
{{alias}}( x )
    Computes the half-value coversed sine.

    The half-value coversed sine is defined as `(1 - sin(x)) / 2`.

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

    Returns
    -------
    y: number
        Half-value coversed sine.

    Examples
    --------
    > var y = {{alias}}( 3.14 )
    ~0.4992
    > y = {{alias}}( -4.2 )
    ~0.0642
    > y = {{alias}}( -4.6 )
    ~0.0032
    > y = {{alias}}( 9.5 )
    ~0.538
    > y = {{alias}}( -0.0 )
    0.5

    See Also
    --------

