-XBT_PRIVATE As *model_cluster_create(void); /* create structures for cluster routing model */
-XBT_PRIVATE As *model_torus_cluster_create(void);
-XBT_PRIVATE As *model_fat_tree_cluster_create(void);
+XBT_PRIVATE surf_As *model_cluster_create(void); /* create structures for cluster routing model */
+XBT_PRIVATE surf_As *model_torus_cluster_create(void);
+XBT_PRIVATE surf_As *model_fat_tree_cluster_create(void);