s16vector_add    3010 ext/uvector/uvector.c     s16vector_add("s16vector-add", d, SCM_OBJ(s0), s1, clamp);
s16vector_add    3016 ext/uvector/uvector.c     s16vector_add("s16vector-add!", SCM_OBJ(s0), SCM_OBJ(s0), s1, clamp);