diff --git a/nlsr-sync-0.0/nlsr_lsdb.h b/nlsr-sync-0.0/nlsr_lsdb.h
index 420e178..c67348e 100755
--- a/nlsr-sync-0.0/nlsr_lsdb.h
+++ b/nlsr-sync-0.0/nlsr_lsdb.h
@@ -99,5 +99,7 @@
 
 void write_cor_lsa_to_repo(struct clsa *cor_lsa);
 void build_and_install_others_cor_lsa(char *orig_router,int ls_type,char *orig_time, double cor_r, double cor_theta);
+double get_hyperbolic_r(char *router);
+double get_hyperbolic_theta(char *router);
 
 #endif