4&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int64&nbsp;=&nbsp;<span class="string">"%int64_mul"</span><br>
&nbsp;&nbsp;<span class="keyword">external</span>&nbsp;div&nbsp;:&nbsp;int64&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int64&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int64&nbsp;=&nbsp;<span class="string">"%int64_div"</span><br>
&nbsp;&nbsp;<span class="keyword">val</span>&nbsp;unsigned_div&nbsp;:&nbsp;int64&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int64&nbsp;<span class="