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8d9254fc | 1 | // Copyright (C) 2016-2020 Free Software Foundation, Inc. |
3ebacabd JW |
2 | // |
3 | // This file is part of the GNU ISO C++ Library. This library is free | |
4 | // software; you can redistribute it and/or modify it under the | |
5 | // terms of the GNU General Public License as published by the | |
6 | // Free Software Foundation; either version 3, or (at your option) | |
7 | // any later version. | |
8 | ||
9 | // This library is distributed in the hope that it will be useful, | |
10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | // GNU General Public License for more details. | |
13 | ||
14 | // You should have received a copy of the GNU General Public License along | |
15 | // with this library; see the file COPYING3. If not see | |
16 | // <http://www.gnu.org/licenses/>. | |
17 | ||
52066eae JW |
18 | // { dg-options "-D_GLIBCXX_DEBUG" } |
19 | // { dg-do run { target c++11 } } | |
61e619b4 | 20 | // { dg-skip-if "" { *-*-* } { "-D_GLIBCXX_PARALLEL" } } |
3ebacabd JW |
21 | |
22 | #include <algorithm> | |
23 | #include <functional> | |
24 | #include <testsuite_iterators.h> | |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | using __gnu_test::test_container; | |
28 | using __gnu_test::forward_iterator_wrapper; | |
29 | ||
30 | struct X | |
31 | { | |
32 | int val; | |
33 | ||
34 | bool odd() const { return val % 2; } | |
35 | ||
36 | // Partitioned so that all odd values come before even values: | |
37 | bool operator<(const X& x) const { return this->odd() && !x.odd(); } | |
38 | }; | |
39 | ||
40 | void | |
41 | test01() | |
42 | { | |
3ebacabd JW |
43 | // Test with range that is partitioned, but not sorted. |
44 | X seq[] = { 1, 3, 5, 7, 1, 6, 4, 2 }; | |
45 | test_container<X, forward_iterator_wrapper> c(seq); | |
46 | ||
47 | auto part1 = std::equal_range(c.begin(), c.end(), X{2}); | |
48 | VERIFY( part1.first != c.end() && part1.second == c.end() ); | |
49 | VERIFY( part1.first->val == 6 ); | |
50 | auto part2 = std::equal_range(c.begin(), c.end(), X{2}, std::less<X>{}); | |
51 | VERIFY( part2.first != c.end() && part1.second == c.end() ); | |
52 | VERIFY( part2.first->val == 6 ); | |
53 | ||
54 | auto part3 = std::equal_range(c.begin(), c.end(), X{9}); | |
55 | VERIFY( part3.first == c.begin() && part3.second != c.end() ); | |
56 | VERIFY( part3.second->val == 6 ); | |
57 | auto part4 = std::equal_range(c.begin(), c.end(), X{9}, std::less<X>{}); | |
58 | VERIFY( part4.first == c.begin() && part4.second != c.end() ); | |
59 | VERIFY( part4.second->val == 6 ); | |
60 | } | |
61 | ||
62 | int | |
63 | main() | |
64 | { | |
65 | test01(); | |
66 | } |