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75 lines
2.6 KiB
C++
75 lines
2.6 KiB
C++
// 2005-01-26 Douglas Gregor <doug.gregor -at- gmail.com>
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//
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// Copyright (C) 2005-2016 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License along
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// with this library; see the file COPYING3. If not see
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// <http://www.gnu.org/licenses/>.
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// 3.4 function return types
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#include <tr1/functional>
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#include <tr1/type_traits>
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#include <testsuite_hooks.h>
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#include <testsuite_tr1.h>
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class X {};
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struct int_result_type { typedef int result_type; };
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struct int_result_of
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{
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template<typename F> struct result { typedef int type; };
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};
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struct int_result_type_and_float_result_of
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{
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typedef int result_type;
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template<typename F> struct result { typedef float type; };
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};
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void test01()
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{
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bool test __attribute__((unused)) = true;
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using std::tr1::result_of;
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using std::tr1::is_same;
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using namespace __gnu_test;
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typedef int (*func_ptr)(float, double);
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typedef int (&func_ref)(float, double);
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typedef int (::X::*mem_func_ptr)(float);
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typedef int (::X::*mem_func_ptr_c)(float) const;
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typedef int (::X::*mem_func_ptr_v)(float) volatile;
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typedef int (::X::*mem_func_ptr_cv)(float) const volatile;
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VERIFY((is_same<result_of<int_result_type(float)>::type, int>::value));
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VERIFY((is_same<result_of<int_result_of(double)>::type, int>::value));
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VERIFY((is_same<result_of<int_result_of(void)>::type, void>::value));
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VERIFY((is_same<result_of<const int_result_of(double)>::type, int>::value));
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VERIFY((is_same<result_of<volatile int_result_of(void)>::type, void>::value));
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VERIFY((is_same<result_of<int_result_type_and_float_result_of(char)>::type, int>::value));
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VERIFY((is_same<result_of<func_ptr(char, float)>::type, int>::value));
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VERIFY((is_same<result_of<func_ref(char, float)>::type, int>::value));
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VERIFY((is_same<result_of<mem_func_ptr(::X,char)>::type, int>::value));
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VERIFY((is_same<result_of<mem_func_ptr_c(::X,char)>::type, int>::value));
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VERIFY((is_same<result_of<mem_func_ptr_v(::X,char)>::type, int>::value));
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VERIFY((is_same<result_of<mem_func_ptr_cv(::X,char)>::type, int>::value));
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}
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int main()
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{
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test01();
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return 0;
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}
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