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 // UNSUPPORTED: c++03, c++11, c++14, c++17
10 // UNSUPPORTED: libcpp-no-concepts
11 
12 // template<class T>
13 // concept floating_point = // see below
14 
15 #include <concepts>
16 #include <type_traits>
17 
18 #include "arithmetic.h"
19 
20 template <typename T>
21 constexpr bool CheckFloatingPointQualifiers() {
22   constexpr bool result = std::floating_point<T>;
23   static_assert(std::floating_point<const T> == result);
24   static_assert(std::floating_point<volatile T> == result);
25   static_assert(std::floating_point<const volatile T> == result);
26 
27   static_assert(!std::floating_point<T&>);
28   static_assert(!std::floating_point<const T&>);
29   static_assert(!std::floating_point<volatile T&>);
30   static_assert(!std::floating_point<const volatile T&>);
31 
32   static_assert(!std::floating_point<T&&>);
33   static_assert(!std::floating_point<const T&&>);
34   static_assert(!std::floating_point<volatile T&&>);
35   static_assert(!std::floating_point<const volatile T&&>);
36 
37   static_assert(!std::floating_point<T*>);
38   static_assert(!std::floating_point<const T*>);
39   static_assert(!std::floating_point<volatile T*>);
40   static_assert(!std::floating_point<const volatile T*>);
41 
42   static_assert(!std::floating_point<T (*)()>);
43   static_assert(!std::floating_point<T (&)()>);
44   static_assert(!std::floating_point<T(&&)()>);
45 
46   return result;
47 }
48 
49 // floating-point types
50 static_assert(CheckFloatingPointQualifiers<float>());
51 static_assert(CheckFloatingPointQualifiers<double>());
52 static_assert(CheckFloatingPointQualifiers<long double>());
53 
54 // types that aren't floating-point
55 static_assert(!CheckFloatingPointQualifiers<signed char>());
56 static_assert(!CheckFloatingPointQualifiers<unsigned char>());
57 static_assert(!CheckFloatingPointQualifiers<short>());
58 static_assert(!CheckFloatingPointQualifiers<unsigned short>());
59 static_assert(!CheckFloatingPointQualifiers<int>());
60 static_assert(!CheckFloatingPointQualifiers<unsigned int>());
61 static_assert(!CheckFloatingPointQualifiers<long>());
62 static_assert(!CheckFloatingPointQualifiers<unsigned long>());
63 static_assert(!CheckFloatingPointQualifiers<long long>());
64 static_assert(!CheckFloatingPointQualifiers<unsigned long long>());
65 static_assert(!CheckFloatingPointQualifiers<wchar_t>());
66 static_assert(!CheckFloatingPointQualifiers<bool>());
67 static_assert(!CheckFloatingPointQualifiers<char>());
68 static_assert(!CheckFloatingPointQualifiers<char8_t>());
69 static_assert(!CheckFloatingPointQualifiers<char16_t>());
70 static_assert(!CheckFloatingPointQualifiers<char32_t>());
71 static_assert(!std::floating_point<void>);
72 
73 static_assert(!CheckFloatingPointQualifiers<ClassicEnum>());
74 static_assert(!CheckFloatingPointQualifiers<ScopedEnum>());
75 static_assert(!CheckFloatingPointQualifiers<EmptyStruct>());
76 static_assert(!CheckFloatingPointQualifiers<int EmptyStruct::*>());
77 static_assert(!CheckFloatingPointQualifiers<int (EmptyStruct::*)()>());
78 
79 int main(int, char**) { return 0; }
80