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// type_traits
10
11// rank
12
13#include <type_traits>
14
15#include "test_macros.h"
16
17template <class T, unsigned A>
18void test_rank()
19{
20 static_assert( std::rank<T>::value == A, "");
21 static_assert( std::rank<const T>::value == A, "");
22 static_assert( std::rank<volatile T>::value == A, "");
23 static_assert( std::rank<const volatile T>::value == A, "");
24#if TEST_STD_VER > 14
25 static_assert( std::rank_v<T> == A, "");
26 static_assert( std::rank_v<const T> == A, "");
27 static_assert( std::rank_v<volatile T> == A, "");
28 static_assert( std::rank_v<const volatile T> == A, "");
29#endif
30}
31
32class Class
33{
34public:
35 ~Class();
36};
37
38int main(int, char**)
39{
40 test_rank<void, 0>();
41 test_rank<int&, 0>();
42 test_rank<Class, 0>();
43 test_rank<int*, 0>();
44 test_rank<const int*, 0>();
45 test_rank<int, 0>();
46 test_rank<double, 0>();
47 test_rank<bool, 0>();
48 test_rank<unsigned, 0>();
49
50 test_rank<char[3], 1>();
51 test_rank<char[][3], 2>();
52 test_rank<char[][4][3], 3>();
53
54 return 0;
55}
56

source code of libcxx/test/std/utilities/meta/meta.unary.prop.query/rank.pass.cpp