        float_distance</a>.
          </li>
</ul></div>
<p>
        There is none the less, one important use case for this function:
      </p>
<p>
        If it is known that the true result of some function is x<sub>t</sub> and the calculated
        result is x<sub>c</sub>, then the error measured in ulp is simply <code class="literal">fabs(x<sub>t</sub> -
        x<sub>c</sub>) / ulp(x<sub>t</sub>)</code>.
      </p>
</div>
<table xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" width