1 //===----------------------------------------------------------------------===//
2 //
3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4 // See https://llvm.org/LICENSE.txt for license information.
5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6 //
7 //===----------------------------------------------------------------------===//
8 
9 // <array>
10 
11 // template <size_t I, class T, size_t N> const T& get(const array<T, N>& a);
12 
13 #include <array>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 
18 TEST_CONSTEXPR_CXX14 bool tests()
19 {
20     {
21         std::array<double, 1> const array = {3.3};
22         assert(std::get<0>(array) == 3.3);
23     }
24     {
25         std::array<double, 2> const array = {3.3, 4.4};
26         assert(std::get<0>(array) == 3.3);
27         assert(std::get<1>(array) == 4.4);
28     }
29     {
30         std::array<double, 3> const array = {3.3, 4.4, 5.5};
31         assert(std::get<0>(array) == 3.3);
32         assert(std::get<1>(array) == 4.4);
33         assert(std::get<2>(array) == 5.5);
34     }
35     {
36         std::array<double, 1> const array = {3.3};
37         static_assert(std::is_same<double const&, decltype(std::get<0>(array))>::value, "");
38     }
39 
40     return true;
41 }
42 
43 int main(int, char**)
44 {
45     tests();
46 #if TEST_STD_VER >= 14
47     static_assert(tests(), "");
48 #endif
49     return 0;
50 }
51