
{{alias}}( x )
    Computes the hyperbolic arcsecant of a number.

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

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

    Returns
    -------
    y: number
        Hyperbolic arcsecant.

    Examples
    --------
    > var y = {{alias}}( 1.0 )
    0.0
    > y = {{alias}}( 0.5 )
    ~1.317
    > y = {{alias}}( NaN )
    NaN

    See Also
    --------

