stics, Stan uses <em>Welford’s algorithm</em> for computing variances.
This avoids catastrophic cancellation and may also be carried out in a
single pass.</p>
</div>
<div id="overflow" class="section level3">
<h3><span class="header-section-number">15.3.5</span> Overflow</h3>
<p>Even though <code>1e200</code> may be represented as a double precision floating
point value, there is no finite value large enough to represent <code>1e200 * 1e200</code>. The result of <code>1e200 * 1e200</code> is said to <em>o