>inf</span> <span class="special">==</span> <span class="identifier">r</span><span class="special">);</span> <span class="comment">// Confirms that the double values really are identical.</span>

<span class="identifier">cout</span> <span class="special">&lt;&lt;</span> <span class="string">"infinity output was "</span> <span class="special">&lt;&lt;</span> <span class="identifier">ss</span><span class="special">.</span><span class="identifier">str</span><span class="special">()</span> <span class="special"