ass="spec value" id="val-update_inst" class="anchored"><a href="#val-update_inst" class="anchor"></a><code><span><span class="keyword">val</span> update_inst : <span><a href="#type-inst">inst</a> <span class="arrow">&#45;&gt;</span></span> <span><a href="#type-inst">inst</a> <span class="arrow">&#45;&gt;</span></span> <a href="#type-inst">inst</a></span></code></div><div class="spec-doc"><p>Update <code>inst_old</code> to <code>inst_new</code> preserving the zero flag</p></div></div><div class="odoc-spec"><