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
18TEST_CONSTEXPR_CXX14 bool tests() {
19 {
20 std::array<double, 1> const array = {3.3};
21 assert(std::get<0>(array) == 3.3);
22 }
23 {
24 std::array<double, 2> const array = {3.3, 4.4};
25 assert(std::get<0>(array) == 3.3);
26 assert(std::get<1>(array) == 4.4);
27 }
28 {
29 std::array<double, 3> const array = {3.3, 4.4, 5.5};
30 assert(std::get<0>(array) == 3.3);
31 assert(std::get<1>(array) == 4.4);
32 assert(std::get<2>(array) == 5.5);
33 }
34 {
35 std::array<double, 1> const array = {3.3};
36 static_assert(std::is_same<double const&, decltype(std::get<0>(array))>::value, "");
37 }
38
39 return true;
40}
41
42int main(int, char**) {
43 tests();
44#if TEST_STD_VER >= 14
45 static_assert(tests(), "");
46#endif
47 return 0;
48}
49

source code of libcxx/test/std/containers/sequences/array/array.tuple/get_const.pass.cpp