f32vector_sub    4242 ext/uvector/uvector.c     f32vector_sub("f32vector-sub", d, SCM_OBJ(s0), s1, clamp);
f32vector_sub    4248 ext/uvector/uvector.c     f32vector_sub("f32vector-sub!", SCM_OBJ(s0), SCM_OBJ(s0), s1, clamp);