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 16 template <class T> 17 void 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 25 template <class T> 26 void 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 34 class Class 35 { 36 public: 37 ~Class(); 38 }; 39 40 int 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[3]>(); 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
