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8d9254fc | 1 | // Copyright (C) 2018-2020 Free Software Foundation, Inc. |
fab2c75b JW |
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 | #include <valarray> | |
19 | #include <testsuite_hooks.h> | |
20 | ||
21 | void | |
22 | test01() | |
23 | { | |
24 | // PR libstdc++/87641 | |
25 | std::valarray<int> v1(3); | |
26 | v1[0] = 1; | |
27 | v1[1] = 2; | |
28 | v1[2] = 3; | |
29 | std::valarray< std::valarray<int> > v2(v1, 3); | |
30 | std::valarray<int> v3 = v2.sum(); | |
31 | VERIFY( v3.size() == v1.size() ); | |
32 | VERIFY( v3[0] == 3 ); | |
33 | VERIFY( v3[1] == 6 ); | |
34 | VERIFY( v3[2] == 9 ); | |
35 | } | |
36 | ||
37 | struct X | |
38 | { | |
39 | X() : val(1) { } | |
40 | ||
41 | X& operator+=(const X& x) { val += x.val; return *this; } | |
42 | bool operator==(const X& x) { return val == x.val; } | |
43 | ||
44 | int val; | |
45 | }; | |
46 | ||
47 | void | |
48 | test02() | |
49 | { | |
50 | std::valarray<X> v1(1); | |
51 | VERIFY( v1.sum() == v1[0] ); | |
52 | ||
53 | std::valarray<X> v2(2); | |
54 | VERIFY( v2.sum().val == 2 ); | |
55 | } | |
56 | ||
57 | struct Y | |
58 | { | |
59 | X& operator+=(const Y&) { throw 1; } | |
60 | }; | |
61 | ||
62 | void | |
63 | test03() | |
64 | { | |
65 | std::valarray<Y> v1(1); | |
66 | (void) v1.sum(); // no addition performed for a single element | |
67 | } | |
68 | ||
69 | int | |
70 | main() | |
71 | { | |
72 | test01(); | |
73 | test02(); | |
74 | test03(); | |
75 | } |