title: Is there a C++ implementation for vEB Trees?
body: <p>Is there a reliable C++ implementation of <a href="http://en.wikipedia.org/wiki/Van_Emde_Boas_tree" rel="noreferrer">vEB Trees</a>?</p>
  
  <p><a href="http://www.boost.org/" rel="noreferrer">Boost</a> doesn't have it. It seems quite unusual.</p>
  
  <p>Are there any (maybe commercial) libraries for vEB Trees or y-fast tries or similar data structures?</p>