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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/function/3.cc
8739248134a28e203b220396d7ef2dadbab1f6c4
1 // { dg-do run { target c++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 nearly-matching function pointers into function<> wrappers
35 function
<int(float)> f1(truncate_double
);
44 function
<int(float)> f2(f1
);
48 VERIFY( f1(3.1f
) == 3 );
49 VERIFY( f2(3.1f
) == 3 );
59 VERIFY( f1(3.1f
) == 3 );
61 // Assignment from a function pointer
63 VERIFY( f2(3.1f
) == 3 );
65 // target_type and target() functions
66 const function
<int(float)>& f1c
= f1
;
67 VERIFY( typeid(long(*)(double)) == f1
.target_type() );
68 VERIFY( f2
.target
<long(*)(double)>() != 0 );
69 VERIFY( *f2
.target
<long(*)(double)>() == &truncate_double
);
70 VERIFY( f1c
.target
<long(*)(double)>() != 0 );
71 VERIFY( *f1c
.target
<long(*)(double)>() == &truncate_double
);