71 lines
2.4 KiB
Plaintext
71 lines
2.4 KiB
Plaintext
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//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://boostorg.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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#ifndef BOOST_COMPUTE_ALGORITHM_MINMAX_ELEMENT_HPP
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#define BOOST_COMPUTE_ALGORITHM_MINMAX_ELEMENT_HPP
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#include <utility>
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#include <boost/compute/system.hpp>
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#include <boost/compute/command_queue.hpp>
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#include <boost/compute/algorithm/max_element.hpp>
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#include <boost/compute/algorithm/min_element.hpp>
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namespace boost {
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namespace compute {
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/// Returns a pair of iterators with the first pointing to the minimum
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/// element and the second pointing to the maximum element in the range
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/// [\p first, \p last).
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///
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/// \param first first element in the input range
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/// \param last last element in the input range
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/// \param compare comparison function object which returns true if the first
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/// argument is less than (i.e. is ordered before) the second.
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/// \param queue command queue to perform the operation
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///
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/// \see max_element(), min_element()
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template<class InputIterator, class Compare>
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inline std::pair<InputIterator, InputIterator>
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minmax_element(InputIterator first,
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InputIterator last,
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Compare compare,
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command_queue &queue = system::default_queue())
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{
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if(first == last){
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// empty range
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return std::make_pair(first, first);
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}
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return std::make_pair(min_element(first, last, compare, queue),
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max_element(first, last, compare, queue));
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}
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///\overload
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template<class InputIterator>
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inline std::pair<InputIterator, InputIterator>
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minmax_element(InputIterator first,
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InputIterator last,
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command_queue &queue = system::default_queue())
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{
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if(first == last){
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// empty range
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return std::make_pair(first, first);
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}
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return std::make_pair(min_element(first, last, queue),
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max_element(first, last, queue));
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}
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} // end compute namespace
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} // end boost namespace
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#endif // BOOST_COMPUTE_ALGORITHM_MINMAX_ELEMENT_HPP
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