index_sequence.hpp

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#pragma once
 
#include <utility>
 
namespace iganet {
namespace utils {
 
namespace detail {
 
template <std::size_t, typename> struct make_reverse_index_sequence_helper;
 
template <std::size_t N, std::size_t... NN>
struct make_reverse_index_sequence_helper<N, std::index_sequence<NN...>>
    : std::index_sequence<(N - NN)...> {};
 
} // namespace detail
 
template <std::size_t N>
struct make_reverse_index_sequence
    : detail::make_reverse_index_sequence_helper<
          N - 1, decltype(std::make_index_sequence<N>{})> {};
 
} // namespace utils
} // namespace iganet