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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// UNSUPPORTED: libcpp-no-concepts
// template<class T>
// concept signed_integral = // see below
#include <concepts>
#include <type_traits>
#include "arithmetic.h"
template <typename T>
constexpr bool CheckSignedIntegralQualifiers() {
constexpr bool result = std::signed_integral<T>;
static_assert(std::signed_integral<const T> == result);
static_assert(std::signed_integral<volatile T> == result);
static_assert(std::signed_integral<const volatile T> == result);
static_assert(!std::signed_integral<T&>);
static_assert(!std::signed_integral<const T&>);
static_assert(!std::signed_integral<volatile T&>);
static_assert(!std::signed_integral<const volatile T&>);
static_assert(!std::signed_integral<T&&>);
static_assert(!std::signed_integral<const T&&>);
static_assert(!std::signed_integral<volatile T&&>);
static_assert(!std::signed_integral<const volatile T&&>);
static_assert(!std::signed_integral<T*>);
static_assert(!std::signed_integral<const T*>);
static_assert(!std::signed_integral<volatile T*>);
static_assert(!std::signed_integral<const volatile T*>);
static_assert(!std::signed_integral<T (*)()>);
static_assert(!std::signed_integral<T (&)()>);
static_assert(!std::signed_integral<T(&&)()>);
return result;
}
// standard signed integers
static_assert(CheckSignedIntegralQualifiers<signed char>());
static_assert(CheckSignedIntegralQualifiers<short>());
static_assert(CheckSignedIntegralQualifiers<int>());
static_assert(CheckSignedIntegralQualifiers<long>());
static_assert(CheckSignedIntegralQualifiers<long long>());
// bool and character *may* be signed
static_assert(CheckSignedIntegralQualifiers<wchar_t>() ==
std::is_signed_v<wchar_t>);
static_assert(CheckSignedIntegralQualifiers<bool>() == std::is_signed_v<bool>);
static_assert(CheckSignedIntegralQualifiers<char>() == std::is_signed_v<char>);
static_assert(CheckSignedIntegralQualifiers<char8_t>() ==
std::is_signed_v<char8_t>);
static_assert(CheckSignedIntegralQualifiers<char16_t>() ==
std::is_signed_v<char16_t>);
static_assert(CheckSignedIntegralQualifiers<char32_t>() ==
std::is_signed_v<char32_t>);
// integers that aren't signed integrals
static_assert(!CheckSignedIntegralQualifiers<unsigned char>());
static_assert(!CheckSignedIntegralQualifiers<unsigned short>());
static_assert(!CheckSignedIntegralQualifiers<unsigned int>());
static_assert(!CheckSignedIntegralQualifiers<unsigned long>());
static_assert(!CheckSignedIntegralQualifiers<unsigned long long>());
// extended integers
#ifndef _LIBCPP_HAS_NO_INT128
static_assert(CheckSignedIntegralQualifiers<__int128_t>());
static_assert(!CheckSignedIntegralQualifiers<__uint128_t>());
#endif
// types that aren't even integers shouldn't be signed integers!
static_assert(!std::signed_integral<void>);
static_assert(!CheckSignedIntegralQualifiers<float>());
static_assert(!CheckSignedIntegralQualifiers<double>());
static_assert(!CheckSignedIntegralQualifiers<long double>());
static_assert(!CheckSignedIntegralQualifiers<ClassicEnum>());
static_assert(!CheckSignedIntegralQualifiers<ScopedEnum>());
static_assert(!CheckSignedIntegralQualifiers<EmptyStruct>());
static_assert(!CheckSignedIntegralQualifiers<int EmptyStruct::*>());
static_assert(!CheckSignedIntegralQualifiers<int (EmptyStruct::*)()>());
static_assert(CheckSubsumption(0));
static_assert(CheckSubsumption(0U));
int main(int, char**) { return 0; }
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