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ed920373 JW |
1 | // { dg-options "-std=gnu++17" } |
2 | // { dg-do run { target c++17 } } | |
3 | ||
99dee823 | 4 | // Copyright (C) 2019-2021 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 29.8.8 [inclusive.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> | |
36 | OutputIterator | |
37 | inclusive_scan(InputIterator, InputIterator, OutputIterator); | |
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::inclusive_scan(ca.begin(), ca.end(), co.begin()); | |
46 | static_assert(std::is_same_v<decltype(end), decltype(co.begin())>); | |
47 | VERIFY( end.ptr == out+10 ); | |
48 | VERIFY( out[0] == 1 ); | |
49 | VERIFY( out[1] == (1+2) ); | |
50 | VERIFY( out[2] == (1+2+3) ); | |
51 | VERIFY( out[3] == (1+2+3+4) ); | |
52 | VERIFY( out[4] == (1+2+3+4+5) ); | |
53 | VERIFY( out[5] == (1+2+3+4+5+6) ); | |
54 | VERIFY( out[6] == (1+2+3+4+5+6+7) ); | |
55 | VERIFY( out[7] == (1+2+3+4+5+6+7+8) ); | |
56 | VERIFY( out[8] == (1+2+3+4+5+6+7+8+9) ); | |
57 | VERIFY( out[9] == (1+2+3+4+5+6+7+8+9+10) ); | |
58 | } | |
59 | ||
60 | /* | |
61 | template<class InputIterator, class OutputIterator, class BinaryOperation> | |
62 | OutputIterator | |
63 | inclusive_scan(InputIterator, InputIterator, OutputIterator, | |
64 | BinaryOperation); | |
65 | */ | |
66 | void | |
67 | test02() | |
68 | { | |
69 | int out[10]; | |
70 | test_container<int, output_iterator_wrapper> co(out); | |
71 | test_container<int, input_iterator_wrapper> ca(a); | |
72 | auto end = std::inclusive_scan(ca.begin(), ca.end(), co.begin(), | |
73 | [](int i, int j) { return 2*i + 2*j; }); | |
74 | static_assert(std::is_same_v<decltype(end), decltype(co.begin())>); | |
75 | VERIFY( end.ptr == out+10 ); | |
76 | VERIFY( out[0] == 1 ); | |
77 | VERIFY( out[1] == (2*1+2*2) ); | |
78 | VERIFY( out[2] == (2*6+2*3) ); | |
79 | VERIFY( out[3] == (2*18+2*4) ); | |
80 | VERIFY( out[4] == (2*44+2*5) ); | |
81 | VERIFY( out[5] == (2*98+2*6)); | |
82 | VERIFY( out[6] == (2*208+2*7) ); | |
83 | VERIFY( out[7] == (2*430+2*8) ); | |
84 | VERIFY( out[8] == (2*876+2*9) ); | |
85 | VERIFY( out[9] == (2*1770+2*10) ); | |
86 | } | |
87 | ||
88 | /* | |
89 | template<class InputIterator, class OutputIterator, class BinaryOperation, T> | |
90 | OutputIterator | |
91 | inclusive_scan(InputIterator, InputIterator, OutputIterator, | |
92 | BinaryOperation, T); | |
93 | */ | |
94 | void | |
95 | test03() | |
96 | { | |
97 | int out[10]; | |
98 | test_container<int, output_iterator_wrapper> co(out); | |
99 | test_container<int, input_iterator_wrapper> ca(a); | |
100 | auto end = std::inclusive_scan(ca.begin(), ca.end(), co.begin(), | |
101 | [](int i, int j) { return 2*i + 2*j; }, | |
102 | 1); | |
103 | static_assert(std::is_same_v<decltype(end), decltype(co.begin())>); | |
104 | VERIFY( end.ptr == out+10 ); | |
105 | VERIFY( out[0] == 4 ); | |
106 | VERIFY( out[1] == (2*4+2*2) ); | |
107 | VERIFY( out[2] == (2*12+2*3) ); | |
108 | VERIFY( out[3] == (2*30+2*4) ); | |
109 | VERIFY( out[4] == (2*68+2*5) ); | |
110 | VERIFY( out[5] == (2*146+2*6) ); | |
111 | VERIFY( out[6] == (2*304+2*7)); | |
112 | VERIFY( out[7] == (2*622+2*8) ); | |
113 | VERIFY( out[8] == (2*1260+2*9) ); | |
114 | VERIFY( out[9] == (2*2538+2*10) ); | |
115 | } | |
116 | ||
117 | int | |
118 | main() | |
119 | { | |
120 | test01(); | |
121 | test02(); | |
122 | test03(); | |
123 | } |