/div>
<br>
<span id="6_Comparisonsandtests"><h6>Comparisons and tests</h6></span><br>
<pre><span id="VALsign_big_int"><span class="keyword">val</span> sign_big_int</span> : <code class="type"><a href="Big_int.html#TYPEbig_int">big_int</a> -&gt; int</code></pre><div class="info">
Return <code class="code">0</code> if the given big integer is zero,
           <code class="code">1</code> if it is positive, and <code class="code">-1</code> if it is negative.<br>
</div>
<pre><span id="VALcompare_big_int"><span c