159</span>&#160;<span class="comment">                class_type&amp; operator*= (T const &amp; x);</span></div>
<div class="line"><a name="l00160"></a><span class="lineno">  160</span>&#160;<span class="comment">                class_type&amp; operator*= (class_type const &amp; x);</span></div>
<div class="line"><a name="l00161"></a><span class="lineno">  161</span>&#160;<span class="comment">                class_type&amp; operator/= (T const &amp; x);</span></div>
<div class="line"><a name="l00162"></a><