<a href="index.html#type-real_bound">real_bound</a></code></dt><dt class="spec value" id="val-top"><a href="#val-top" class="anchor"></a><code><span class="keyword">val</span> top : <a href="index.html#type-real_bound">real_bound</a> * <a href="index.html#type-real_bound">real_bound</a></code></dt><dt class="spec value" id="val-zero_one"><a href="#val-zero_one" class="anchor"></a><code><span class="keyword">val</span> zero_one : <a href="index.html#type-real_bound">real_bound</a> * <a href="index.html#type-