u64vector_xor    6636 ext/uvector/uvector.c     u64vector_xor("u64vector-xor", d, SCM_OBJ(s0), s1);
u64vector_xor    6642 ext/uvector/uvector.c     u64vector_xor("u64vector-xor!", SCM_OBJ(s0), SCM_OBJ(s0), s1);