s="identifier">i</span></code>. If <code class="computeroutput"><span class="identifier">i</span></code>
          is a <a class="link" href="../concepts/bidirectional_iterator.html" title="Bidirectional Iterator">Bidirectional
          Iterator</a> then <code class="computeroutput"><span class="identifier">N</span></code>
          may be negative.
        </p>
<h6>
<a name="fusion.iterator.functions.advance_c.h3"></a>
          <span><a name="fusion.iterator.functions.advance_c.header"></a></span><a clas