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99dee823 | 1 | // Copyright (C) 2001-2021 Free Software Foundation, Inc. |
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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, | |
2328b1de | 10 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
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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 | ||
18 | // 23.2.2.4 list operations [lib.list.ops] | |
19 | ||
20 | #include <testsuite_hooks.h> | |
21 | ||
22 | // A comparison predicate to order by rightmost digit. Tracks call | |
23 | // counts for performance checks. | |
24 | struct CompLastLt | |
25 | { | |
26 | bool operator()(const int x, const int y) | |
27 | { ++itsCount; return x % 10 < y % 10; } | |
28 | static int count() { return itsCount; } | |
29 | static void reset() { itsCount = 0; } | |
30 | static int itsCount; | |
31 | }; | |
32 | ||
33 | int CompLastLt::itsCount; | |
34 | ||
35 | struct CompLastEq | |
36 | { | |
37 | bool operator()(const int x, const int y) | |
38 | { ++itsCount; return x % 10 == y % 10; } | |
39 | static int count() { return itsCount; } | |
40 | static void reset() { itsCount = 0; } | |
41 | static int itsCount; | |
42 | }; | |
43 | ||
44 | int CompLastEq::itsCount; | |
45 | ||
46 | // sort(pred) + merge(pred) + unique(pred) | |
47 | // also checks performance requirements | |
48 | template<typename _Tp> | |
49 | void | |
50 | operations04() | |
51 | { | |
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52 | typedef _Tp list_type; |
53 | ||
54 | const int A[] = {1, 2, 3, 4, 5, 6}; | |
55 | const int B[] = {12, 15, 13, 14, 11}; | |
56 | const int C[] = {11, 12, 13, 14, 15}; | |
57 | const int D[] = {1, 11, 2, 12, 3, 13, 4, 14, 5, 15, 6}; | |
58 | const int N = sizeof(A) / sizeof(int); | |
59 | const int M = sizeof(B) / sizeof(int); | |
60 | const int Q = sizeof(D) / sizeof(int); | |
61 | ||
62 | list_type list0401(A, A + N); | |
63 | list_type list0402(B, B + M); | |
64 | list_type list0403(C, C + M); | |
65 | list_type list0404(D, D + Q); | |
66 | list_type list0405(A, A + N); | |
67 | ||
68 | // sort B | |
69 | CompLastLt lt; | |
70 | ||
71 | CompLastLt::reset(); | |
72 | list0402.sort(lt); | |
73 | VERIFY(list0402 == list0403); | |
74 | ||
75 | CompLastLt::reset(); | |
76 | list0401.merge(list0402, lt); | |
77 | VERIFY(list0401 == list0404); | |
78 | #ifndef _GLIBCXX_DEBUG | |
79 | VERIFY(lt.count() <= (N + M - 1)); | |
80 | #endif | |
81 | ||
82 | CompLastEq eq; | |
83 | ||
84 | CompLastEq::reset(); | |
85 | list0401.unique(eq); | |
86 | VERIFY(list0401 == list0405); | |
87 | #ifndef _GLIBCXX_DEBUG | |
88 | VERIFY(eq.count() == (N + M - 1)); | |
89 | #endif | |
90 | } | |
91 |