| 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 | |
| 11 | // template<class T> |
| 12 | // concept floating_point = // see below |
| 13 | |
| 14 | #include <concepts> |
| 15 | #include <type_traits> |
| 16 | |
| 17 | #include "arithmetic.h" |
| 18 | |
| 19 | template <typename T> |
| 20 | constexpr bool CheckFloatingPointQualifiers() { |
| 21 | constexpr bool result = std::floating_point<T>; |
| 22 | static_assert(std::floating_point<const T> == result); |
| 23 | static_assert(std::floating_point<volatile T> == result); |
| 24 | static_assert(std::floating_point<const volatile T> == result); |
| 25 | |
| 26 | static_assert(!std::floating_point<T&>); |
| 27 | static_assert(!std::floating_point<const T&>); |
| 28 | static_assert(!std::floating_point<volatile T&>); |
| 29 | static_assert(!std::floating_point<const volatile T&>); |
| 30 | |
| 31 | static_assert(!std::floating_point<T&&>); |
| 32 | static_assert(!std::floating_point<const T&&>); |
| 33 | static_assert(!std::floating_point<volatile T&&>); |
| 34 | static_assert(!std::floating_point<const volatile T&&>); |
| 35 | |
| 36 | static_assert(!std::floating_point<T*>); |
| 37 | static_assert(!std::floating_point<const T*>); |
| 38 | static_assert(!std::floating_point<volatile T*>); |
| 39 | static_assert(!std::floating_point<const volatile T*>); |
| 40 | |
| 41 | static_assert(!std::floating_point<T (*)()>); |
| 42 | static_assert(!std::floating_point<T (&)()>); |
| 43 | static_assert(!std::floating_point<T (&&)()>); |
| 44 | |
| 45 | return result; |
| 46 | } |
| 47 | |
| 48 | // floating-point types |
| 49 | static_assert(CheckFloatingPointQualifiers<float>()); |
| 50 | static_assert(CheckFloatingPointQualifiers<double>()); |
| 51 | static_assert(CheckFloatingPointQualifiers<long double>()); |
| 52 | |
| 53 | // types that aren't floating-point |
| 54 | static_assert(!CheckFloatingPointQualifiers<signed char>()); |
| 55 | static_assert(!CheckFloatingPointQualifiers<unsigned char>()); |
| 56 | static_assert(!CheckFloatingPointQualifiers<short>()); |
| 57 | static_assert(!CheckFloatingPointQualifiers<unsigned short>()); |
| 58 | static_assert(!CheckFloatingPointQualifiers<int>()); |
| 59 | static_assert(!CheckFloatingPointQualifiers<unsigned int>()); |
| 60 | static_assert(!CheckFloatingPointQualifiers<long>()); |
| 61 | static_assert(!CheckFloatingPointQualifiers<unsigned long>()); |
| 62 | static_assert(!CheckFloatingPointQualifiers<long long>()); |
| 63 | static_assert(!CheckFloatingPointQualifiers<unsigned long long>()); |
| 64 | static_assert(!CheckFloatingPointQualifiers<wchar_t>()); |
| 65 | static_assert(!CheckFloatingPointQualifiers<bool>()); |
| 66 | static_assert(!CheckFloatingPointQualifiers<char>()); |
| 67 | static_assert(!CheckFloatingPointQualifiers<char8_t>()); |
| 68 | static_assert(!CheckFloatingPointQualifiers<char16_t>()); |
| 69 | static_assert(!CheckFloatingPointQualifiers<char32_t>()); |
| 70 | static_assert(!std::floating_point<void>); |
| 71 | |
| 72 | static_assert(!CheckFloatingPointQualifiers<ClassicEnum>()); |
| 73 | static_assert(!CheckFloatingPointQualifiers<ScopedEnum>()); |
| 74 | static_assert(!CheckFloatingPointQualifiers<EmptyStruct>()); |
| 75 | static_assert(!CheckFloatingPointQualifiers<int EmptyStruct::*>()); |
| 76 | static_assert(!CheckFloatingPointQualifiers<int (EmptyStruct::*)()>()); |
| 77 |