{{alias}}( x )
    Evaluates the Dirac delta function.

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

    Returns
    -------
    y: number
        Function value.

    Examples
    --------
    > var y = {{alias}}( 3.14 )
    0.0
    > y = {{alias}}( 0.0 )
    Infinity

    See Also
    --------