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a945c346 | 1 | // Copyright (C) 2005-2024 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 | |
748086b7 | 6 | // Free Software Foundation; either version 3, or (at your option) |
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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 | |
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15 | // with this library; see the file COPYING3. If not see |
16 | // <http://www.gnu.org/licenses/>. | |
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17 | |
18 | // 25.3.4 [lib.alg.merge] | |
19 | ||
20 | #include <algorithm> | |
21 | #include <testsuite_hooks.h> | |
22 | #include <testsuite_iterators.h> | |
23 | ||
24 | using __gnu_test::test_container; | |
25 | using __gnu_test::input_iterator_wrapper; | |
26 | using __gnu_test::output_iterator_wrapper; | |
27 | using std::merge; | |
28 | ||
29 | typedef test_container<int, input_iterator_wrapper> Icontainer; | |
30 | typedef test_container<int, output_iterator_wrapper> Ocontainer; | |
31 | ||
32 | void | |
33 | test1() | |
34 | { | |
35 | int array1[1], array2[1]; | |
36 | Icontainer con1(array1, array1); | |
37 | Icontainer con2(array1, array1); | |
38 | Ocontainer con3(array2, array2); | |
39 | VERIFY(merge(con1.begin(), con1.end(), con2.begin(), con2.end(), | |
40 | con3.begin()).ptr == array2); | |
41 | } | |
42 | ||
43 | void | |
44 | test2() | |
45 | { | |
46 | int array1[]={0,1,4}; | |
47 | int array2[]={2,3}; | |
48 | int array3[5]; | |
49 | Icontainer con1(array1, array1 + 3); | |
50 | Icontainer con2(array2, array2 + 2); | |
51 | Ocontainer con3(array3, array3 + 5); | |
52 | VERIFY(merge(con1.begin(), con1.end(), con2.begin(), con2.end(), | |
53 | con3.begin()).ptr == array3 + 5); | |
54 | VERIFY(array3[0] == 0 && array3[1] == 1 && array3[2] == 2 && | |
55 | array3[3] == 3 && array3[4] == 4); | |
56 | ||
57 | } | |
58 | ||
59 | struct S | |
60 | { | |
61 | int i; | |
62 | int j; | |
63 | S() {} | |
64 | S(int in) | |
65 | { | |
66 | if(in > 0) | |
67 | { | |
68 | i = in; | |
69 | j = 1; | |
70 | } | |
71 | else | |
72 | { | |
73 | i = -in; | |
74 | j = 0; | |
75 | } | |
76 | } | |
77 | }; | |
78 | ||
79 | bool | |
80 | operator<(const S& s1, const S& s2) | |
81 | { return s1.i < s2.i; } | |
82 | ||
83 | void | |
84 | test3() | |
85 | { | |
86 | S array1[] = { -1 , -3}; | |
87 | S array2[] = { 1, 2, 3}; | |
88 | S array3[5]; | |
89 | merge(array1, array1 + 2, array2, array2 + 3, array3); | |
90 | VERIFY(array3[0].j == 0 && array3[1].j == 1 && array3[2].j == 1 && | |
91 | array3[3].j == 0 && array3[4].j == 1); | |
92 | } | |
93 | ||
94 | int | |
95 | main() | |
96 | { | |
97 | test1(); | |
98 | test2(); | |
99 | test3(); | |
100 | } |