#type-t">t</a> <span>&#45;&gt;</span> bool</code></dt><dd><p>Do an and of all the bits in the bitvector</p></dd></dl><dl><dt class="spec value" id="val-shift_left"><a href="#val-shift_left" class="anchor"></a><code><span class="keyword">val</span> shift_left : <a href="index.html#type-t">t</a> <span>&#45;&gt;</span> int <span>&#45;&gt;</span> <a href="index.html#type-t">t</a></code></dt><dd><p>Do a left shift. The second argument must be non-negative</p></dd></dl><dl><dt class="spec value" id="val-shift_lef