added eoEpsMOEA support

eo/test/t-eoNSGA.cpp

@@ -8,11 +8,12 @@
 
 using namespace std;
 
-// Look: overloading the maximization without overhead (thing can be inlined)
-class MinimizingFitnessTraits : public eoMOFitnessTraits
+class MinimizingFitnessTraits 
 {
   public :
-  static double maximizing(int) { return -1; }
+  static unsigned nObjectives()         { return 2; }
+  static double direction(unsigned)     { return -1; }
+  static double tol()                   { return 1e-9; }
 };
 
 typedef eoMOFitness<MinimizingFitnessTraits> fitness_type;
@@ -45,12 +46,27 @@ class Mutate : public eoMonOp<eoDouble>
   }
 };
 
+class Cross : public eoBinOp<eoDouble> {
+  
+  bool operator()(eoDouble& _eo, const eoDouble& eo2)
+  {
+    for (unsigned i = 0; i < chromsize; ++i)
+    {
+      if (rng.flip(0.5)) {
+           _eo.value[i] = eo2.value[i];
+    }
+    }
+    return true;
+  }
+
+};
+
 class Eval : public eoEvalFunc<eoDouble>
 {
   void operator()(eoDouble& _eo)
   {
     vector<double> x(_eo.value, _eo.value + chromsize);
-    fitness_type f;
+    fitness_type f(0.0);
 
     for (unsigned i = 0; i < chromsize; ++i)
     {
@@ -121,6 +137,7 @@ void the_main(int argc, char* argv[])
   Init init;
   Eval simple_eval;
   Mutate mutate;
+  Cross cross;
 
   eoParser parser(argc, argv);
   eoState state;
@@ -138,6 +155,7 @@ void the_main(int argc, char* argv[])
   // One general operator
   eoProportionalOp<eoDouble> opsel;
   opsel.add(mutate, 1.0);
+  opsel.add(cross, 1.0);
 
   // the breeder
   eoGeneralBreeder<eoDouble> breeder(select, opsel);