te; may also return Sat or Unsat if all (resp. no) point can satisfy the predicate. Interface is simplified since a &gt; b &lt;=&gt; b &lt; a</p></dd></dl><dl><dt class="spec value" id="val-filter_lt"><a href="#val-filter_lt" class="anchor"></a><code><span class="keyword">val</span> filter_lt : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <span><span>(<a href="index.html#type-t">t</a> * <a href="index.html#type-t">t</a>)</span> <a href="..