<span class="identifier">r</span><span class="special">;</span> <span class="comment">// Read back in.</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">inf</span> <span class="special">&lt;&lt;</span> <span class="identifier">endl</span><span class="special">;</span> <span class="comment">// 1.#INF</span>
<span class="identifier">cout</span> <span class="special