
{{alias}}( x )
    Evaluates Binet's formula extended to real numbers.

    If provided `NaN`, the function returns `NaN`.

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

    Returns
    -------
    y: number
        Function result.

    Examples
    --------
    > var y = {{alias}}( 0.0 )
    0.0
    > y = {{alias}}( 1.0 )
    1.0
    > y = {{alias}}( 2.0 )
    1.0
    > y = {{alias}}( 3.0 )
    2.0
    > y = {{alias}}( 4.0 )
    3.0
    > y = {{alias}}( 5.0 )
    ~5.0
    > y = {{alias}}( NaN )
    NaN

    See Also
    --------

