
{{alias}}( x, μ, β )
    Evaluates the cumulative distribution function (CDF) 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 CDF.

    Examples
    --------
    > var y = {{alias}}( 10.0, 0.0, 3.0 )
    ~0.965
    > y = {{alias}}( -2.0, 0.0, 3.0 )
    ~0.143
    > y = {{alias}}( 0.0, 0.0, 1.0 )
    ~0.368
    > 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}}( 0.0, 0.0, -1.0 )
    NaN


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

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

    β: number
        Scale parameter.

    Returns
    -------
    cdf: Function
        Cumulative distribution function (CDF).

    Examples
    --------
    > var myCDF = {{alias}}.factory( 2.0, 3.0 );
    > var y = myCDF( 10.0 )
    ~0.933
    > y = myCDF( 2.0 )
    ~0.368

    See Also
    --------

