  87</span>&#160;<span class="keyword"></span>{</div>
<div class="line"><a name="l00088"></a><span class="lineno">   88</span>&#160;    <span class="keywordflow">return</span> (std::sqrt(<span class="keywordtype">double</span>((x_-pt.<a class="code" href="classnubot_1_1DPoint__.html#a331b9929a84f05c009479ec70b88be37">x_</a>)*(x_-pt.<a class="code" href="classnubot_1_1DPoint__.html#a331b9929a84f05c009479ec70b88be37">x_</a>)+(y_-pt.<a class="code" href="classnubot_1_1DPoint__.html#af48f202ad9774bb7bb51ffe0e99