>increment_log_prob</code>) adding to the accumulator. At the end of the model block execution, the value of the log probability accumulator is the log probability value returned by the Stan program.</p>
<p>Stan provides a special built-in function <code>target()</code> that takes no arguments and returns the current value of the log probability accumulator.<a href="#fn1" class="footnoteRef" id="fnref1"><sup>1</sup></a> This function is primarily useful for debugging purposes, where for instance, it may be 