derek.holloway
7502bf64a4
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91 lines
3.1 KiB
C++
91 lines
3.1 KiB
C++
//===----------------------------------------------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
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// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
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//
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//===----------------------------------------------------------------------===//
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// UNSUPPORTED: c++03, c++11, c++14, c++17
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// template<class T>
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// concept integral = // see below
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#include <concepts>
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#include <type_traits>
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#include "arithmetic.h"
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#include "test_macros.h"
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template <typename T>
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constexpr bool CheckIntegralQualifiers() {
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constexpr bool result = std::integral<T>;
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static_assert(std::integral<const T> == result);
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static_assert(std::integral<volatile T> == result);
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static_assert(std::integral<const volatile T> == result);
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static_assert(!std::integral<T&>);
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static_assert(!std::integral<const T&>);
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static_assert(!std::integral<volatile T&>);
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static_assert(!std::integral<const volatile T&>);
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static_assert(!std::integral<T&&>);
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static_assert(!std::integral<const T&&>);
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static_assert(!std::integral<volatile T&&>);
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static_assert(!std::integral<const volatile T&&>);
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static_assert(!std::integral<T*>);
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static_assert(!std::integral<const T*>);
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static_assert(!std::integral<volatile T*>);
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static_assert(!std::integral<const volatile T*>);
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static_assert(!std::integral<T (*)()>);
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static_assert(!std::integral<T (&)()>);
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static_assert(!std::integral<T (&&)()>);
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return result;
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}
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// standard signed and unsigned integers
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static_assert(CheckIntegralQualifiers<signed char>());
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static_assert(CheckIntegralQualifiers<unsigned char>());
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static_assert(CheckIntegralQualifiers<short>());
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static_assert(CheckIntegralQualifiers<unsigned short>());
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static_assert(CheckIntegralQualifiers<int>());
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static_assert(CheckIntegralQualifiers<unsigned int>());
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static_assert(CheckIntegralQualifiers<long>());
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static_assert(CheckIntegralQualifiers<unsigned long>());
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static_assert(CheckIntegralQualifiers<long long>());
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static_assert(CheckIntegralQualifiers<unsigned long long>());
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// extended integers
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#ifndef TEST_HAS_NO_INT128
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static_assert(CheckIntegralQualifiers<__int128_t>());
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static_assert(CheckIntegralQualifiers<__uint128_t>());
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#endif
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// bool and char types are also integral
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static_assert(CheckIntegralQualifiers<wchar_t>());
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static_assert(CheckIntegralQualifiers<bool>());
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static_assert(CheckIntegralQualifiers<char>());
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static_assert(CheckIntegralQualifiers<char8_t>());
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static_assert(CheckIntegralQualifiers<char16_t>());
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static_assert(CheckIntegralQualifiers<char32_t>());
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// types that aren't integral
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static_assert(!std::integral<void>);
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static_assert(!CheckIntegralQualifiers<float>());
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static_assert(!CheckIntegralQualifiers<double>());
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static_assert(!CheckIntegralQualifiers<long double>());
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static_assert(!CheckIntegralQualifiers<ClassicEnum>());
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static_assert(!CheckIntegralQualifiers<ScopedEnum>());
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static_assert(!CheckIntegralQualifiers<EmptyStruct>());
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static_assert(!CheckIntegralQualifiers<int EmptyStruct::*>());
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static_assert(!CheckIntegralQualifiers<int (EmptyStruct::*)()>());
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static_assert(CheckSubsumption(0));
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static_assert(CheckSubsumption(0U));
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