new normalized time value.</p></dd></dl><dl><dt class="spec value" id="val-add_sec"><a href="#val-add_sec" class="anchor"></a><code><span class="keyword">val</span> add_sec : int64 <span>&#45;&gt;</span> <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dd><p><code>add_sec s t</code> adds <code>s</code> seconds to <code>t</code>.</p></dd></dl><dl><dt class="spec value" id="val-add_nsec"><a href="#val-add_nsec" class="anchor"></a><code><span class="keyword