  129</span>&#160;<span class="comment">                class_type&amp; operator-= (class_type const &amp; x);</span></div>
<div class="line"><a name="l00130"></a><span class="lineno">  130</span>&#160;<span class="comment">                class_type&amp; operator*= (T const &amp; x);</span></div>
<div class="line"><a name="l00131"></a><span class="lineno">  131</span>&#160;<span class="comment">                class_type&amp; operator*= (class_type const &amp; x);</span></div>
<div class="line"><a name="l0