ceph/src/boost/boost/compute/algorithm/equal_range.hpp

   1 //---------------------------------------------------------------------------//
   2 // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
   3 //
   4 // Distributed under the Boost Software License, Version 1.0
   5 // See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt
   7 //
   8 // See http://boostorg.github.com/compute for more information.
   9 //---------------------------------------------------------------------------//
  10
  11 #ifndef BOOST_COMPUTE_ALGORITHM_EQUAL_RANGE_HPP
  12 #define BOOST_COMPUTE_ALGORITHM_EQUAL_RANGE_HPP
  13
  14 #include <utility>
  15
  16 #include <boost/compute/system.hpp>
  17 #include <boost/compute/command_queue.hpp>
  18 #include <boost/compute/algorithm/lower_bound.hpp>
  19 #include <boost/compute/algorithm/upper_bound.hpp>
  20
  21 namespace boost {
  22 namespace compute {
  23
  24 /// Returns a pair of iterators containing the range of values equal
  25 /// to \p value in the sorted range [\p first, \p last).
  26 ///
  27 /// Space complexity: \Omega(1)
  28 template<class InputIterator, class T>
  29 inline std::pair<InputIterator, InputIterator>
  30 equal_range(InputIterator first,
  31             InputIterator last,
  32             const T &value,
  33             command_queue &queue = system::default_queue())
  34 {
  35     return std::make_pair(
  36                ::boost::compute::lower_bound(first, last, value, queue),
  37                ::boost::compute::upper_bound(first, last, value, queue)
  38            );
  39 }
  40
  41 } // end compute namespace
  42 } // end boost namespace
  43
  44 #endif // BOOST_COMPUTE_ALGORITHM_EQUAL_RANGE_HPP