mirror of
https://github.com/bolero-MURAKAMI/Sprout.git
synced 2024-11-29 01:03:45 +00:00
229 lines
10 KiB
C++
229 lines
10 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_FIXED_EXCLUSIVE_SCAN_HPP
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#define SPROUT_NUMERIC_FIXED_EXCLUSIVE_SCAN_HPP
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#include <sprout/config.hpp>
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#include <sprout/container/traits.hpp>
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#include <sprout/container/functions.hpp>
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#include <sprout/iterator/type_traits/is_iterator_of.hpp>
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#include <sprout/type_traits/enabler_if.hpp>
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#include <sprout/algorithm/fixed/results.hpp>
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#include <sprout/pit/pit.hpp>
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#include <sprout/detail/container_complate.hpp>
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namespace sprout {
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namespace fixed {
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namespace detail {
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template<typename InputIterator, typename Result, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == sizeof...(Args) + 1,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl_1(
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InputIterator const&, InputIterator const&, Result const& result,
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typename sprout::container_traits<Result>::size_type,
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typename sprout::container_traits<Result>::value_type const& value,
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typename sprout::container_traits<Result>::value_type const& temp,
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Args const&... args
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)
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{
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return sprout::remake<Result>(result, sprout::size(result), args..., value);
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}
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template<typename InputIterator, typename Result, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size != sizeof...(Args) + 1,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl_1(
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InputIterator const& first, InputIterator const& last, Result const& result,
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typename sprout::container_traits<Result>::size_type size,
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typename sprout::container_traits<Result>::value_type const& value,
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typename sprout::container_traits<Result>::value_type const& temp,
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Args const&... args
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)
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{
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return first != last && sizeof...(Args) + 1 < size
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? exclusive_scan_impl_1(sprout::next(first), last, result, size, value + temp, *first, args..., value)
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: sprout::detail::container_complate(result, args..., value)
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;
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}
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template<typename InputIterator, typename Result, typename T>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == 0,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl(
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InputIterator, InputIterator, Result const& result, T,
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typename sprout::container_traits<Result>::size_type
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)
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{
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return sprout::detail::container_complate(result);
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}
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template<typename InputIterator, typename Result, typename T>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == 1,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl(
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InputIterator, InputIterator, Result const& result, T init,
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typename sprout::container_traits<Result>::size_type
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)
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{
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return sprout::detail::container_complate(result, init);
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}
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template<typename InputIterator, typename Result, typename T>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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(sprout::container_traits<Result>::static_size > 1),
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl(
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InputIterator const& first, InputIterator const& last, Result const& result, T init,
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typename sprout::container_traits<Result>::size_type size
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)
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{
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return first != last
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? exclusive_scan_impl_1(sprout::next(first), last, result, size, init, *first)
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: sprout::detail::container_complate(result, init)
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;
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}
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} // namespace detail
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//
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// exclusive_scan
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//
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template<typename InputIterator, typename Result, typename T>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, Result const& result, T init) {
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return sprout::fixed::detail::exclusive_scan_impl(first, last, result, init, sprout::size(result));
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}
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template<typename Result, typename InputIterator, typename T>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, T init) {
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return sprout::fixed::exclusive_scan<Result>(first, last, sprout::pit<Result>(), init);
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}
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namespace detail {
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template<typename InputIterator, typename Result, typename BinaryOperation, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == sizeof...(Args) + 1,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl_1(
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InputIterator const&, InputIterator const&, Result const& result, BinaryOperation,
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typename sprout::container_traits<Result>::size_type,
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typename sprout::container_traits<Result>::value_type const& value,
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typename sprout::container_traits<Result>::value_type const& temp,
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Args const&... args
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)
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{
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return sprout::remake<Result>(result, sprout::size(result), args..., value);
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}
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template<typename InputIterator, typename Result, typename BinaryOperation, typename... Args>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size != sizeof...(Args) + 1,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl_1(
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InputIterator const& first, InputIterator const& last, Result const& result, BinaryOperation binary_op,
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typename sprout::container_traits<Result>::size_type size,
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typename sprout::container_traits<Result>::value_type const& value,
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typename sprout::container_traits<Result>::value_type const& temp,
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Args const&... args
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)
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{
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return first != last && sizeof...(Args) + 1 < size
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? exclusive_scan_impl_1(sprout::next(first), last, result, binary_op, size, binary_op(value, temp), *first, args..., value)
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: sprout::detail::container_complate(result, args..., value)
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;
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}
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template<typename InputIterator, typename Result, typename T, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == 0,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl(
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InputIterator, InputIterator, Result const& result, T, BinaryOperation,
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typename sprout::container_traits<Result>::size_type
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)
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{
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return sprout::detail::container_complate(result);
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}
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template<typename InputIterator, typename Result, typename T, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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sprout::container_traits<Result>::static_size == 1,
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl(
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InputIterator, InputIterator, Result const& result, T init, BinaryOperation,
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typename sprout::container_traits<Result>::size_type
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)
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{
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return sprout::detail::container_complate(result, init);
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}
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template<typename InputIterator, typename Result, typename T, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename std::enable_if<
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(sprout::container_traits<Result>::static_size > 1),
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typename sprout::fixed::results::algorithm<Result>::type
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>::type
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exclusive_scan_impl(
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InputIterator const& first, InputIterator const& last, Result const& result, T init, BinaryOperation binary_op,
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typename sprout::container_traits<Result>::size_type size
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)
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{
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return first != last
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? exclusive_scan_impl_1(sprout::next(first), last, result, binary_op, size, init, *first)
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: sprout::detail::container_complate(result, init)
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;
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}
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} // namespace detail
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//
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// exclusive_scan
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//
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template<typename InputIterator, typename Result, typename T, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, Result const& result, T init, BinaryOperation binary_op) {
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return sprout::fixed::detail::exclusive_scan_impl(first, last, result, init, binary_op, sprout::size(result));
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}
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template<typename Result, typename InputIterator, typename T, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, T init, BinaryOperation binary_op) {
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return sprout::fixed::exclusive_scan(first, last, sprout::pit<Result>(), init, binary_op);
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}
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} // namespace fixed
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template<
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typename InputIterator, typename Result, typename T,
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typename sprout::enabler_if<!sprout::is_iterator_outputable<Result>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, Result const& result, T init) {
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return sprout::fixed::exclusive_scan(first, last, result, init);
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}
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template<typename Result, typename InputIterator, typename T>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, T init) {
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return sprout::fixed::exclusive_scan<Result>(first, last, init);
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}
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template<
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typename InputIterator, typename Result, typename T, typename BinaryOperation,
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typename sprout::enabler_if<!sprout::is_iterator_outputable<Result>::value>::type = sprout::enabler
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>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, Result const& result, T init, BinaryOperation binary_op) {
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return sprout::fixed::exclusive_scan(first, last, result, init, binary_op);
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}
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template<typename Result, typename InputIterator, typename T, typename BinaryOperation>
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inline SPROUT_CONSTEXPR typename sprout::fixed::results::algorithm<Result>::type
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exclusive_scan(InputIterator first, InputIterator last, T init, BinaryOperation binary_op) {
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return sprout::fixed::exclusive_scan<Result>(first, last, init, binary_op);
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}
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} // namespace sprout
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#endif // #ifndef SPROUT_NUMERIC_FIXED_EXCLUSIVE_SCAN_HPP
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