val</span> pred_num</span> : <code class="type"><a href="Num.html#TYPEnum">num</a> -&gt; <a href="Num.html#TYPEnum">num</a></code></pre><div class="info ">
<code class="code">pred n</code> is <code class="code">n-1</code><br>
</div>

<pre><span id="VALincr_num"><span class="keyword">val</span> incr_num</span> : <code class="type"><a href="Num.html#TYPEnum">num</a> <a href="Pervasives.html#TYPEref">ref</a> -&gt; unit</code></pre><div class="info ">
<code class="code">incr r</code> is <code class="code">r:=!r