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83ffe9cd | 1 | // Copyright (C) 2020-2023 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 | ||
18 | // { dg-options "-std=gnu++2a" } | |
19 | // { dg-do run { target c++2a } } | |
20 | ||
21 | #include <algorithm> | |
ac73c944 | 22 | #include <functional> |
bc464641 PP |
23 | #include <testsuite_hooks.h> |
24 | #include <testsuite_iterators.h> | |
25 | ||
26 | using __gnu_test::test_container; | |
27 | using __gnu_test::test_range; | |
28 | using __gnu_test::input_iterator_wrapper; | |
29 | using __gnu_test::output_iterator_wrapper; | |
30 | using __gnu_test::forward_iterator_wrapper; | |
31 | ||
32 | namespace ranges = std::ranges; | |
33 | ||
34 | void | |
35 | test01() | |
36 | { | |
37 | int x[] = {4,2,1,1,0}; | |
38 | int y[] = {3,2,1}; | |
39 | int z[6]; | |
40 | test_range<int, input_iterator_wrapper> rx(x), ry(y); | |
41 | test_range<int, output_iterator_wrapper> rz(z); | |
42 | auto [in1,in2,out] | |
43 | = ranges::set_union(rx, ry, rz.begin(), | |
44 | ranges::greater{}); | |
45 | VERIFY( in1.ptr == x+5 ); | |
46 | VERIFY( in2.ptr == y+3 ); | |
47 | VERIFY( out.ptr == z+6 ); | |
48 | VERIFY( ranges::equal(z, (int[]){4,3,2,1,1,0}) ); | |
49 | } | |
50 | ||
51 | void | |
52 | test02() | |
53 | { | |
54 | int x[] = {4,2,1,1,0}; | |
55 | int y[] = {3,2,1,1,0}; | |
56 | int z[6]; | |
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_union(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+5 ); | |
68 | VERIFY( out.ptr == z+6 ); | |
69 | VERIFY( ranges::equal(z, (int[]){4,3,2,1,1,0}) ); | |
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 | ranges::set_union(x, x, y, y+1, z); | |
80 | ok &= z[0] == 1; | |
81 | ranges::set_union(x, x+1, y, y, z); | |
82 | ok &= z[0] == 0; | |
83 | return ok; | |
84 | } | |
85 | ||
86 | int | |
87 | main() | |
88 | { | |
89 | test01(); | |
90 | test02(); | |
91 | static_assert(test03()); | |
92 | } |