derek.holloway
7502bf64a4
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69 lines
2.6 KiB
C++
69 lines
2.6 KiB
C++
/*
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* Copyright 2008-2013 NVIDIA Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#pragma once
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#include <thrust/detail/config.h>
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#include <thrust/detail/type_deduction.h>
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#include <thrust/type_traits/integer_sequence.h>
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#include <tuple>
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THRUST_NAMESPACE_BEGIN
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template <typename Tuple, std::size_t... Is>
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auto tuple_subset(Tuple&& t, index_sequence<Is...>)
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THRUST_DECLTYPE_RETURNS(std::make_tuple(std::get<Is>(THRUST_FWD(t))...));
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namespace detail
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{
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template <typename Tuple, typename F, std::size_t... Is>
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void tuple_for_each_impl(Tuple&& t, F&& f, index_sequence<Is...>)
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{
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auto l = {(f(std::get<Is>(t)), 0)...};
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THRUST_UNUSED_VAR(l);
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}
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template <typename Tuple, typename F, std::size_t... Is>
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auto tuple_transform_impl(Tuple&& t, F&& f, index_sequence<Is...>)
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THRUST_DECLTYPE_RETURNS(std::make_tuple(f(std::get<Is>(t))...));
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} // namespace detail
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template <typename... Ts, typename F>
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auto tuple_for_each(std::tuple<Ts...>& t, F&& f)
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THRUST_DECLTYPE_RETURNS(detail::tuple_for_each_impl(t, THRUST_FWD(f), make_index_sequence<sizeof...(Ts)>{}));
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template <typename... Ts, typename F>
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auto tuple_for_each(std::tuple<Ts...> const& t, F&& f)
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THRUST_DECLTYPE_RETURNS(detail::tuple_for_each_impl(t, THRUST_FWD(f), make_index_sequence<sizeof...(Ts)>{}));
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template <typename... Ts, typename F>
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auto tuple_for_each(std::tuple<Ts...>&& t, F&& f) THRUST_DECLTYPE_RETURNS(
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detail::tuple_for_each_impl(std::move(t), THRUST_FWD(f), make_index_sequence<sizeof...(Ts)>{}));
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template <typename... Ts, typename F>
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auto tuple_transform(std::tuple<Ts...>& t, F&& f)
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THRUST_DECLTYPE_RETURNS(detail::tuple_transform_impl(t, THRUST_FWD(f), make_index_sequence<sizeof...(Ts)>{}));
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template <typename... Ts, typename F>
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auto tuple_transform(std::tuple<Ts...> const& t, F&& f)
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THRUST_DECLTYPE_RETURNS(detail::tuple_transform_impl(t, THRUST_FWD(f), make_index_sequence<sizeof...(Ts)>{}));
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template <typename... Ts, typename F>
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auto tuple_transform(std::tuple<Ts...>&& t, F&& f) THRUST_DECLTYPE_RETURNS(
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detail::tuple_transform_impl(std::move(t), THRUST_FWD(f), make_index_sequence<sizeof...(Ts)>{}));
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THRUST_NAMESPACE_END
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