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52066eae | 1 | // { dg-do run { target c++11 } } |
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2 | // { dg-require-effective-target hosted } |
3 | ||
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4 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
5 | // | |
a945c346 | 6 | // Copyright (C) 2005-2024 Free Software Foundation, Inc. |
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7 | // |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
11 | // Free Software Foundation; either version 3, or (at your option) | |
12 | // any later version. | |
13 | // | |
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | // | |
19 | // You should have received a copy of the GNU General Public License along | |
20 | // with this library; see the file COPYING3. If not see | |
21 | // <http://www.gnu.org/licenses/>. | |
22 | ||
23 | // 20.7.15 polymorphic function object wrapper | |
24 | #include <functional> | |
25 | #include <testsuite_hooks.h> | |
26 | #include <testsuite_tr1.h> | |
27 | ||
28 | using namespace __gnu_test; | |
29 | ||
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30 | // Put nearly-matching function pointers into function<> wrappers |
31 | void test03() | |
32 | { | |
33 | using std::function; | |
34 | ||
35 | function<int(float)> f1(truncate_double); | |
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 = truncate_double; | |
63 | VERIFY( f2(3.1f) == 3 ); | |
64 | ||
65 | // target_type and target() functions | |
66 | const function<int(float)>& f1c = f1; | |
b6b66006 | 67 | #if __cpp_rtti |
7aec2c63 | 68 | VERIFY( typeid(long(*)(double)) == f1.target_type() ); |
b6b66006 | 69 | #endif |
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70 | VERIFY( f2.target<long(*)(double)>() != 0 ); |
71 | VERIFY( *f2.target<long(*)(double)>() == &truncate_double ); | |
72 | VERIFY( f1c.target<long(*)(double)>() != 0 ); | |
73 | VERIFY( *f1c.target<long(*)(double)>() == &truncate_double ); | |
74 | } | |
75 | ||
76 | int main() | |
77 | { | |
78 | test03(); | |
79 | return 0; | |
80 | } |