1 files changed, 10 insertions, 14 deletions

diff --git a/src/ll.h b/src/ll.h
index 6e79ccd..6e4ccf9 100644
--- a/src/ll.h
+++ b/src/ll.h
@@ -1,22 +1,18 @@
 #ifndef __VXGG_REWRITE___LL_H___305861098005___
 #define __VXGG_REWRITE___LL_H___305861098005___
 
-#include <stddef.h>
+typedef int (*dll_freecb)(void*);
+typedef struct dlinked dlinkedlist;
 
-typedef int (*dlinkedlist_freecallback)(void*);
-typedef struct dlinkedlist dlinkedlist;
-
-dlinkedlist * dlinkedlist_init(void);
+dlinkedlist* dlinkedlist_init(void);
 int dlinkedlist_free(dlinkedlist **ll);
+int dlinkedlist_append(dlinkedlist * const ll, void *data, dll_freecb fcb);
+int dlinkedlist_prepend(dlinkedlist * const ll, void *data, dll_freecb fcb);
+int dlinkedlist_insert(dlinkedlist * const ll, void *data, dll_freecb fcb, int index);
+void* dlinkedlist_get(const dlinkedlist * const ll, int index);
+int dlinkedlist_remove(dlinkedlist * const ll, int index);
 
-int dlinkedlist_insert(dlinkedlist * const ll, void *data, dlinkedlist_freecallback dfreecb);
-int dlinkedlist_append(dlinkedlist * const ll, void *data, dlinkedlist_freecallback dfreecb);
-void *dlinkedlist_get(const dlinkedlist * const ll, size_t index);
-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);
+int dlinkedlist_size(const dlinkedlist * const ll);
+#define dlinkedlist_isempty(ll) (dlinkedlist_size((ll)) == 0)
 
 #endif
\ No newline at end of file