1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is dual licensed under the MIT and the University of Illinois Open 6// Source Licenses. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// type_traits 11 12// is_signed 13 14#include <type_traits> 15 16template <class T> 17void test_is_signed() 18{ 19 static_assert( std::is_signed<T>::value, ""); 20 static_assert( std::is_signed<const T>::value, ""); 21 static_assert( std::is_signed<volatile T>::value, ""); 22 static_assert( std::is_signed<const volatile T>::value, ""); 23} 24 25template <class T> 26void test_is_not_signed() 27{ 28 static_assert(!std::is_signed<T>::value, ""); 29 static_assert(!std::is_signed<const T>::value, ""); 30 static_assert(!std::is_signed<volatile T>::value, ""); 31 static_assert(!std::is_signed<const volatile T>::value, ""); 32} 33 34class Class 35{ 36public: 37 ~Class(); 38}; 39 40int main() 41{ 42 test_is_not_signed<void>(); 43 test_is_not_signed<int&>(); 44 test_is_not_signed<Class>(); 45 test_is_not_signed<int*>(); 46 test_is_not_signed<const int*>(); 47 test_is_not_signed<char[3]>(); 48 test_is_not_signed<char[]>(); 49 test_is_not_signed<bool>(); 50 test_is_not_signed<unsigned>(); 51 52 test_is_signed<int>(); 53 test_is_signed<double>(); 54 55#ifndef _LIBCPP_HAS_NO_INT128 56 test_is_signed<__int128_t>(); 57 test_is_not_signed<__uint128_t>(); 58#endif 59} 60