
{{alias}}( p, k )
    Evaluates the quantile function for a chi distribution with degrees of
    freedom `k` at a probability `p`.

    If `p < 0` or `p > 1`, the function returns `NaN`.

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

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

    Parameters
    ----------
    p: number
        Input probability.

    k: number
        Degrees of freedom.

    Returns
    -------
    out: number
        Evaluated quantile function.

    Examples
    --------
    > var y = {{alias}}( 0.8, 1.0 )
    ~1.282
    > y = {{alias}}( 0.5, 4.0 )
    ~1.832
    > y = {{alias}}( 0.8, 0.1 )
    ~0.116
    > y = {{alias}}( -0.2, 0.5 )
    NaN
    > y = {{alias}}( 1.1, 0.5 )
    NaN
    > y = {{alias}}( NaN, 1.0 )
    NaN
    > y = {{alias}}( 0.0, NaN )
    NaN

    // Negative degrees of freedom:
    > y = {{alias}}( 0.5, -1.0 )
    NaN

    // Degenerate distribution when `k = 0`:
    > y = {{alias}}( 0.3, 0.0 )
    0.0
    > y = {{alias}}( 0.9, 0.0 )
    0.0


{{alias}}.factory( k )
    Returns a function for evaluating the quantile function of a chi
    distribution with degrees of freedom `k`.

    Parameters
    ----------
    k: number
        Degrees of freedom.

    Returns
    -------
    quantile: Function
        Quantile function.

    Examples
    --------
    > var myquantile = {{alias}}.factory( 2.0 );
    > var y = myquantile( 0.3 )
    ~0.845
    > y = myquantile( 0.7 )
    ~1.552

    See Also
    --------

