Boost C++ Libraries of the most highly regarded and expertly designed C++ library projects in the world. Herb Sutter and Andrei Alexandrescu, C++ Coding Standards


// Copyright (c) 2013 Kyle Lutz <>
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// See for more information.


#include <utility>

#include <boost/static_assert.hpp>

#include <boost/compute/system.hpp>
#include <boost/compute/command_queue.hpp>
#include <boost/compute/algorithm/lower_bound.hpp>
#include <boost/compute/algorithm/upper_bound.hpp>
#include <boost/compute/type_traits/is_device_iterator.hpp>

namespace boost {
namespace compute {

/// Returns a pair of iterators containing the range of values equal
/// to \p value in the sorted range [\p first, \p last).
/// Space complexity: \Omega(1)
template<class InputIterator, class T>
inline std::pair<InputIterator, InputIterator>
equal_range(InputIterator first,
            InputIterator last,
            const T &value,
            command_queue &queue = system::default_queue())
    return std::make_pair(
               ::boost::compute::lower_bound(first, last, value, queue),
               ::boost::compute::upper_bound(first, last, value, queue)

} // end compute namespace
} // end boost namespace