1// 2005-01-26 Douglas Gregor <doug.gregor -at- gmail.com> 2// 3// Copyright (C) 2005-2015 Free Software Foundation, Inc. 4// 5// This file is part of the GNU ISO C++ Library. This library is free 6// software; you can redistribute it and/or modify it under the 7// terms of the GNU General Public License as published by the 8// Free Software Foundation; either version 3, or (at your option) 9// any later version. 10// 11// This library is distributed in the hope that it will be useful, 12// but WITHOUT ANY WARRANTY; without even the implied warranty of 13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14// GNU General Public License for more details. 15// 16// You should have received a copy of the GNU General Public License along 17// with this library; see the file COPYING3. If not see 18// <http://www.gnu.org/licenses/>. 19 20// 3.4 function return types 21#include <tr1/functional> 22#include <tr1/type_traits> 23#include <testsuite_hooks.h> 24#include <testsuite_tr1.h> 25 26class X {}; 27 28struct int_result_type { typedef int result_type; }; 29 30struct int_result_of 31{ 32 template<typename F> struct result { typedef int type; }; 33}; 34 35struct int_result_type_and_float_result_of 36{ 37 typedef int result_type; 38 template<typename F> struct result { typedef float type; }; 39}; 40 41void test01() 42{ 43 bool test __attribute__((unused)) = true; 44 45 using std::tr1::result_of; 46 using std::tr1::is_same; 47 using namespace __gnu_test; 48 49 typedef int (*func_ptr)(float, double); 50 typedef int (&func_ref)(float, double); 51 typedef int (::X::*mem_func_ptr)(float); 52 typedef int (::X::*mem_func_ptr_c)(float) const; 53 typedef int (::X::*mem_func_ptr_v)(float) volatile; 54 typedef int (::X::*mem_func_ptr_cv)(float) const volatile; 55 56 VERIFY((is_same<result_of<int_result_type(float)>::type, int>::value)); 57 VERIFY((is_same<result_of<int_result_of(double)>::type, int>::value)); 58 VERIFY((is_same<result_of<int_result_of(void)>::type, void>::value)); 59 VERIFY((is_same<result_of<const int_result_of(double)>::type, int>::value)); 60 VERIFY((is_same<result_of<volatile int_result_of(void)>::type, void>::value)); 61 VERIFY((is_same<result_of<int_result_type_and_float_result_of(char)>::type, int>::value)); 62 VERIFY((is_same<result_of<func_ptr(char, float)>::type, int>::value)); 63 VERIFY((is_same<result_of<func_ref(char, float)>::type, int>::value)); 64 VERIFY((is_same<result_of<mem_func_ptr(::X,char)>::type, int>::value)); 65 VERIFY((is_same<result_of<mem_func_ptr_c(::X,char)>::type, int>::value)); 66 VERIFY((is_same<result_of<mem_func_ptr_v(::X,char)>::type, int>::value)); 67 VERIFY((is_same<result_of<mem_func_ptr_cv(::X,char)>::type, int>::value)); 68} 69 70int main() 71{ 72 test01(); 73 return 0; 74} 75