
{{alias}}( x, μ, β )
    Evaluates the probability density function (PDF) for a Gumbel distribution
    with location parameter `μ` and scale parameter `β` at a value `x`.

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

    If provided `β <= 0`, the function returns `NaN`.

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

    μ: number
        Location parameter.

    β: number
        Scale parameter.

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

    Examples
    --------
    > var y = {{alias}}( 0.0, 0.0, 2.0 )
    ~0.184
    > y = {{alias}}( 0.0, 0.0, 1.0 )
    ~0.368
    > y = {{alias}}( 1.0, 3.0, 2.0 )
    ~0.09
    > y = {{alias}}( NaN, 0.0, 1.0 )
    NaN
    > y = {{alias}}( 0.0, NaN, 1.0 )
    NaN
    > y = {{alias}}( 0.0, 0.0, NaN )
    NaN
    // Negative scale parameter:
    > y = {{alias}}( 2.0, 0.0, -1.0 )
    NaN


{{alias}}.factory( μ, β )
    Returns a function for evaluating the probability density function (PDF)
    of a Gumbel distribution with location parameter `μ` and scale parameter
    `β`.

    Parameters
    ----------
    μ: number
        Location parameter.

    β: number
        Scale parameter.

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

    Examples
    --------
    > var myPDF = {{alias}}.factory( 10.0, 2.0 );
    > var y = myPDF( 10.0 )
    ~0.184
    > y = myPDF( 12.0 )
    ~0.127

    See Also
    --------

