
{{alias}}( σ )
    Returns the median of a Rayleigh distribution.

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

    If provided `σ < 0`, the function returns `NaN`.

    Parameters
    ----------
    σ: number
        Scale parameter.

    Returns
    -------
    out: number
        Median.

    Examples
    --------
    > var v = {{alias}}( 11.0 )
    ~12.952
    > v = {{alias}}( 4.5 )
    ~5.298

    See Also
    --------

