pan class="bold"><strong>roundoff</strong></span>
        error of the representation is the abstract difference: <code class="computeroutput"><span class="special">(</span><span class="identifier">abt</span><span class="special">(</span><span class="identifier">v</span><span class="special">)-</span><span class="identifier">V</span><span class="special">)</span></code>.
      </p>
<p>
        Notice that a representation is an <span class="emphasis"><em>operation</em></span>, hence,
        the roundoff er