e from <code>int</code> to <code>real</code> and a second from <code>real</code> to <code>complex</code>. Consider the following functions with <code>real</code> and <code>complex</code> signatures</p>
<div class="sourceCode" id="cb7"><pre class="sourceCode stan code-with-copy"><code class="sourceCode stan"><span id="cb7-1"><a href="#cb7-1" aria-hidden="true" tabindex="-1"></a><span class="dt">real</span> bar(<span class="dt">real</span> x);</span>
<span id="cb7-2"><a href="#cb7-2" aria-hidden="true" tabind