">t</a> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-is_zero"><a href="#val-is_zero" class="anchor"></a><code><span class="keyword">val</span> is_zero : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-is_one"><a href="#val-is_one" class="anchor"></a><code><span class="keyword">val</span> is_one : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-of_non_negative_bound"><a hre