mirror of
https://github.com/bolero-MURAKAMI/Sprout
synced 2024-11-12 21:09:01 +00:00
247 lines
9.8 KiB
C++
247 lines
9.8 KiB
C++
#ifndef SPROUT_NUMERIC_FIXED_PARTIAL_SUM_HPP
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#define SPROUT_NUMERIC_FIXED_PARTIAL_SUM_HPP
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#include <type_traits>
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#include <sprout/config.hpp>
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#include <sprout/fixed_container/traits.hpp>
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#include <sprout/fixed_container/functions.hpp>
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#include <sprout/iterator/operation.hpp>
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#include <sprout/algorithm/fixed/result_of.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 Result, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_3(
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Result const& result,
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Args const&... args
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)
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{
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return sprout::remake_clone<Result>(result, sprout::size(result), args...);
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}
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template<typename Result, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_3(
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Result const& result,
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Args const&... args
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)
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{
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return partial_sum_impl_3(result, args..., *sprout::next(sprout::fixed_begin(result), sizeof...(Args)));
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}
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template<typename InputIterator, typename Result, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_2(
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InputIterator first,
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InputIterator last,
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Result const& result,
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typename sprout::fixed_container_traits<Result>::value_type const& value,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return sprout::remake_clone<Result>(result, sprout::size(result), args...);
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}
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template<typename InputIterator, typename Result, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_2(
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InputIterator first,
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InputIterator last,
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Result const& result,
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typename sprout::fixed_container_traits<Result>::value_type const& value,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return first != last && sizeof...(Args) < static_cast<std::size_t>(offset)
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? partial_sum_impl_2(sprout::next(first), last, result, value + *first, offset, args..., value)
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: partial_sum_impl_3(result, args..., value)
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;
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}
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template<typename InputIterator, typename Result, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_1(
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InputIterator first,
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InputIterator last,
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Result const& result,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return sprout::remake_clone<Result>(result, sprout::size(result), args...);
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}
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template<typename InputIterator, typename Result, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_1(
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InputIterator first,
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InputIterator last,
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Result const& result,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return sizeof...(Args) < static_cast<std::size_t>(offset)
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? partial_sum_impl_1(first, last, result, offset, args..., *sprout::next(sprout::fixed_begin(result), sizeof...(Args)))
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: first != last
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? partial_sum_impl_2(sprout::next(first), last, result, *first, offset + sprout::size(result), args...)
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: partial_sum_impl_3(result, args...)
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;
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}
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template<typename InputIterator, typename Result>
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SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::algorithm<Result>::type partial_sum_impl(
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InputIterator first,
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InputIterator last,
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Result const& result
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)
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{
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return partial_sum_impl_1(first, last, result, sprout::fixed_begin_offset(result));
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}
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} // namespace detail
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//
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// partial_sum
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//
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template<typename InputIterator, typename Result>
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SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::algorithm<Result>::type partial_sum(
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InputIterator first,
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InputIterator last,
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Result const& result
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)
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{
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return sprout::fixed::detail::partial_sum_impl(first, last, result);
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}
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namespace detail {
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template<typename Result, typename BinaryOperation, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_3(
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Result const& result,
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Args const&... args
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)
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{
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return sprout::remake_clone<Result>(result, sprout::size(result), args...);
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}
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template<typename Result, typename BinaryOperation, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_3(
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Result const& result,
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Args const&... args
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)
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{
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return partial_sum_impl_3(result, args..., *sprout::next(sprout::fixed_begin(result), sizeof...(Args)));
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}
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template<typename InputIterator, typename Result, typename BinaryOperation, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_2(
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InputIterator first,
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InputIterator last,
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Result const& result,
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BinaryOperation binary_op,
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typename sprout::fixed_container_traits<Result>::value_type const& value,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return sprout::remake_clone<Result>(result, sprout::size(result), args...);
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}
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template<typename InputIterator, typename Result, typename BinaryOperation, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_2(
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InputIterator first,
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InputIterator last,
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Result const& result,
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BinaryOperation binary_op,
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typename sprout::fixed_container_traits<Result>::value_type const& value,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return first != last && sizeof...(Args) < static_cast<std::size_t>(offset)
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? partial_sum_impl_2(sprout::next(first), last, result, binary_op, binary_op(value, *first), offset, args..., value)
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: partial_sum_impl_3(result, args..., value)
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;
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}
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template<typename InputIterator, typename Result, typename BinaryOperation, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size == sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_1(
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InputIterator first,
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InputIterator last,
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Result const& result,
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BinaryOperation binary_op,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return sprout::remake_clone<Result>(result, sprout::size(result), args...);
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}
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template<typename InputIterator, typename Result, typename BinaryOperation, typename... Args>
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SPROUT_CONSTEXPR inline typename std::enable_if<
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sprout::fixed_container_traits<Result>::fixed_size != sizeof...(Args),
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typename sprout::fixed::result_of::algorithm<Result>::type
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>::type partial_sum_impl_1(
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InputIterator first,
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InputIterator last,
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Result const& result,
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BinaryOperation binary_op,
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typename sprout::fixed_container_traits<Result>::difference_type offset,
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Args const&... args
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)
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{
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return sizeof...(Args) < static_cast<std::size_t>(offset)
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? partial_sum_impl_1(first, last, result, binary_op, offset, args..., *sprout::next(sprout::fixed_begin(result), sizeof...(Args)))
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: first != last
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? partial_sum_impl_2(sprout::next(first), last, result, binary_op, *first, offset + sprout::size(result), args...)
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: partial_sum_impl_3(result, args...)
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;
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}
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template<typename InputIterator, typename Result, typename BinaryOperation>
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SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::algorithm<Result>::type partial_sum_impl(
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InputIterator first,
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InputIterator last,
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Result const& result,
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BinaryOperation binary_op
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)
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{
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return partial_sum_impl_1(first, last, result, binary_op, sprout::fixed_begin_offset(result));
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}
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} // namespace detail
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//
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// partial_sum
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//
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template<typename InputIterator, typename Result, typename BinaryOperation>
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SPROUT_CONSTEXPR inline typename sprout::fixed::result_of::algorithm<Result>::type partial_sum(
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InputIterator first,
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InputIterator last,
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Result const& result,
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BinaryOperation binary_op
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)
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{
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return sprout::fixed::detail::partial_sum_impl(first, last, result, binary_op);
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}
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} // namespace fixed
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using sprout::fixed::partial_sum;
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} // namespace sprout
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#endif // #ifndef SPROUT_NUMERIC_FIXED_PARTIAL_SUM_HPP
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