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1 | // 2005-01-15 Douglas Gregor <dgregor@cs.indiana.edu> |
2 | // | |
83ffe9cd | 3 | // Copyright (C) 2005-2023 Free Software Foundation, Inc. |
0179f2c6 DG |
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 | |
748086b7 | 8 | // Free Software Foundation; either version 3, or (at your option) |
0179f2c6 DG |
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 | |
748086b7 JJ |
17 | // with this library; see the file COPYING3. If not see |
18 | // <http://www.gnu.org/licenses/>. | |
0179f2c6 DG |
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 | ||
0179f2c6 DG |
27 | // Put reference_wrappers to function pointers into function<> wrappers |
28 | void test07() | |
29 | { | |
30 | using std::tr1::function; | |
31 | using std::tr1::ref; | |
32 | using std::tr1::cref; | |
33 | ||
34 | int (*fptr)(float) = truncate_float; | |
35 | ||
36 | function<int(float)> f1(ref(fptr)); | |
37 | VERIFY( f1 ); | |
38 | VERIFY( !!f1 ); | |
39 | VERIFY( !(f1 == 0) ); | |
40 | VERIFY( !(0 == f1) ); | |
41 | VERIFY( f1 != 0 ); | |
42 | VERIFY( 0 != f1 ); | |
43 | ||
44 | // Invocation | |
45 | VERIFY( f1(3.1f) == 3 ); | |
46 | ||
b6b66006 | 47 | #if __cpp_rtti |
0179f2c6 DG |
48 | // target_type and target() functions |
49 | const function<int(float)>& f1c = f1; | |
50 | VERIFY( typeid(int(*)(float)) == f1.target_type() ); | |
51 | VERIFY( f1.target<int(*)(float)>() != 0 ); | |
52 | VERIFY( f1.target<int(*)(float)>() == &fptr ); | |
53 | VERIFY( f1c.target<int(*)(float)>() != 0 ); | |
54 | VERIFY( f1c.target<int(*)(float)>() == &fptr ); | |
b6b66006 | 55 | #endif |
0179f2c6 DG |
56 | |
57 | function<int(float)> f2(cref(fptr)); | |
58 | VERIFY( f2 ); | |
59 | VERIFY( !!f2 ); | |
60 | VERIFY( !(f2 == 0) ); | |
61 | VERIFY( !(0 == f2) ); | |
62 | VERIFY( f2 != 0 ); | |
63 | VERIFY( 0 != f2 ); | |
64 | ||
65 | // Invocation | |
66 | VERIFY( f2(3.1f) == 3 ); | |
67 | ||
b6b66006 | 68 | #if __cpp_rtti |
0179f2c6 DG |
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 ); | |
b6b66006 | 76 | #endif |
0179f2c6 DG |
77 | } |
78 | ||
79 | int main() | |
80 | { | |
81 | test07(); | |
82 | return 0; | |
83 | } |