Boost C++ Libraries

namespace boost {
  namespace sort {
    namespace spreadsort {
      template<typename RandomAccessIter> 
        void integer_sort(RandomAccessIter, RandomAccessIter);
      template<typename RandomAccessIter, typename Right_shift, 
               typename Compare> 
        void integer_sort(RandomAccessIter, RandomAccessIter, Right_shift, 
                          Compare);
      template<typename RandomAccessIter, typename Right_shift> 
        void integer_sort(RandomAccessIter, RandomAccessIter, Right_shift);
    }
  }
}