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53 lines
1.3 KiB
C++
53 lines
1.3 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++98, c++03, c++11, c++14, c++17
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// <span>
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// tuple_element<I, span<T, N> >::type
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#include <span>
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#include "test_macros.h"
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template <class T, std::size_t N, std::size_t Idx>
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void test()
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{
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{
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typedef std::span<T, N> C;
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ASSERT_SAME_TYPE(typename std::tuple_element<Idx, C>::type, T);
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}
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{
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typedef std::span<T const, N> C;
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ASSERT_SAME_TYPE(typename std::tuple_element<Idx, C>::type, T const);
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}
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{
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typedef std::span<T volatile, N> C;
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ASSERT_SAME_TYPE(typename std::tuple_element<Idx, C>::type, T volatile);
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}
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{
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typedef std::span<T const volatile, N> C;
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ASSERT_SAME_TYPE(typename std::tuple_element<Idx, C>::type, T const volatile);
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}
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}
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int main(int, char**)
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{
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test<double, 3, 0>();
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test<double, 3, 1>();
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test<double, 3, 2>();
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test<int, 5, 0>();
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test<int, 5, 1>();
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test<int, 5, 2>();
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test<int, 5, 3>();
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test<int, 5, 4>();
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return 0;
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}
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