rd">typename</span> S<span class="special">&gt;</span> 
      <span class="keyword">auto</span> <a name="boost.histogram.operator_idm45105994377952"></a><span class="keyword">operator</span><span class="special">*</span><span class="special">(</span><span class="keyword">const</span> <a class="link" href="../boost/histogram/histogram.html" title="Class template histogram">histogram</a><span class="special">&lt;</span> <span class="identifier">A</span><span class="special">,</span> <span class="identifier">S