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a945c346 | 1 | // Copyright (C) 2020-2024 Free Software Foundation, Inc. |
bc464641 PP |
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 | ||
7dbb6913 | 18 | // { dg-do run { target c++20 } } |
bc464641 PP |
19 | // { dg-require-cstdint "" } |
20 | ||
21 | #include <algorithm> | |
22 | #include <random> | |
23 | #include <vector> | |
24 | #include <testsuite_hooks.h> | |
25 | #include <testsuite_iterators.h> | |
26 | ||
27 | using __gnu_test::test_container; | |
28 | using __gnu_test::test_range; | |
29 | using __gnu_test::input_iterator_wrapper; | |
30 | using __gnu_test::output_iterator_wrapper; | |
31 | using __gnu_test::forward_iterator_wrapper; | |
32 | ||
33 | namespace ranges = std::ranges; | |
34 | ||
35 | void | |
36 | test01() | |
37 | { | |
38 | int x[] = {4,2,1,1,0}; | |
39 | int y[] = {3,2,2,1}; | |
40 | int z[5]; | |
41 | test_range<int, input_iterator_wrapper> rx(x), ry(y); | |
42 | test_range<int, output_iterator_wrapper> rz(z); | |
43 | auto [in1,in2,out] | |
44 | = ranges::set_symmetric_difference(rx, ry, rz.begin(), ranges::greater{}); | |
45 | VERIFY( in1.ptr == x+5 ); | |
46 | VERIFY( in2.ptr == y+4 ); | |
47 | VERIFY( out.ptr == z+5 ); | |
48 | VERIFY( ranges::equal(z, (int[]){4,3,2,1,0}) ); | |
49 | } | |
50 | ||
51 | void | |
52 | test02() | |
53 | { | |
54 | int x[] = {3,2,1,1,0}; | |
55 | int y[] = {3,2,1,0}; | |
56 | int z[1]; | |
57 | test_container<int, forward_iterator_wrapper> rx(x), ry(y); | |
58 | test_container<int, forward_iterator_wrapper> rz(z); | |
59 | auto [in1,in2,out] | |
60 | = ranges::set_symmetric_difference(rx.begin(), rx.end(), | |
61 | ry.begin(), ry.end(), | |
62 | rz.begin(), | |
63 | {}, | |
64 | std::negate<>{}, | |
65 | std::negate<>{}); | |
66 | VERIFY( in1.ptr == x+5 ); | |
67 | VERIFY( in2.ptr == y+4 ); | |
68 | VERIFY( out.ptr == z+1 ); | |
69 | VERIFY( ranges::equal(z, (int[]){1}) ); | |
70 | } | |
71 | ||
72 | constexpr bool | |
73 | test03() | |
74 | { | |
75 | bool ok = true; | |
76 | int x[1] = {0}; | |
77 | int y[1] = {1}; | |
78 | int z[1]; | |
79 | ok &= ranges::set_symmetric_difference(x, x, y, y+1, z).out == z+1; | |
80 | ok &= z[0] == 1; | |
81 | ok &= ranges::set_symmetric_difference(x, x+1, y, y, z).out == z+1; | |
82 | ok &= z[0] == 0; | |
83 | return ok; | |
84 | } | |
85 | ||
86 | void | |
87 | test04() | |
88 | { | |
89 | int x[15] = {5,5,5,5,5,4,4,4,4,3,3,3,2,2,1}; | |
90 | int y[15] = {5,5,5,5,5,4,4,4,4,3,3,3,2,2,1}; | |
91 | for (int k = 0; k < 100; k++) | |
92 | { | |
93 | std::ranlux48_base g(k); | |
94 | ranges::shuffle(x, g); | |
95 | ranges::shuffle(y, g); | |
96 | ranges::sort(x, x+10); | |
97 | ranges::sort(y, y+10); | |
98 | ||
99 | int z[15]; | |
100 | auto z_out = ranges::set_symmetric_difference(x, x+10, y, y+10, z).out; | |
101 | ||
102 | int w1[15]; | |
103 | auto w1_out = ranges::set_difference(x, x+10, y, y+10, w1).out; | |
104 | ||
105 | int w2[15]; | |
106 | auto w2_out = ranges::set_difference(y, y+10, x, x+10, w2).out; | |
107 | ||
108 | int w3[15]; | |
109 | auto w3_out = ranges::set_union(w1, w1_out, w2, w2_out, w3).out; | |
110 | ||
111 | VERIFY( ranges::equal(z, z_out, w3, w3_out) ); | |
112 | } | |
113 | } | |
114 | ||
115 | int | |
116 | main() | |
117 | { | |
118 | test01(); | |
119 | test02(); | |
120 | static_assert(test03()); | |
121 | test04(); | |
122 | } |