an> (x*with.x)+(y*with.y);</div>
<div class="line"><a name="l00163"></a><span class="lineno">  163</span>&#160;    }</div>
<div class="line"><a name="l00164"></a><span class="lineno">  164</span>&#160;    <span class="keyword">inline</span> <span class="keywordtype">float</span> Length()<span class="keyword"> const </span>{</div>
<div class="line"><a name="l00165"></a><span class="lineno">  165</span>&#160;        <span class="keywordflow">return</span> sqrt(x*x+y*y);</div>
<div class="line"><a name="l00166