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jlechner |
// 2005-02-27 Douglas Gregor <doug.gregor -at- gmail.com>
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//
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// Copyright (C) 2005 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 2, 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 COPYING. If not, write to the Free
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// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
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// USA.
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// 2.1 reference wrappers
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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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using namespace __gnu_test;
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struct X {};
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struct int_result_type { typedef int result_type; };
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struct derives_unary : std::unary_function<int, int> {};
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struct derives_binary : std::binary_function<int, float, int> {};
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struct derives_unary_binary
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: std::unary_function<int, int>,
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std::binary_function<int, float, int>
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{
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typedef int result_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::reference_wrapper;
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using std::tr1::is_same;
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using std::tr1::is_convertible;
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using std::unary_function;
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using std::binary_function;
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// Check result_type typedef
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VERIFY((is_same<reference_wrapper<int_result_type>::result_type, int>::value));
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VERIFY((is_same<reference_wrapper<derives_unary>::result_type, int>::value));
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VERIFY((is_same<reference_wrapper<derives_binary>::result_type, int>::value));
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VERIFY((is_same<reference_wrapper<derives_unary_binary>::result_type, int>::value));
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VERIFY((is_same<reference_wrapper<int(void)>::result_type, int>::value));
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VERIFY((is_same<reference_wrapper<int(*)(void)>::result_type, int>::value));
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VERIFY((is_same<reference_wrapper<int (::X::*)()>::result_type, int>::value));
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VERIFY((is_same<reference_wrapper<int (::X::*)(float)>::result_type, int>::value));
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// Check derivation from unary_function
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VERIFY((is_convertible<reference_wrapper<derives_unary>*, unary_function<int, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<derives_unary_binary>*, unary_function<int, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int(int)>*, unary_function<int, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int(*)(int)>*, unary_function<int, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)()>*, unary_function< ::X*, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)() const>*, unary_function<const ::X*, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)() volatile>*, unary_function<volatile ::X*, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)() const volatile>*, unary_function<const volatile ::X*, int>*>::value));
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// Check derivation from binary_function
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VERIFY((is_convertible<reference_wrapper<derives_binary>*, binary_function<int, float, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<derives_unary_binary>*, binary_function<int, float, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int(int, float)>*, binary_function<int, float, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int(*)(int, float)>*, binary_function<int, float, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)(float)>*, binary_function< ::X*, float, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)(float) const>*, binary_function<const ::X*, float, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)(float) volatile>*, binary_function<volatile ::X*, float, int>*>::value));
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VERIFY((is_convertible<reference_wrapper<int (::X::*)(float) const volatile>*, binary_function<const volatile ::X*, float, 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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