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79a95346 | 1 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
2 | // | |
f1717362 | 3 | // Copyright (C) 2005-2016 Free Software Foundation, Inc. |
79a95346 | 4 | // |
5 | // This file is part of the GNU ISO C++ Library. This library is free | |
6 | // software; you can redistribute it and/or modify it under the | |
7 | // terms of the GNU General Public License as published by the | |
6bc9506f | 8 | // Free Software Foundation; either version 3, or (at your option) |
79a95346 | 9 | // any later version. |
10 | // | |
11 | // This library is distributed in the hope that it will be useful, | |
12 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | // GNU General Public License for more details. | |
15 | // | |
16 | // You should have received a copy of the GNU General Public License along | |
6bc9506f | 17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
79a95346 | 19 | |
20 | // 3.7.2 polymorphic function object wrapper | |
21 | #include <tr1/functional> | |
22 | #include <testsuite_hooks.h> | |
23 | #include <testsuite_tr1.h> | |
24 | ||
25 | using namespace __gnu_test; | |
26 | ||
27 | bool test __attribute__((unused)) = true; | |
28 | ||
29 | // Put function objects into function<> wrappers | |
30 | void test04() | |
31 | { | |
32 | using std::tr1::function; | |
33 | ||
34 | do_truncate_float_t truncate_float; | |
35 | ||
36 | function<int(float)> f1(truncate_float); | |
37 | VERIFY( f1 ); | |
38 | VERIFY( !!f1 ); | |
39 | VERIFY( !(f1 == 0) ); | |
40 | VERIFY( !(0 == f1) ); | |
41 | VERIFY( f1 != 0 ); | |
42 | VERIFY( 0 != f1 ); | |
43 | ||
44 | // Copy-construction | |
45 | function<int(float)> f2(f1); | |
46 | VERIFY( f2 ); | |
47 | ||
48 | // Invocation | |
49 | VERIFY( f1(3.1f) == 3 ); | |
50 | VERIFY( f2(3.1f) == 3 ); | |
51 | ||
52 | // Assignment to zero | |
53 | f1 = 0; | |
54 | VERIFY( !f1 ); | |
55 | ||
56 | // Swap | |
57 | f1.swap(f2); | |
58 | VERIFY( f1 ); | |
59 | VERIFY( !f2 ); | |
60 | VERIFY( f1(3.1f) == 3 ); | |
61 | ||
62 | // Assignment from a function pointer | |
63 | f2 = do_truncate_float_t(); | |
64 | VERIFY( f2(3.1f) == 3 ); | |
65 | ||
66 | // target_type and target() functions | |
67 | const function<int(float)>& f1c = f1; | |
68 | VERIFY( typeid(do_truncate_float_t) == f1.target_type() ); | |
69 | VERIFY( f2.target<do_truncate_float_t>() != 0 ); | |
70 | VERIFY( f1c.target<do_truncate_float_t>() != 0 ); | |
71 | } | |
72 | ||
73 | int main() | |
74 | { | |
75 | test04(); | |
76 | ||
77 | VERIFY( do_truncate_double_t::live_objects == 0 ); | |
78 | VERIFY( do_truncate_float_t::live_objects == 0 ); | |
79 | ||
80 | return 0; | |
81 | } |