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// { dg-options "-std=gnu++0x" }
// 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
//
// Copyright (C) 2005, 2009 Free Software Foundation, Inc.
//
// This file is part of the GNU ISO C++ Library. This library is free
// software; you can redistribute it and/or modify it under the
// terms of the GNU General Public License as published by the
// Free Software Foundation; either version 3, or (at your option)
// any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License along
// with this library; see the file COPYING3. If not see
// <http://www.gnu.org/licenses/>.
// 20.7.15 polymorphic function object wrapper
#include <functional>
#include <testsuite_hooks.h>
#include <testsuite_tr1.h>
using namespace __gnu_test;
bool test __attribute__((unused)) = true;
// Put reference_wrappers to function pointers into function<> wrappers
void test07()
{
using std::function;
using std::ref;
using std::cref;
int (*fptr)(float) = truncate_float;
function<int(float)> f1(ref(fptr));
VERIFY( f1 );
VERIFY( !!f1 );
VERIFY( !(f1 == 0) );
VERIFY( !(0 == f1) );
VERIFY( f1 != 0 );
VERIFY( 0 != f1 );
// Invocation
VERIFY( f1(3.1f) == 3 );
// target_type and target() functions
const function<int(float)>& f1c = f1;
VERIFY( typeid(int(*)(float)) == f1.target_type() );
VERIFY( f1.target<int(*)(float)>() != 0 );
VERIFY( f1.target<int(*)(float)>() == &fptr );
VERIFY( f1c.target<int(*)(float)>() != 0 );
VERIFY( f1c.target<int(*)(float)>() == &fptr );
function<int(float)> f2(cref(fptr));
VERIFY( f2 );
VERIFY( !!f2 );
VERIFY( !(f2 == 0) );
VERIFY( !(0 == f2) );
VERIFY( f2 != 0 );
VERIFY( 0 != f2 );
// Invocation
VERIFY( f2(3.1f) == 3 );
// target_type and target() functions
const function<int(float)>& f2c = f2;
VERIFY( typeid(int(*)(float)) == f2.target_type() );
VERIFY( f2.target<int(*)(float)>() == 0 );
VERIFY( f2.target<int(* const)(float)>() == &fptr );
VERIFY( f2c.target<int(*)(float)>() != 0 );
VERIFY( f2c.target<int(*)(float)>() == &fptr );
}
int main()
{
test07();
return 0;
}
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