f="index.html#type-t">t</a></code></dt><dd><p><code>add t1 t2</code> adds the two timespec values, returning a normalized value</p></dd></dl><dl><dt class="spec value" id="val-sub"><a href="#val-sub" class="anchor"></a><code><span class="keyword">val</span> sub : <a href="index.html#type-t">t</a> <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>sub t1 t2</code> subtracts <code>t2</code> from <code>t1</code>, creating a 