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// is_integral
12
13#include <type_traits>
14#include <cstddef> // for std::nullptr_t
15#include "test_macros.h"
16
17template <class T>
18void test_is_integral()
19{
20 static_assert( std::is_integral<T>::value, "");
21 static_assert( std::is_integral<const T>::value, "");
22 static_assert( std::is_integral<volatile T>::value, "");
23 static_assert( std::is_integral<const volatile T>::value, "");
24#if TEST_STD_VER > 14
25 static_assert( std::is_integral_v<T>, "");
26 static_assert( std::is_integral_v<const T>, "");
27 static_assert( std::is_integral_v<volatile T>, "");
28 static_assert( std::is_integral_v<const volatile T>, "");
29#endif
30}
31
32template <class T>
33void test_is_not_integral()
34{
35 static_assert(!std::is_integral<T>::value, "");
36 static_assert(!std::is_integral<const T>::value, "");
37 static_assert(!std::is_integral<volatile T>::value, "");
38 static_assert(!std::is_integral<const volatile T>::value, "");
39#if TEST_STD_VER > 14
40 static_assert(!std::is_integral_v<T>, "");
41 static_assert(!std::is_integral_v<const T>, "");
42 static_assert(!std::is_integral_v<volatile T>, "");
43 static_assert(!std::is_integral_v<const volatile T>, "");
44#endif
45}
46
47class Empty
48{
49};
50
51class NotEmpty
52{
53 virtual ~NotEmpty();
54};
55
56union Union {};
57
58struct bit_zero
59{
60 int : 0;
61};
62
63class Abstract
64{
65 virtual ~Abstract() = 0;
66};
67
68enum Enum {zero, one};
69struct incomplete_type;
70
71typedef void (*FunctionPtr)();
72
73
74int main(int, char**)
75{
76 test_is_integral<short>();
77 test_is_integral<unsigned short>();
78 test_is_integral<int>();
79 test_is_integral<unsigned int>();
80 test_is_integral<long>();
81 test_is_integral<unsigned long>();
82 test_is_integral<bool>();
83 test_is_integral<char>();
84 test_is_integral<signed char>();
85 test_is_integral<unsigned char>();
86 test_is_integral<wchar_t>();
87#ifndef TEST_HAS_NO_CHAR8_T
88 test_is_integral<char8_t>();
89#endif
90
91 test_is_not_integral<std::nullptr_t>();
92 test_is_not_integral<void>();
93 test_is_not_integral<int&>();
94 test_is_not_integral<int&&>();
95 test_is_not_integral<int*>();
96 test_is_not_integral<double>();
97 test_is_not_integral<const int*>();
98 test_is_not_integral<char[3]>();
99 test_is_not_integral<char[]>();
100 test_is_not_integral<Union>();
101 test_is_not_integral<Enum>();
102 test_is_not_integral<FunctionPtr>();
103 test_is_not_integral<Empty>();
104 test_is_not_integral<bit_zero>();
105 test_is_not_integral<NotEmpty>();
106 test_is_not_integral<Abstract>();
107 test_is_not_integral<incomplete_type>();
108
109 return 0;
110}
111

source code of libcxx/test/std/utilities/meta/meta.unary/meta.unary.cat/is_integral.pass.cpp