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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
//
//===----------------------------------------------------------------------===//
// type_traits
// is_unsigned
#include <type_traits>
#include <cstddef>
#include "test_macros.h"
template <class T>
void test_is_unsigned()
{
static_assert( std::is_unsigned<T>::value, "");
static_assert( std::is_unsigned<const T>::value, "");
static_assert( std::is_unsigned<volatile T>::value, "");
static_assert( std::is_unsigned<const volatile T>::value, "");
#if TEST_STD_VER > 14
static_assert( std::is_unsigned_v<T>, "");
static_assert( std::is_unsigned_v<const T>, "");
static_assert( std::is_unsigned_v<volatile T>, "");
static_assert( std::is_unsigned_v<const volatile T>, "");
#endif
}
template <class T>
void test_is_not_unsigned()
{
static_assert(!std::is_unsigned<T>::value, "");
static_assert(!std::is_unsigned<const T>::value, "");
static_assert(!std::is_unsigned<volatile T>::value, "");
static_assert(!std::is_unsigned<const volatile T>::value, "");
#if TEST_STD_VER > 14
static_assert(!std::is_unsigned_v<T>, "");
static_assert(!std::is_unsigned_v<const T>, "");
static_assert(!std::is_unsigned_v<volatile T>, "");
static_assert(!std::is_unsigned_v<const volatile T>, "");
#endif
}
class Class
{
public:
~Class();
};
struct A; // incomplete
class incomplete_type;
class Empty {};
class NotEmpty {
virtual ~NotEmpty();
};
union Union {};
struct bit_zero {
int : 0;
};
class Abstract {
virtual ~Abstract() = 0;
};
enum Enum { zero, one };
enum EnumSigned : int { two };
enum EnumUnsigned : unsigned { three };
enum class EnumClass { zero, one };
typedef void (*FunctionPtr)();
int main(int, char**)
{
// Cases where !is_arithmetic implies !is_unsigned
test_is_not_unsigned<std::nullptr_t>();
test_is_not_unsigned<void>();
test_is_not_unsigned<int&>();
test_is_not_unsigned<int&&>();
test_is_not_unsigned<Class>();
test_is_not_unsigned<int*>();
test_is_not_unsigned<const int*>();
test_is_not_unsigned<char[3]>();
test_is_not_unsigned<char[]>();
test_is_not_unsigned<Union>();
test_is_not_unsigned<Enum>();
test_is_not_unsigned<EnumSigned>();
test_is_not_unsigned<EnumUnsigned>();
test_is_not_unsigned<EnumClass>();
test_is_not_unsigned<FunctionPtr>();
test_is_not_unsigned<Empty>();
test_is_not_unsigned<incomplete_type>();
test_is_not_unsigned<A>();
test_is_not_unsigned<bit_zero>();
test_is_not_unsigned<NotEmpty>();
test_is_not_unsigned<Abstract>();
test_is_not_unsigned<signed char>();
test_is_not_unsigned<short>();
test_is_not_unsigned<int>();
test_is_not_unsigned<long>();
test_is_not_unsigned<float>();
test_is_not_unsigned<double>();
test_is_unsigned<unsigned char>();
test_is_unsigned<unsigned short>();
test_is_unsigned<unsigned int>();
test_is_unsigned<unsigned long>();
test_is_unsigned<bool>();
test_is_unsigned<unsigned>();
#ifndef TEST_HAS_NO_INT128
test_is_unsigned<__uint128_t>();
test_is_not_unsigned<__int128_t>();
#endif
return 0;
}
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