1//===----------------------------------------------------------------------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is dual licensed under the MIT and the University of Illinois Open
6// Source Licenses. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10// type_traits
11
12// extent
13
14#include <type_traits>
15
16#include "test_macros.h"
17
18template <class T, unsigned A>
19void test_extent()
20{
21    static_assert((std::extent<T>::value == A), "");
22    static_assert((std::extent<const T>::value == A), "");
23    static_assert((std::extent<volatile T>::value == A), "");
24    static_assert((std::extent<const volatile T>::value == A), "");
25#if TEST_STD_VER > 14
26    static_assert((std::extent_v<T> == A), "");
27    static_assert((std::extent_v<const T> == A), "");
28    static_assert((std::extent_v<volatile T> == A), "");
29    static_assert((std::extent_v<const volatile T> == A), "");
30#endif
31}
32
33template <class T, unsigned A>
34void test_extent1()
35{
36    static_assert((std::extent<T, 1>::value == A), "");
37    static_assert((std::extent<const T, 1>::value == A), "");
38    static_assert((std::extent<volatile T, 1>::value == A), "");
39    static_assert((std::extent<const volatile T, 1>::value == A), "");
40#if TEST_STD_VER > 14
41    static_assert((std::extent_v<T, 1> == A), "");
42    static_assert((std::extent_v<const T, 1> == A), "");
43    static_assert((std::extent_v<volatile T, 1> == A), "");
44    static_assert((std::extent_v<const volatile T, 1> == A), "");
45#endif
46}
47
48class Class
49{
50public:
51    ~Class();
52};
53
54int main()
55{
56    test_extent<void, 0>();
57    test_extent<int&, 0>();
58    test_extent<Class, 0>();
59    test_extent<int*, 0>();
60    test_extent<const int*, 0>();
61    test_extent<int, 0>();
62    test_extent<double, 0>();
63    test_extent<bool, 0>();
64    test_extent<unsigned, 0>();
65
66    test_extent<int[2], 2>();
67    test_extent<int[2][4], 2>();
68    test_extent<int[][4], 0>();
69
70    test_extent1<int, 0>();
71    test_extent1<int[2], 0>();
72    test_extent1<int[2][4], 4>();
73    test_extent1<int[][4], 4>();
74}
75