 signature <em>only</em> differs by the
return type.</p>
<p>For example, the following is not permitted</p>
<div class="sourceCode" id="cb210"><pre class="sourceCode stan"><code class="sourceCode stan"><span id="cb210-1"><a href="function-names.html#cb210-1" aria-hidden="true" tabindex="-1"></a><span class="co">// illegal</span></span>
<span id="cb210-2"><a href="function-names.html#cb210-2" aria-hidden="true" tabindex="-1"></a><span class="dt">real</span> baz(<span class="dt">int</span> x);</span>
<span id