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52066eae | 1 | // { dg-do run { target c++14 } } |
49ba2588 | 2 | // { dg-require-cstdint "" } |
89bc4ab1 | 3 | // { dg-require-effective-target random_device } |
5ae465c5 | 4 | // { dg-require-effective-target tls_runtime } |
bfc6afd9 | 5 | // { dg-add-options tls } |
5ae465c5 | 6 | |
8d9254fc | 7 | // Copyright (C) 2015-2020 Free Software Foundation, Inc. |
5ae465c5 JW |
8 | // |
9 | // This file is part of the GNU ISO C++ Library. This library is free | |
10 | // software; you can redistribute it and/or modify it under the | |
11 | // terms of the GNU General Public License as published by the | |
12 | // Free Software Foundation; either version 3, or (at your option) | |
13 | // any later version. | |
14 | ||
15 | // This library is distributed in the hope that it will be useful, | |
16 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | // GNU General Public License for more details. | |
19 | ||
c7cbb4da | 20 | // You should have received a copy of the GNU General Public License along |
5ae465c5 JW |
21 | // with this library; see the file COPYING3. If not see |
22 | // <http://www.gnu.org/licenses/>. | |
23 | ||
24 | #include <experimental/random> | |
25 | #include <testsuite_hooks.h> | |
26 | ||
27 | void | |
28 | test01() | |
29 | { | |
30 | for (int i = 0; i < 100; ++i) | |
31 | { | |
32 | const int n = std::experimental::randint(-10, i); | |
33 | VERIFY( -10 <= n && n <= i ); | |
34 | } | |
35 | ||
36 | std::experimental::reseed(99u); | |
37 | const long n1[] = { | |
38 | std::experimental::randint(0, 100), | |
39 | std::experimental::randint(0, 100), | |
40 | std::experimental::randint(0, 100), | |
41 | std::experimental::randint(0, 100), | |
42 | std::experimental::randint(0, 100) | |
43 | }; | |
44 | std::experimental::reseed(99u); | |
45 | const long n2[] = { | |
46 | std::experimental::randint(0, 100), | |
47 | std::experimental::randint(0, 100), | |
48 | std::experimental::randint(0, 100), | |
49 | std::experimental::randint(0, 100), | |
50 | std::experimental::randint(0, 100) | |
51 | }; | |
52 | for (int i = 0; i < 5; ++i) | |
53 | VERIFY( n1[i] == n2[i] ); | |
54 | ||
55 | std::experimental::reseed(); | |
56 | const long n3[] = { | |
57 | std::experimental::randint(0, 100), | |
58 | std::experimental::randint(0, 100), | |
59 | std::experimental::randint(0, 100) | |
60 | }; | |
61 | VERIFY( !(n3[0] == n1[0] && n3[1] == n1[1] && n3[2] == n1[2]) ); | |
62 | } | |
63 | ||
64 | void | |
65 | test02() | |
66 | { | |
67 | auto check = [](auto v) { | |
68 | auto n = std::experimental::randint(decltype(v)(0), v); | |
69 | static_assert(std::is_same<decltype(n), decltype(v)>::value, | |
70 | "return type is correct"); | |
71 | VERIFY(0 <= n && n <= v); | |
72 | }; | |
73 | check( (short)10 ); | |
74 | check( 100 ); | |
75 | check( 1000L ); | |
76 | check( 10000LL ); | |
77 | check( (unsigned short)10 ); | |
78 | check( 100U ); | |
79 | check( 1000UL ); | |
80 | check( 10000ULL ); | |
81 | } | |
82 | ||
83 | int main() | |
84 | { | |
85 | test01(); | |
86 | test02(); | |
87 | } |