u16vector_sub    3857 ext/uvector/uvector.c     u16vector_sub("u16vector-sub", d, SCM_OBJ(s0), s1, clamp);
u16vector_sub    3863 ext/uvector/uvector.c     u16vector_sub("u16vector-sub!", SCM_OBJ(s0), SCM_OBJ(s0), s1, clamp);