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algorithm
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/usr/include/boost/compute/algorithm
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accumulate.hpp
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adjacent_difference.hpp
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adjacent_find.hpp
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inclusive_scan.hpp
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inner_product.hpp
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minmax_element.hpp
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min_element.hpp
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next_permutation.hpp
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nth_element.hpp
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partial_sum.hpp
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partition.hpp
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prev_permutation.hpp
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reduce.hpp
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search.hpp
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set_difference.hpp
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transform.hpp
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/usr/include/boost/compute/algorithm/inclusive_scan.hpp
(3402B)
//---------------------------------------------------------------------------// // Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com> // // Distributed under the Boost Software License, Version 1.0 // See accompanying file LICENSE_1_0.txt or copy at // http://www.boost.org/LICENSE_1_0.txt // // See http://boostorg.github.com/compute for more information. //---------------------------------------------------------------------------// #ifndef BOOST_COMPUTE_ALGORITHM_INCLUSIVE_SCAN_HPP #define BOOST_COMPUTE_ALGORITHM_INCLUSIVE_SCAN_HPP #include <boost/static_assert.hpp> #include <boost/compute/functional.hpp> #include <boost/compute/system.hpp> #include <boost/compute/command_queue.hpp> #include <boost/compute/algorithm/detail/scan.hpp> #include <boost/compute/type_traits/is_device_iterator.hpp> namespace boost { namespace compute { /// Performs an inclusive scan of the elements in the range [\p first, \p last) /// and stores the results in the range beginning at \p result. /// /// Each element in the output is assigned to the sum of the current value in /// the input with the sum of every previous value in the input. /// /// \param first first element in the range to scan /// \param last last element in the range to scan /// \param result first element in the result range /// \param binary_op associative binary operator /// \param queue command queue to perform the operation /// /// \return \c OutputIterator to the end of the result range /// /// The default operation is to add the elements up. /// /// \snippet test/test_scan.cpp inclusive_scan_int /// /// But different associative operation can be specified as \p binary_op /// instead (e.g., multiplication, maximum, minimum). /// /// \snippet test/test_scan.cpp inclusive_scan_int_multiplies /// /// Space complexity on GPUs: \Omega(n)<br> /// Space complexity on GPUs when \p first == \p result: \Omega(2n)<br> /// Space complexity on CPUs: \Omega(1) /// /// \see exclusive_scan() template<class InputIterator, class OutputIterator, class BinaryOperator> inline OutputIterator inclusive_scan(InputIterator first, InputIterator last, OutputIterator result, BinaryOperator binary_op, command_queue &queue = system::default_queue()) { BOOST_STATIC_ASSERT(is_device_iterator<InputIterator>::value); BOOST_STATIC_ASSERT(is_device_iterator<OutputIterator>::value); typedef typename std::iterator_traits<OutputIterator>::value_type output_type; return detail::scan(first, last, result, false, output_type(0), binary_op, queue); } /// \overload template<class InputIterator, class OutputIterator> inline OutputIterator inclusive_scan(InputIterator first, InputIterator last, OutputIterator result, command_queue &queue = system::default_queue()) { BOOST_STATIC_ASSERT(is_device_iterator<InputIterator>::value); BOOST_STATIC_ASSERT(is_device_iterator<OutputIterator>::value); typedef typename std::iterator_traits<OutputIterator>::value_type output_type; return detail::scan(first, last, result, false, output_type(0), boost::compute::plus<output_type>(), queue); } } // end compute namespace } // end boost namespace #endif // BOOST_COMPUTE_ALGORITHM_INCLUSIVE_SCAN_HPP
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