1 files changed, 1 insertions, 0 deletions
diff --git a/lib.h b/lib.h
index ae5bb79e..cf397751 100644
--- a/lib.h
+++ b/lib.h
@@ -270,6 +270,7 @@ val nreverse(val in);
 val reverse(val in);
 val append2(val list1, val list2);
 val nappend2(val list1, val list2);
+val ldiff(val list1, val list2);
 val flatten(val list);
 val memq(val obj, val list);
 val memqual(val obj, val list);