def METHOD_NAME(xp, xps, dtype_name):
    """Strategies inferred by dtype name generate values of a builtin type
    castable to the dtype."""
    dtype = getattr(xp, dtype_name)
    builtin = find_castable_builtin_for_dtype(xp, xps.api_version, dtype)
    assert_all_examples(xps.from_dtype(dtype_name), lambda v: isinstance(v, builtin))