n> round : float <span>&#45;&gt;</span> <span>float <a href="../index.html#type-meth">meth</a></span></code></dt><dt class="spec method" id="method-sin"><a href="#method-sin" class="anchor"></a><code><span class="keyword">method</span> sin : float <span>&#45;&gt;</span> <span>float <a href="../index.html#type-meth">meth</a></span></code></dt><dt class="spec method" id="method-sqrt"><a href="#method-sqrt" class="anchor"></a><code><span class="keyword">method</span> sqrt : float <span>&#45;&gt;</span> <span>f