v_sgn"><a href="#val-div_sgn" class="anchor"></a><code><span class="keyword">val</span> div_sgn : <span>(<a href="index.html#type-real_bound">real_bound</a> * <a href="index.html#type-real_bound">real_bound</a>)</span> <span>&#45;&gt;</span> <span>(<a href="index.html#type-real_bound">real_bound</a> * <a href="index.html#type-real_bound">real_bound</a>)</span> <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