1 files changed, 5 insertions, 2 deletions

diff --git a/src/ll.h b/src/ll.h
index f5846fb..6e79ccd 100644
--- a/src/ll.h
+++ b/src/ll.h
@@ -6,8 +6,8 @@
 typedef int (*dlinkedlist_freecallback)(void*);
 typedef struct dlinkedlist dlinkedlist;
 
-void dlinkedlist_init(dlinkedlist **ll);
-void dlinkedlist_free(dlinkedlist **ll);
+dlinkedlist * dlinkedlist_init(void);
+int dlinkedlist_free(dlinkedlist **ll);
 
 int dlinkedlist_insert(dlinkedlist * const ll, void *data, dlinkedlist_freecallback dfreecb);
 int dlinkedlist_append(dlinkedlist * const ll, void *data, dlinkedlist_freecallback dfreecb);
@@ -16,4 +16,7 @@ void *dlinkedlist_getfirst(const dlinkedlist * const ll);
 void *dlinkedlist_getlast(const dlinkedlist * const ll);
 int dlinkedlist_remove(dlinkedlist * const ll, size_t index);
 
+size_t dlinkedlist_size(const dlinkedlist * const ll);
+int dlinkedlist_isempty(const dlinkedlist * const ll);
+
 #endif
\ No newline at end of file