;</span> unit</code></dt><dt class="spec value" id="val-to_float_up"><a href="#val-to_float_up" class="anchor"></a><code><span class="keyword">val</span> to_float_up : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> float</code></dt><dt class="spec value" id="val-to_float_down"><a href="#val-to_float_down" class="anchor"></a><code><span class="keyword">val</span> to_float_down : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> float</code></dt><dt class="spec value" id="val-to_rat"><a href=