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https://github.com/bolero-MURAKAMI/Sprout.git
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72 lines
2.5 KiB
C++
72 lines
2.5 KiB
C++
#ifndef SPROUT_ALGORITHM_FIT_NTH_ELEMENT_HPP
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#define SPROUT_ALGORITHM_FIT_NTH_ELEMENT_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/algorithm/fixed/nth_element.hpp>
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#include <sprout/algorithm/fit/result_of.hpp>
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#include <sprout/sub_array.hpp>
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#include HDR_ITERATOR_SSCRISK_CEL_OR_SPROUT
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namespace sprout {
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namespace fit {
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namespace detail {
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template<typename Container, typename Compare>
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inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type nth_element_impl(
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Container const& cont,
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typename sprout::container_traits<Container>::const_iterator nth,
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Compare comp,
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typename sprout::container_traits<Container>::difference_type offset
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)
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{
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return sprout::sub_copy(
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sprout::get_internal(sprout::fixed::nth_element(cont, nth, comp)),
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offset,
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offset + NS_SSCRISK_CEL_OR_SPROUT::distance(sprout::begin(cont), nth) + 1
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);
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}
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} // namespace detail
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//
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// nth_element
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//
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template<typename Container, typename Compare>
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inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type nth_element(
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Container const& cont,
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typename sprout::container_traits<Container>::const_iterator nth,
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Compare comp
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)
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{
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return sprout::fit::detail::nth_element_impl(cont, nth, comp, sprout::internal_begin_offset(cont));
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}
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namespace detail {
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template<typename Container>
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inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type nth_element_impl(
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Container const& cont,
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typename sprout::container_traits<Container>::const_iterator nth,
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typename sprout::container_traits<Container>::difference_type offset
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)
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{
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return sprout::sub_copy(
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sprout::get_internal(sprout::fixed::nth_element(cont, nth)),
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offset,
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offset + NS_SSCRISK_CEL_OR_SPROUT::distance(sprout::begin(cont), nth) + 1
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);
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}
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} // namespace detail
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//
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// nth_element
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//
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template<typename Container>
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inline SPROUT_CONSTEXPR typename sprout::fit::result_of::algorithm<Container>::type nth_element(
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Container const& cont,
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typename sprout::container_traits<Container>::const_iterator nth
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)
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{
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return sprout::fit::detail::nth_element_impl(cont, nth, sprout::internal_begin_offset(cont));
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}
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} // namespace fit
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} // namespace sprout
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#endif // #ifndef SPROUT_ALGORITHM_FIT_NTH_ELEMENT_HPP
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