
{{alias}}( x )
    Computes the cosine of a number minus one.

    This function should be used instead of manually calculating `cos(x)-1` when
    `x` is near unity.

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

    Returns
    -------
    y: number
        Cosine minus one.

    Examples
    --------
    > var y = {{alias}}( 0.0 )
    0.0
    > y = {{alias}}( {{alias:@stdlib/constants/float64/pi}}/4.0 )
    ~-0.293
    > y = {{alias}}( -{{alias:@stdlib/constants/float64/pi}}/6.0 )
    ~-0.134
    > y = {{alias}}( NaN )
    NaN

    See Also
    --------

