
{{alias}}( x )
    Computes the versed sine of a single-precision floating-point number
    (in radians).

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

    Parameters
    ----------
    x: number
        Input value (in radians).

    Returns
    -------
    y: number
        Versed sine.

    Examples
    --------
    > var y = {{alias}}( 3.14 )
    ~2.0
    > y = {{alias}}( -4.2 )
    ~1.490
    > y = {{alias}}( -4.6 )
    ~1.112
    > y = {{alias}}( 9.5 )
    ~1.997
    > y = {{alias}}( -0.0 )
    0.0

    See Also
    --------

