pan class="keywordsign">-&gt;</span>&nbsp;int64&nbsp;=&nbsp;<span class="string">"%int64_lsr"</span><br>
&nbsp;&nbsp;<span class="keyword">external</span>&nbsp;of_int&nbsp;:&nbsp;int&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int64&nbsp;=&nbsp;<span class="string">"%int64_of_int"</span><br>
&nbsp;&nbsp;<span class="keyword">external</span>&nbsp;to_int&nbsp;:&nbsp;int64&nbsp;<span class="keywordsign">-&gt;</span>&nbsp;int&nbsp;=&nbsp;<span class="string">"%int64_to_int"</span><br>
&nbsp;&nbsp;<span cla