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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 | // | |
818ab71a | 4 | // Copyright (C) 2005-2016 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 | ||
28 | bool test __attribute__((unused)) = true; | |
29 | ||
30 | // Put reference_wrappers to function pointers into function<> wrappers | |
31 | void test07() | |
32 | { | |
33 | using std::function; | |
34 | using std::ref; | |
35 | using std::cref; | |
36 | ||
37 | int (*fptr)(float) = truncate_float; | |
38 | ||
39 | function<int(float)> f1(ref(fptr)); | |
40 | VERIFY( f1 ); | |
41 | VERIFY( !!f1 ); | |
42 | VERIFY( !(f1 == 0) ); | |
43 | VERIFY( !(0 == f1) ); | |
44 | VERIFY( f1 != 0 ); | |
45 | VERIFY( 0 != f1 ); | |
46 | ||
47 | // Invocation | |
48 | VERIFY( f1(3.1f) == 3 ); | |
49 | ||
50 | // target_type and target() functions | |
51 | const function<int(float)>& f1c = f1; | |
52 | VERIFY( typeid(int(*)(float)) == f1.target_type() ); | |
53 | VERIFY( f1.target<int(*)(float)>() != 0 ); | |
54 | VERIFY( f1.target<int(*)(float)>() == &fptr ); | |
55 | VERIFY( f1c.target<int(*)(float)>() != 0 ); | |
56 | VERIFY( f1c.target<int(*)(float)>() == &fptr ); | |
57 | ||
58 | function<int(float)> f2(cref(fptr)); | |
59 | VERIFY( f2 ); | |
60 | VERIFY( !!f2 ); | |
61 | VERIFY( !(f2 == 0) ); | |
62 | VERIFY( !(0 == f2) ); | |
63 | VERIFY( f2 != 0 ); | |
64 | VERIFY( 0 != f2 ); | |
65 | ||
66 | // Invocation | |
67 | VERIFY( f2(3.1f) == 3 ); | |
68 | ||
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 ); | |
76 | } | |
77 | ||
78 | int main() | |
79 | { | |
80 | test07(); | |
81 | return 0; | |
82 | } |