dem.html#a139321f45979f79c80f456258a9e1598">Vec2d</a> = std::array&lt;double, 2&gt;;</div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"><a class="line" href="namespacenetdem.html#a510a89239abc51ed4d8d88ce7ee403df">   18</a></span><span class="keyword">using </span><a class="code hl_typedef" href="namespacenetdem.html#a510a89239abc51ed4d8d88ce7ee403df">Vec3d</a> = std::array&lt;double, 3&gt;;</div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"><a class="li