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99dee823 | 1 | // Copyright (C) 2014-2021 Free Software Foundation, Inc. |
43ee3d5f FD |
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 | ||
52066eae | 18 | // { dg-do run { target c++11 } } |
49ba2588 | 19 | // { dg-require-cstdint "" } |
89bc4ab1 | 20 | // { dg-require-effective-target random_device } |
43ee3d5f FD |
21 | |
22 | #include <random> | |
23 | #include <vector> | |
24 | #include <algorithm> | |
25 | ||
26 | #include <testsuite_counter_type.h> | |
27 | #include <testsuite_hooks.h> | |
28 | ||
29 | void test01() | |
30 | { | |
31 | using __gnu_test::counter_type; | |
32 | const std::size_t nb_values = 1000; | |
33 | ||
34 | std::random_device dev; | |
35 | std::uniform_int_distribution<int> dist; | |
36 | std::vector<counter_type> values; | |
37 | values.reserve(nb_values); | |
38 | for (std::size_t i = 0; i != nb_values; ++i) | |
39 | values.push_back(dist(dev)); | |
40 | ||
41 | counter_type::reset(); | |
42 | ||
43 | std::make_heap(values.begin(), values.end()); | |
44 | ||
45 | VERIFY( counter_type::less_compare_count <= 3.0 * nb_values ); | |
46 | } | |
47 | ||
48 | int main() | |
49 | { | |
50 | test01(); | |
51 | return 0; | |
52 | } |