
{{alias}}( x )
    Computes the inverse versed sine.

    The inverse versed sine is defined as `acos(1-x)`.

    If `x < 0`, `x > 2`, or `x` is `NaN`, the function returns `NaN`.

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

    Returns
    -------
    y: number
        Inverse versed sine.

    Examples
    --------
    > var y = {{alias}}( 1.5 )
    ~2.0944
    > y = {{alias}}( 0.0 )
    0.0

    See Also
    --------

