{{alias}}( a, b )
    Returns the expected value of a discrete uniform distribution.

    If `a > b`, the function returns `NaN`.

    If `a` or `b` is not an integer value, the function returns `NaN`.

    Parameters
    ----------
    a: integer
        Minimum support.

    b: integer
        Maximum support.

    Returns
    -------
    out: number
        Expected value.

    Examples
    --------
    > var v = {{alias}}( -2, 2 )
    0.0
    > v = {{alias}}( 4, 12 )
    8.0
    > v = {{alias}}( 2, 8 )
    5.0

    See Also
    --------