nucomp_s_convert 1393 complex.c      static VALUE nucomp_s_convert(int argc, VALUE *argv, VALUE klass);
nucomp_s_convert 1401 complex.c          return nucomp_s_convert(2, a, rb_cComplex);
nucomp_s_convert 2243 complex.c          rb_define_private_method(CLASS_OF(rb_cComplex), "convert", nucomp_s_convert, -1);