17 #ifdef abs
18 #error abs is defined
61 template <class T, class = decltype(::abs(std::declval<T>()))>
72   static_assert((std::is_same<decltype(abs((float)0)), float>::value), "");  in test_abs()
73   static_assert((std::is_same<decltype(abs((double)0)), double>::value), "");  in test_abs()
75       (std::is_same<decltype(abs((long double)0)), long double>::value), "");  in test_abs()
76   static_assert((std::is_same<decltype(abs((int)0)), int>::value), "");  in test_abs()
77   static_assert((std::is_same<decltype(abs((long)0)), long>::value), "");  in test_abs()
78   static_assert((std::is_same<decltype(abs((long long)0)), long long>::value),  in test_abs()
80   static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),  in test_abs()
82   static_assert((std::is_same<decltype(abs((unsigned short)0)), int>::value),  in test_abs()
84   static_assert((std::is_same<decltype(abs((signed char)0)), int>::value),  in test_abs()
86   static_assert((std::is_same<decltype(abs((short)0)), int>::value),  in test_abs()
88   static_assert((std::is_same<decltype(abs((unsigned char)0)), int>::value),  in test_abs()
90   static_assert((std::is_same<decltype(abs((char)0)), int>::value),  in test_abs()
100   assert(abs(-1.) == 1);  in test_abs()
142     static_assert((std::is_same<decltype(abs(0)), int>::value), "");  in main()