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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/function/7.cc
1 // { dg-options "-std=gnu++11" }
2 // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu>
4 // Copyright (C) 2005-2016 Free Software Foundation, Inc.
6 // This file is part of the GNU ISO C++ Library. This library is free
7 // software; you can redistribute it and/or modify it under the
8 // terms of the GNU General Public License as published by the
9 // Free Software Foundation; either version 3, or (at your option)
12 // This library is distributed in the hope that it will be useful,
13 // but WITHOUT ANY WARRANTY; without even the implied warranty of
14 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 // GNU General Public License for more details.
17 // You should have received a copy of the GNU General Public License along
18 // with this library; see the file COPYING3. If not see
19 // <http://www.gnu.org/licenses/>.
21 // 20.7.15 polymorphic function object wrapper
23 #include <testsuite_hooks.h>
24 #include <testsuite_tr1.h>
26 using namespace __gnu_test
;
28 bool test
__attribute__((unused
)) = true;
30 // Put reference_wrappers to function pointers into function<> wrappers
37 int (*fptr
)(float) = truncate_float
;
39 function
<int(float)> f1(ref(fptr
));
48 VERIFY( f1(3.1f
) == 3 );
50 // target_type and target() functions
51 const function
<int(float)>& f1c
= f1
;
52 VERIFY( typeid(int(*)(float)) == f1
.target_type() );
53 VERIFY( f1
.target
<int(*)(float)>() != 0 );
54 VERIFY( f1
.target
<int(*)(float)>() == &fptr
);
55 VERIFY( f1c
.target
<int(*)(float)>() != 0 );
56 VERIFY( f1c
.target
<int(*)(float)>() == &fptr
);
58 function
<int(float)> f2(cref(fptr
));
67 VERIFY( f2(3.1f
) == 3 );
69 // target_type and target() functions
70 const function
<int(float)>& f2c
= f2
;
71 VERIFY( typeid(int(*)(float)) == f2
.target_type() );
72 VERIFY( f2
.target
<int(*)(float)>() == 0 );
73 VERIFY( f2
.target
<int(* const)(float)>() == &fptr
);
74 VERIFY( f2c
.target
<int(*)(float)>() != 0 );
75 VERIFY( f2c
.target
<int(*)(float)>() == &fptr
);