;&gt;</span> <a href="index.html#type-coeff">coeff</a></code></dt><dt class="spec value" id="val-monom_to_constant_opt"><a href="#val-monom_to_constant_opt" class="anchor"></a><code><span class="keyword">val</span> monom_to_constant_opt : <a href="index.html#type-cell">cell</a> <span>&#45;&gt;</span> <span><a href="index.html#type-coeff">coeff</a> option</span></code></dt><dt class="spec value" id="val-to_constant_opt"><a href="#val-to_constant_opt" class="anchor"></a><code><span class="keyword">val</span> 