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// is_integral
13
14#include <type_traits>
15#include <cstddef>        // for std::nullptr_t
16#include "test_macros.h"
17
18template <class T>
19void test_is_integral()
20{
21    static_assert( std::is_integral<T>::value, "");
22    static_assert( std::is_integral<const T>::value, "");
23    static_assert( std::is_integral<volatile T>::value, "");
24    static_assert( std::is_integral<const volatile T>::value, "");
25#if TEST_STD_VER > 14
26    static_assert( std::is_integral_v<T>, "");
27    static_assert( std::is_integral_v<const T>, "");
28    static_assert( std::is_integral_v<volatile T>, "");
29    static_assert( std::is_integral_v<const volatile T>, "");
30#endif
31}
32
33template <class T>
34void test_is_not_integral()
35{
36    static_assert(!std::is_integral<T>::value, "");
37    static_assert(!std::is_integral<const T>::value, "");
38    static_assert(!std::is_integral<volatile T>::value, "");
39    static_assert(!std::is_integral<const volatile T>::value, "");
40#if TEST_STD_VER > 14
41    static_assert(!std::is_integral_v<T>, "");
42    static_assert(!std::is_integral_v<const T>, "");
43    static_assert(!std::is_integral_v<volatile T>, "");
44    static_assert(!std::is_integral_v<const volatile T>, "");
45#endif
46}
47
48class Empty
49{
50};
51
52class NotEmpty
53{
54    virtual ~NotEmpty();
55};
56
57union Union {};
58
59struct bit_zero
60{
61    int :  0;
62};
63
64class Abstract
65{
66    virtual ~Abstract() = 0;
67};
68
69enum Enum {zero, one};
70struct incomplete_type;
71
72typedef void (*FunctionPtr)();
73
74
75int main()
76{
77    test_is_integral<short>();
78    test_is_integral<unsigned short>();
79    test_is_integral<int>();
80    test_is_integral<unsigned int>();
81    test_is_integral<long>();
82    test_is_integral<unsigned long>();
83    test_is_integral<bool>();
84    test_is_integral<char>();
85    test_is_integral<signed char>();
86    test_is_integral<unsigned char>();
87    test_is_integral<wchar_t>();
88
89    test_is_not_integral<std::nullptr_t>();
90    test_is_not_integral<void>();
91    test_is_not_integral<int&>();
92    test_is_not_integral<int&&>();
93    test_is_not_integral<int*>();
94    test_is_not_integral<double>();
95    test_is_not_integral<const int*>();
96    test_is_not_integral<char[3]>();
97    test_is_not_integral<char[]>();
98    test_is_not_integral<Union>();
99    test_is_not_integral<Enum>();
100    test_is_not_integral<FunctionPtr>();
101    test_is_not_integral<Empty>();
102    test_is_not_integral<bit_zero>();
103    test_is_not_integral<NotEmpty>();
104    test_is_not_integral<Abstract>();
105    test_is_not_integral<incomplete_type>();
106}
107