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77 lines
2.0 KiB
C++
77 lines
2.0 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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// type_traits
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// is_signed
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#include <type_traits>
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#include "test_macros.h"
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template <class T>
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void test_is_signed()
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{
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static_assert( std::is_signed<T>::value, "");
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static_assert( std::is_signed<const T>::value, "");
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static_assert( std::is_signed<volatile T>::value, "");
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static_assert( std::is_signed<const volatile T>::value, "");
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#if TEST_STD_VER > 14
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static_assert( std::is_signed_v<T>, "");
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static_assert( std::is_signed_v<const T>, "");
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static_assert( std::is_signed_v<volatile T>, "");
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static_assert( std::is_signed_v<const volatile T>, "");
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#endif
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}
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template <class T>
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void test_is_not_signed()
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{
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static_assert(!std::is_signed<T>::value, "");
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static_assert(!std::is_signed<const T>::value, "");
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static_assert(!std::is_signed<volatile T>::value, "");
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static_assert(!std::is_signed<const volatile T>::value, "");
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#if TEST_STD_VER > 14
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static_assert(!std::is_signed_v<T>, "");
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static_assert(!std::is_signed_v<const T>, "");
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static_assert(!std::is_signed_v<volatile T>, "");
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static_assert(!std::is_signed_v<const volatile T>, "");
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#endif
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}
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class Class
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{
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public:
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~Class();
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};
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struct A; // incomplete
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int main(int, char**)
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{
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test_is_not_signed<void>();
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test_is_not_signed<int&>();
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test_is_not_signed<Class>();
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test_is_not_signed<int*>();
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test_is_not_signed<const int*>();
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test_is_not_signed<char[3]>();
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test_is_not_signed<char[]>();
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test_is_not_signed<bool>();
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test_is_not_signed<unsigned>();
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test_is_not_signed<A>();
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test_is_signed<int>();
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test_is_signed<double>();
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#ifndef _LIBCPP_HAS_NO_INT128
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test_is_signed<__int128_t>();
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test_is_not_signed<__uint128_t>();
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#endif
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return 0;
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}
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