add nb_genes_activ function to Individual_7

src/libaevol/7/Individual_7.cpp

@@ -2132,6 +2132,15 @@ int32_t Individual_7::find_alignment(int32_t nb_tries,
   return cur_score;
 }
 
+
+int32_t Individual_7::nb_genes_activ(){
+  return annotated_chromosome_[A]->nb_genes_activ
+  #ifdef __EUKARYOTE
+  + annotated_chromosome_[B]->nb_genes_activ
+  #endif
+  ;
+}
+
 int32_t Individual_7::nb_genes_inhib(){
   return annotated_chromosome_[A]->nb_genes_inhib
   #ifdef __EUKARYOTE

src/libaevol/7/Individual_7.h

@@ -150,6 +150,7 @@ class Individual_7 : public Observable {
   bool inverted_parents_;
 
   int32_t dna_length();
+  int32_t nb_genes_activ();
   int32_t nb_genes_inhib();
   int32_t nb_func_genes();
   int32_t nb_coding_RNAs();