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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <array>
// template <size_t I, class T, size_t N> T& get(array<T, N>& a);
#include <array>
#include <cassert>
#include "test_macros.h"
// std::array is explicitly allowed to be initialized with A a = { init-list };.
// Disable the missing braces warning for this reason.
#include "disable_missing_braces_warning.h"
template <typename ...T>
TEST_CONSTEXPR std::array<int, sizeof...(T)> tempArray(T ...args)
{
return {args...};
}
TEST_CONSTEXPR_CXX14 bool tests()
{
{
std::array<double, 1> array = {3.3};
assert(std::get<0>(array) == 3.3);
std::get<0>(array) = 99.1;
assert(std::get<0>(array) == 99.1);
}
{
std::array<double, 2> array = {3.3, 4.4};
assert(std::get<0>(array) == 3.3);
assert(std::get<1>(array) == 4.4);
std::get<0>(array) = 99.1;
std::get<1>(array) = 99.2;
assert(std::get<0>(array) == 99.1);
assert(std::get<1>(array) == 99.2);
}
{
std::array<double, 3> array = {3.3, 4.4, 5.5};
assert(std::get<0>(array) == 3.3);
assert(std::get<1>(array) == 4.4);
assert(std::get<2>(array) == 5.5);
std::get<1>(array) = 99.2;
assert(std::get<0>(array) == 3.3);
assert(std::get<1>(array) == 99.2);
assert(std::get<2>(array) == 5.5);
}
{
std::array<double, 1> array = {3.3};
static_assert(std::is_same<double&, decltype(std::get<0>(array))>::value, "");
}
{
assert(std::get<0>(tempArray(1, 2, 3)) == 1);
assert(std::get<1>(tempArray(1, 2, 3)) == 2);
assert(std::get<2>(tempArray(1, 2, 3)) == 3);
}
return true;
}
int main(int, char**)
{
tests();
#if TEST_STD_VER >= 14
static_assert(tests(), "");
#endif
return 0;
}
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