projects / thirdparty / gcc.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
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28 | // Put nearly-matching function pointers into function<> wrappers |
| 29 | void test03() | |
| 30 | { | |
| 31 | using std::function; | |
| 32 | ||
| 33 | function<int(float)> f1(truncate_double); | |
| 34 | VERIFY( f1 ); | |
| 35 | VERIFY( !!f1 ); | |
| 36 | VERIFY( !(f1 == 0) ); | |
| 37 | VERIFY( !(0 == f1) ); | |
| 38 | VERIFY( f1 != 0 ); | |
| 39 | VERIFY( 0 != f1 ); | |
| 40 | ||
| 41 | // Copy-construction | |
| 42 | function<int(float)> f2(f1); | |
| 43 | VERIFY( f2 ); | |
| 44 | ||
| 45 | // Invocation | |
| 46 | VERIFY( f1(3.1f) == 3 ); | |
| 47 | VERIFY( f2(3.1f) == 3 ); | |
| 48 | ||
| 49 | // Assignment to zero | |
| 50 | f1 = 0; | |
| 51 | VERIFY( !f1 ); | |
| 52 | ||
| 53 | // Swap | |
| 54 | f1.swap(f2); | |
| 55 | VERIFY( f1 ); | |
| 56 | VERIFY( !f2 ); | |
| 57 | VERIFY( f1(3.1f) == 3 ); | |
| 58 | ||
| 59 | // Assignment from a function pointer | |
| 60 | f2 = truncate_double; | |
| 61 | VERIFY( f2(3.1f) == 3 ); | |
| 62 | ||
| 63 | // target_type and target() functions | |
| 64 | const function<int(float)>& f1c = f1; | |
| 65 | VERIFY( typeid(long(*)(double)) == f1.target_type() ); | |
| 66 | VERIFY( f2.target<long(*)(double)>() != 0 ); | |
| 67 | VERIFY( *f2.target<long(*)(double)>() == &truncate_double ); | |
| 68 | VERIFY( f1c.target<long(*)(double)>() != 0 ); | |
| 69 | VERIFY( *f1c.target<long(*)(double)>() == &truncate_double ); | |
| 70 | } | |
| 71 | ||
| 72 | int main() | |
| 73 | { | |
| 74 | test03(); | |
| 75 | return 0; | |
| 76 | } |