pan>&#160;<span class="comment">// This implementation assumes that the size (# of powers) is determined</span></div>
<div class="line"><a name="l00043"></a><span class="lineno">   43</span>&#160;<span class="comment">// at initialization time, it is not hard to grow the std::vector as needed,</span></div>
<div class="line"><a name="l00044"></a><span class="lineno">   44</span>&#160;<span class="comment">// but not clear if there is any application that needs it.</span></div>
<div class="line"><a name="l000