abs(x) using the
                    above formula. Note that to factor in the location and scale
                    parameters you must substitute (x - x<sub>0 </sub>) / γ for x in the above.
                  </p>
                  <p>
                    This procedure yields the smaller of <span class="emphasis"><em>p</em></span> and
                    <span class="emphasis"><em>q</em></span>, so the result may need subtracting from
                    1 depending on whether we want the complement or