Scm_F64VectorRef  624 ext/uvector/gauche/uvector.h extern ScmObj Scm_F64VectorRef(ScmF64Vector *vec, int index, ScmObj fallback);
Scm_F64VectorRef 4175 ext/uvector/uvlib.c SCM_RETURN(Scm_F64VectorRef(v, i, fallback));