mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
43 lines
1.5 KiB
C++
43 lines
1.5 KiB
C++
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/*=============================================================================
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Copyright (c) 2011-2017 Bolero MURAKAMI
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https://github.com/bolero-MURAKAMI/Sprout
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Distributed under the Boost Software License, Version 1.0. (See accompanying
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file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt)
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=============================================================================*/
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#ifndef SPROUT_NUMERIC_REDUCE_HPP
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#define SPROUT_NUMERIC_REDUCE_HPP
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#include <iterator>
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#include <sprout/config.hpp>
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#include <sprout/container/functions.hpp>
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#include <sprout/numeric/accumulate.hpp>
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namespace sprout {
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//
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// reduce
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//
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// recursion depth:
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// O(log N)
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//
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template<typename InputIterator>
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inline SPROUT_CONSTEXPR typename std::iterator_traits<InputIterator>::value_type
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reduce(InputIterator first, InputIterator last) {
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return sprout::accumulate(first, last, typename std::iterator_traits<InputIterator>::value_type());
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}
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template<typename InputIterator, typename T>
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inline SPROUT_CONSTEXPR T
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reduce(InputIterator first, InputIterator last, T init) {
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return sprout::accumulate(first, last, init);
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}
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template<typename InputIterator, typename T, typename BinaryOperation>
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inline SPROUT_CONSTEXPR T
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reduce(InputIterator first, InputIterator last, T init, BinaryOperation binary_op) {
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return sprout::accumulate(first, last, init, binary_op);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_NUMERIC_REDUCE_HPP
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