em</span><span class="mdzsyn-operator">)</span><span class="mdzsyn-operator">;</span></code></pre><h2 id="Example">Example
</h2>
<pre class="mendoza-codeblock"><code data-language="c"><span class="mdzsyn-comment">/* Set a value in an array with an index that wraps around */</span>
<span class="mdzsyn-keyword">static</span> <span class="mdzsyn-identifier">Janet</span> <span class="mdzsyn-identifier">cfun_array_ringset</span><span class="mdzsyn-operator">(</span><span class="mdzsyn-type">int32_t</span> <span 