{{alias}}( dtypeX, dtypeY, dtypeZ )
    Returns a loop block size for multi-dimensional array tiled loops.

    Parameters
    ----------
    dtypeX: string|DataType
        First input array data type.

    dtypeY: string|DataType
        Second input array data type.

    dtypeZ: string|DataType
        Output array data type.

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

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

    See Also
    --------