1*df9167bfSStephan T. Lavavej //===----------------------------------------------------------------------===//
2*df9167bfSStephan T. Lavavej //
3*df9167bfSStephan T. Lavavej // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4*df9167bfSStephan T. Lavavej // See https://llvm.org/LICENSE.txt for license information.
5*df9167bfSStephan T. Lavavej // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6*df9167bfSStephan T. Lavavej //
7*df9167bfSStephan T. Lavavej //===----------------------------------------------------------------------===//
8*df9167bfSStephan T. Lavavej 
9*df9167bfSStephan T. Lavavej // UNSUPPORTED: c++03, c++11, c++14, c++17
10*df9167bfSStephan T. Lavavej 
11*df9167bfSStephan T. Lavavej // template<class T>
12*df9167bfSStephan T. Lavavej // concept floating_point = // see below
13*df9167bfSStephan T. Lavavej 
14*df9167bfSStephan T. Lavavej #include <concepts>
15*df9167bfSStephan T. Lavavej #include <type_traits>
16*df9167bfSStephan T. Lavavej 
17*df9167bfSStephan T. Lavavej #include "arithmetic.h"
18*df9167bfSStephan T. Lavavej 
19*df9167bfSStephan T. Lavavej template <typename T>
CheckFloatingPointQualifiers()20*df9167bfSStephan T. Lavavej constexpr bool CheckFloatingPointQualifiers() {
21*df9167bfSStephan T. Lavavej   constexpr bool result = std::floating_point<T>;
22*df9167bfSStephan T. Lavavej   static_assert(std::floating_point<const T> == result);
23*df9167bfSStephan T. Lavavej   static_assert(std::floating_point<volatile T> == result);
24*df9167bfSStephan T. Lavavej   static_assert(std::floating_point<const volatile T> == result);
25*df9167bfSStephan T. Lavavej 
26*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<T&>);
27*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<const T&>);
28*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<volatile T&>);
29*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<const volatile T&>);
30*df9167bfSStephan T. Lavavej 
31*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<T&&>);
32*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<const T&&>);
33*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<volatile T&&>);
34*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<const volatile T&&>);
35*df9167bfSStephan T. Lavavej 
36*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<T*>);
37*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<const T*>);
38*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<volatile T*>);
39*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<const volatile T*>);
40*df9167bfSStephan T. Lavavej 
41*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<T (*)()>);
42*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<T (&)()>);
43*df9167bfSStephan T. Lavavej   static_assert(!std::floating_point<T (&&)()>);
44*df9167bfSStephan T. Lavavej 
45*df9167bfSStephan T. Lavavej   return result;
46*df9167bfSStephan T. Lavavej }
47*df9167bfSStephan T. Lavavej 
48*df9167bfSStephan T. Lavavej // floating-point types
49*df9167bfSStephan T. Lavavej static_assert(CheckFloatingPointQualifiers<float>());
50*df9167bfSStephan T. Lavavej static_assert(CheckFloatingPointQualifiers<double>());
51*df9167bfSStephan T. Lavavej static_assert(CheckFloatingPointQualifiers<long double>());
52*df9167bfSStephan T. Lavavej 
53*df9167bfSStephan T. Lavavej // types that aren't floating-point
54*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<signed char>());
55*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<unsigned char>());
56*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<short>());
57*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<unsigned short>());
58*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<int>());
59*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<unsigned int>());
60*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<long>());
61*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<unsigned long>());
62*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<long long>());
63*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<unsigned long long>());
64*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<wchar_t>());
65*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<bool>());
66*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<char>());
67*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<char8_t>());
68*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<char16_t>());
69*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<char32_t>());
70*df9167bfSStephan T. Lavavej static_assert(!std::floating_point<void>);
71*df9167bfSStephan T. Lavavej 
72*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<ClassicEnum>());
73*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<ScopedEnum>());
74*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<EmptyStruct>());
75*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<int EmptyStruct::*>());
76*df9167bfSStephan T. Lavavej static_assert(!CheckFloatingPointQualifiers<int (EmptyStruct::*)()>());
77