on2.svg"></span>
      </p>
<p>
        and those with a "_b" suffix evaluate the fraction:
      </p>
<p>
        <span class="inlinemediaobject"><img src="../../../equations/fraction1.svg"></span>
      </p>
<p>
        This latter form is somewhat more natural in that it corresponds with the
        usual definition of a continued fraction, but note that the first <span class="emphasis"><em>a</em></span>
        value returned by the generator is discarded. Further, often the first <span class="emphasis"