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ed920373 JW |
1 | // { dg-options "-std=gnu++17" } |
2 | // { dg-do run { target c++17 } } | |
3 | ||
8d9254fc | 4 | // Copyright (C) 2019-2020 Free Software Foundation, Inc. |
ed920373 JW |
5 | // |
6 | // This file is part of the GNU ISO C++ Library. This library is free | |
7 | // software; you can redistribute it and/or modify it under the | |
8 | // terms of the GNU General Public License as published by the | |
9 | // Free Software Foundation; either version 3, or (at your option) | |
10 | // any later version. | |
11 | ||
12 | // This library is distributed in the hope that it will be useful, | |
13 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | // GNU General Public License for more details. | |
16 | ||
17 | // You should have received a copy of the GNU General Public License along | |
18 | // with this library; see the file COPYING3. If not see | |
19 | // <http://www.gnu.org/licenses/>. | |
20 | ||
21 | // C++17 29.8.7 [exclusive.scan] | |
22 | ||
23 | #include <numeric> | |
24 | #include <iterator> | |
25 | #include <testsuite_hooks.h> | |
26 | #include <testsuite_iterators.h> | |
27 | ||
28 | int a[] = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; | |
29 | ||
30 | using __gnu_test::test_container; | |
31 | using __gnu_test::input_iterator_wrapper; | |
32 | using __gnu_test::output_iterator_wrapper; | |
33 | ||
34 | /* | |
35 | template<class InputIterator, class OutputIterator, class T> | |
36 | OutputIterator | |
37 | exclusive_scan(InputIterator, InputIterator, OutputIterator, T); | |
38 | */ | |
39 | void | |
40 | test01() | |
41 | { | |
42 | int out[10]; | |
43 | test_container<int, output_iterator_wrapper> co(out); | |
44 | test_container<int, input_iterator_wrapper> ca(a); | |
45 | auto end = std::exclusive_scan(ca.begin(), ca.end(), co.begin(), 5); | |
46 | static_assert(std::is_same_v<decltype(end), decltype(co.begin())>); | |
47 | VERIFY( end.ptr == out+10 ); | |
48 | VERIFY( out[0] == 5 ); | |
49 | VERIFY( out[1] == 6 ); | |
50 | VERIFY( out[2] == 8 ); | |
51 | VERIFY( out[3] == 11 ); | |
52 | VERIFY( out[4] == 15 ); | |
53 | VERIFY( out[5] == 20 ); | |
54 | VERIFY( out[6] == 26 ); | |
55 | VERIFY( out[7] == 33 ); | |
56 | VERIFY( out[8] == 41 ); | |
57 | VERIFY( out[9] == 50 ); | |
58 | } | |
59 | ||
60 | /* | |
61 | template<class InputIterator, class OutputIterator, class T, | |
62 | class BinaryOperation> | |
63 | OutputIterator | |
64 | exclusive_scan(InputIterator, InputIterator, OutputIterator, T, | |
65 | BinaryOperation); | |
66 | */ | |
67 | void | |
68 | test02() | |
69 | { | |
70 | int out[10]; | |
71 | test_container<int, output_iterator_wrapper> co(out); | |
72 | test_container<int, input_iterator_wrapper> ca(a); | |
73 | auto end = std::exclusive_scan(ca.begin(), ca.end(), co.begin(), 2, | |
74 | [](int i, int j) { return 2*i + 2*j; }); | |
75 | static_assert(std::is_same_v<decltype(end), decltype(co.begin())>); | |
76 | VERIFY( end.ptr == out+10 ); | |
77 | VERIFY( out[0] == 2 ); | |
78 | VERIFY( out[1] == 6 ); | |
79 | VERIFY( out[2] == 16 ); | |
80 | VERIFY( out[3] == 38 ); | |
81 | VERIFY( out[4] == 84 ); | |
82 | VERIFY( out[5] == 178 ); | |
83 | VERIFY( out[6] == 368 ); | |
84 | VERIFY( out[7] == 750 ); | |
85 | VERIFY( out[8] == 1516 ); | |
86 | VERIFY( out[9] == 3050 ); | |
87 | } | |
88 | ||
89 | int | |
90 | main() | |
91 | { | |
92 | test01(); | |
93 | test02(); | |
94 | } |