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52066eae | 1 | // { dg-do run { target c++11 } } |
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2 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
3 | // | |
a5544970 | 4 | // Copyright (C) 2005-2019 Free Software Foundation, Inc. |
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5 | // |
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) | |
10 | // any later version. | |
11 | // | |
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. | |
16 | // | |
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/>. | |
20 | ||
21 | // 20.7.15 polymorphic function object wrapper | |
22 | #include <functional> | |
23 | #include <testsuite_hooks.h> | |
24 | #include <testsuite_tr1.h> | |
25 | ||
26 | using namespace __gnu_test; | |
27 | ||
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28 | // Put function objects into function<> wrappers |
29 | void test04() | |
30 | { | |
31 | using std::function; | |
32 | ||
33 | do_truncate_float_t truncate_float; | |
34 | ||
35 | function<int(float)> f1(truncate_float); | |
36 | VERIFY( f1 ); | |
37 | VERIFY( !!f1 ); | |
38 | VERIFY( !(f1 == 0) ); | |
39 | VERIFY( !(0 == f1) ); | |
40 | VERIFY( f1 != 0 ); | |
41 | VERIFY( 0 != f1 ); | |
42 | ||
43 | // Copy-construction | |
44 | function<int(float)> f2(f1); | |
45 | VERIFY( f2 ); | |
46 | ||
47 | // Invocation | |
48 | VERIFY( f1(3.1f) == 3 ); | |
49 | VERIFY( f2(3.1f) == 3 ); | |
50 | ||
51 | // Assignment to zero | |
52 | f1 = 0; | |
53 | VERIFY( !f1 ); | |
54 | ||
55 | // Swap | |
56 | f1.swap(f2); | |
57 | VERIFY( f1 ); | |
58 | VERIFY( !f2 ); | |
59 | VERIFY( f1(3.1f) == 3 ); | |
60 | ||
61 | // Assignment from a function pointer | |
62 | f2 = do_truncate_float_t(); | |
63 | VERIFY( f2(3.1f) == 3 ); | |
64 | ||
65 | // target_type and target() functions | |
66 | const function<int(float)>& f1c = f1; | |
67 | VERIFY( typeid(do_truncate_float_t) == f1.target_type() ); | |
68 | VERIFY( f2.target<do_truncate_float_t>() != 0 ); | |
69 | VERIFY( f1c.target<do_truncate_float_t>() != 0 ); | |
70 | } | |
71 | ||
72 | int main() | |
73 | { | |
74 | test04(); | |
75 | ||
76 | VERIFY( do_truncate_double_t::live_objects == 0 ); | |
77 | VERIFY( do_truncate_float_t::live_objects == 0 ); | |
78 | ||
79 | return 0; | |
80 | } |