98 lines
3.9 KiB
C++
98 lines
3.9 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 unsigned_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 CheckUnsignedIntegralQualifiers() {
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constexpr bool result = std::unsigned_integral<T>;
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static_assert(std::unsigned_integral<const T> == result);
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static_assert(std::unsigned_integral<volatile T> == result);
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static_assert(std::unsigned_integral<const volatile T> == result);
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static_assert(!std::unsigned_integral<T&>);
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static_assert(!std::unsigned_integral<const T&>);
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static_assert(!std::unsigned_integral<volatile T&>);
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static_assert(!std::unsigned_integral<const volatile T&>);
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static_assert(!std::unsigned_integral<T&&>);
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static_assert(!std::unsigned_integral<const T&&>);
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static_assert(!std::unsigned_integral<volatile T&&>);
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static_assert(!std::unsigned_integral<const volatile T&&>);
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static_assert(!std::unsigned_integral<T*>);
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static_assert(!std::unsigned_integral<const T*>);
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static_assert(!std::unsigned_integral<volatile T*>);
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static_assert(!std::unsigned_integral<const volatile T*>);
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static_assert(!std::unsigned_integral<T (*)()>);
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static_assert(!std::unsigned_integral<T (&)()>);
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static_assert(!std::unsigned_integral<T(&&)()>);
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return result;
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}
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// standard unsigned types
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static_assert(CheckUnsignedIntegralQualifiers<unsigned char>());
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static_assert(CheckUnsignedIntegralQualifiers<unsigned short>());
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static_assert(CheckUnsignedIntegralQualifiers<unsigned int>());
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static_assert(CheckUnsignedIntegralQualifiers<unsigned long>());
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static_assert(CheckUnsignedIntegralQualifiers<unsigned long long>());
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// Whether bool and character types are signed or unsigned is impl-defined
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static_assert(CheckUnsignedIntegralQualifiers<wchar_t>() ==
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!std::is_signed_v<wchar_t>);
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static_assert(CheckUnsignedIntegralQualifiers<bool>() ==
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!std::is_signed_v<bool>);
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static_assert(CheckUnsignedIntegralQualifiers<char>() ==
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!std::is_signed_v<char>);
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static_assert(CheckUnsignedIntegralQualifiers<char8_t>() ==
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!std::is_signed_v<char8_t>);
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static_assert(CheckUnsignedIntegralQualifiers<char16_t>() ==
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!std::is_signed_v<char16_t>);
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static_assert(CheckUnsignedIntegralQualifiers<char32_t>() ==
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!std::is_signed_v<char32_t>);
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// extended integers
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#ifndef TEST_HAS_NO_INT128
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static_assert(CheckUnsignedIntegralQualifiers<__uint128_t>());
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static_assert(!CheckUnsignedIntegralQualifiers<__int128_t>());
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#endif
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// integer types that aren't unsigned integrals
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static_assert(!CheckUnsignedIntegralQualifiers<signed char>());
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static_assert(!CheckUnsignedIntegralQualifiers<short>());
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static_assert(!CheckUnsignedIntegralQualifiers<int>());
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static_assert(!CheckUnsignedIntegralQualifiers<long>());
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static_assert(!CheckUnsignedIntegralQualifiers<long long>());
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static_assert(!std::unsigned_integral<void>);
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static_assert(!CheckUnsignedIntegralQualifiers<float>());
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static_assert(!CheckUnsignedIntegralQualifiers<double>());
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static_assert(!CheckUnsignedIntegralQualifiers<long double>());
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static_assert(!CheckUnsignedIntegralQualifiers<ClassicEnum>());
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static_assert(!CheckUnsignedIntegralQualifiers<ScopedEnum>());
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static_assert(!CheckUnsignedIntegralQualifiers<EmptyStruct>());
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static_assert(!CheckUnsignedIntegralQualifiers<int EmptyStruct::*>());
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static_assert(!CheckUnsignedIntegralQualifiers<int (EmptyStruct::*)()>());
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static_assert(CheckSubsumption(0));
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static_assert(CheckSubsumption(0U));
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int main(int, char**) { return 0; }
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