lass="special">&gt;</span> <span class="special">&amp;</span><span class="special">)</span><span class="special">;</span>
  <a class="link" href="mean.html" title="Class template mean">mean</a> <span class="special">&amp;</span> <a class="link" href="mean.html#idm45106001780544-bb"><span class="keyword">operator</span> <span class="special">*=</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">RealType</span> <span class="special">&amp;</span><span class="spe