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https://github.com/bolero-MURAKAMI/Sprout.git
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55 lines
1.6 KiB
C++
55 lines
1.6 KiB
C++
#ifndef SPROUT_NUMERIC_FIXED_IOTA_HPP
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#define SPROUT_NUMERIC_FIXED_IOTA_HPP
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#include <sprout/config.hpp>
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#include <sprout/index_tuple.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/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 Container, typename T, sprout::index_t... Indexes>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Container>::type iota_impl(
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Container const& cont,
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sprout::index_tuple<Indexes...>,
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T value,
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typename sprout::container_traits<Container>::difference_type offset,
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typename sprout::container_traits<Container>::size_type size
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)
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{
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return sprout::remake<Container>(
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cont,
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sprout::size(cont),
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(Indexes >= offset && Indexes < offset + size
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? value + (Indexes - offset)
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: *sprout::next(sprout::internal_begin(cont), Indexes)
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)...
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);
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}
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} // namespace detail
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//
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// iota
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//
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template<typename Container, typename T>
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inline SPROUT_CONSTEXPR typename sprout::fixed::result_of::algorithm<Container>::type iota(
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Container const& cont,
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T value
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)
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{
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return sprout::fixed::detail::iota_impl(
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cont,
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typename sprout::index_range<0, sprout::container_traits<Container>::static_size>::type(),
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value,
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sprout::internal_begin_offset(cont),
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sprout::size(cont)
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);
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}
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} // namespace fixed
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using sprout::fixed::iota;
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} // namespace sprout
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#endif // #ifndef SPROUT_NUMERIC_FIXED_IOTA_HPP
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