
{{alias}}( x, n )
    Evaluates the probability density function (PDF) for the distribution of
    the Wilcoxon signed rank test statistic with `n` observations.

    If provided `NaN` as any argument, the function returns `NaN`.

    If provided a negative value for `x`, the function returns `NaN`.

    If not provided a positive integer for `n`, the function returns `NaN`.

    Parameters
    ----------
    x: number
        Input value.

    n: integer
        Number of observations.

    Returns
    -------
    out: number
        Evaluated PDF.

    Examples
    --------
    > var y = {{alias}}( 3, 7 )
    ~0.0156
    > y = {{alias}}( 1.8, 3 )
    0.0
    > y = {{alias}}( -1.0, 40 )
    0.0
    > y = {{alias}}( NaN, 10 )
    NaN
    > y = {{alias}}( 0.0, NaN )
    NaN


{{alias}}.factory( n )
    Returns a function for evaluating the probability density function (PDF)
    of the distribution of the Wilcoxon signed rank test statistic.

    Parameters
    ----------
    n: integer
        Number of observations.

    Returns
    -------
    pdf: Function
        Probability density function (PDF).

    Examples
    --------
    > var myPDF = {{alias}}.factory( 8 );
    > var y = myPDF( 6.0 )
    ~0.0156
    > y = myPDF( 2.0 )
    ~0.0039

    See Also
    --------

