate to the size of the tree
+ */
+
+template <class EoType>
+class eoSymNodeMutate : public eoMonOp<EoType> {
+    
+	LanguageTable& table;
+	double own_mutation_rate;
+	bool   own_is_rate_absolute;
+	
+	// these two can (should?) move to an impl file
+	bool mutate(Sym& sym, double p) {
+	    std::pair<Sym, bool> r = do_mutate(sym, p);
+	    sym = r.first;
+	    return r.second;
+	}
+	
+	std::pair<Sym, bool> do_mutate(Sym sym, double p) {
+	    
+	    bool changed = false;
+	    SymVec args = sym.args();
+	    if (rng.flip(p)) {
+		token_t new_token = table.get_random_function( args.size());
+		if (new_token != sym.token()) changed = true;
+		sym = Sym(new_token, args);
+	    }
+
+	    for (unsigned i = 0; i < args.size(); ++i) {
+		std::pair<Sym,bool> r = do_mutate(args[i], p);	
+		changed |= r.second;
+		if (r.second) 
+		    args[i] = r.first;
+	    }
+
+	    if (changed)
+		return std::make_pair(Sym(sym.token(), args), true);
+	    // else
+	    return std::make_pair(sym, false);
+	}
+	
+    public:
+	
+	double& mutation_rate;
+	bool& is_rate_absolute;
+	    
+	eoSymNodeMutate(LanguageTable& _table)
+	:   table(_table),
+	    own_mutation_rate(1.0),
+	    own_is_rate_absolute(false), // this means a probability of node mutation of 1/sym.size()
+	    mutation_rate(own_mutation_rate),
+	    is_rate_absolute(own_is_rate_absolute)
+	{}
+
+	eoSymNodeMutate(LanguageTable& _table, double& _mutation_rate, bool& _is_rate_absolute) 
+	:   table(_table),
+	    mutation_rate(_mutation_rate),
+	    is_rate_absolute(_is_rate_absolute) 
+	{}
+
+	
+	bool operator()(EoType& _eo) {
+	    double p = mutation_rate;
+	    if (!is_rate_absolute) p /= _eo.size();
+
+	    return mutate(_eo, p);
+	}
+	
+};
+
+#endif