types.pass.cpp revision f5256e16dfc425c1d466f6308d4026d529ce9e0b
1//===----------------------------------------------------------------------===// 2// 3// The LLVM Compiler Infrastructure 4// 5// This file is distributed under the University of Illinois Open Source 6// License. See LICENSE.TXT for details. 7// 8//===----------------------------------------------------------------------===// 9 10// <functional> 11 12// template<Returnable R, CopyConstructible... ArgTypes> 13// class function<R(ArgTypes...)> 14// : public unary_function<T1, R> // iff sizeof...(ArgTypes) == 1 and 15// // ArgTypes contains T1 16// : public binary_function<T1, T2, R> // iff sizeof...(ArgTypes) == 2 and 17// // ArgTypes contains T1 and T2 18// { 19// public: 20// typedef R result_type; 21// ... 22// }; 23 24#include <functional> 25#include <type_traits> 26 27int main() 28{ 29 static_assert((!std::is_base_of<std::unary_function <int, int>, 30 std::function<int()> >::value), ""); 31 static_assert((!std::is_base_of<std::binary_function<int, int, int>, 32 std::function<int()> >::value), ""); 33 static_assert(( std::is_same< std::function<int()>::result_type, 34 int>::value), ""); 35 36 static_assert(( std::is_base_of<std::unary_function <int, double>, 37 std::function<double(int)> >::value), ""); 38 static_assert((!std::is_base_of<std::binary_function<int, int, double>, 39 std::function<double(int)> >::value), ""); 40 static_assert(( std::is_same< std::function<double(int)>::result_type, 41 double>::value), ""); 42 43 static_assert((!std::is_base_of<std::unary_function <int, double>, 44 std::function<double(int, char)> >::value), ""); 45 static_assert(( std::is_base_of<std::binary_function<int, char, double>, 46 std::function<double(int, char)> >::value), ""); 47 static_assert(( std::is_same< std::function<double(int, char)>::result_type, 48 double>::value), ""); 49} 50