f64vector_sub    4319 ext/uvector/uvector.c     f64vector_sub("f64vector-sub", d, SCM_OBJ(s0), s1, clamp);
f64vector_sub    4325 ext/uvector/uvector.c     f64vector_sub("f64vector-sub!", SCM_OBJ(s0), SCM_OBJ(s0), s1, clamp);