><span class="keyword">val</span> hull : <a href="E/B/index.html#type-t">B.t</a> <span>&#45;&gt;</span> <a href="E/B/index.html#type-t">B.t</a> <span>&#45;&gt;</span> <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-half_sup"><a href="#val-half_sup" class="anchor"></a><code><span class="keyword">val</span> half_sup : <a href="E/B/index.html#type-t">B.t</a> <span>&#45;&gt;</span> <a href="index.html#type-real_b