dering between janet values.  The <code class="mendoza-code">compare</code> function
compares two values (here called <code class="mendoza-code">a</code> and <code class="mendoza-code">b</code>), and returns -1, 0, or
1 for <code class="mendoza-code">a &lt; b</code>, <code class="mendoza-code">a = b</code>, <code class="mendoza-code">a &gt; b</code> respectively.  This result is
used by the comparison operator, like <code class="mendoza-code">compare&lt;</code>, to return false or true.
(The comparison oper