{{alias}}( dtypes )
    Returns a loop block size for multi-dimensional array tiled loops.

    Parameters
    ----------
    dtypes: Array<string|DataType>
        List of input and output ndarray data types.

    Returns
    -------
    out: integer
        Block size.

    Examples
    --------
    > var out = {{alias}}( [ 'float64', 'float64', 'float64', 'float64' ] )
    <number>
    > out = {{alias}}( [ 'float64', 'int32', 'float64', 'float64' ] )
    <number>

    See Also
    --------