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aa118a03 | 1 | // Copyright (C) 2013-2014 Free Software Foundation, Inc. |
a10bad86 CJ |
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 <vector> | |
19 | #include <algorithm> | |
20 | #include <testsuite_performance.h> | |
21 | ||
22 | int main() | |
23 | { | |
24 | using namespace __gnu_test; | |
25 | ||
26 | time_counter time; | |
27 | resource_counter resource; | |
28 | ||
29 | const int max_size = 10000000; | |
30 | ||
31 | std::vector<int> v(max_size); | |
32 | ||
33 | for (int i = 0; i < max_size; ++i) | |
34 | v[i] = -i; | |
35 | ||
36 | start_counters(time, resource); | |
37 | std::stable_sort(v.begin(), v.end()); | |
38 | stop_counters(time, resource); | |
39 | ||
40 | report_performance(__FILE__, "reverse", time, resource); | |
41 | clear_counters(time, resource); | |
42 | ||
43 | for (int i = 0; i < max_size; ++i) | |
44 | v[i] = i; | |
45 | ||
46 | start_counters(time, resource); | |
47 | std::stable_sort(v.begin(), v.end()); | |
48 | stop_counters(time, resource); | |
49 | ||
50 | report_performance(__FILE__, "forwards", time, resource); | |
51 | clear_counters(time, resource); | |
52 | ||
53 | // a simple psuedo-random series which does not rely on rand() and friends | |
54 | v[0] = 0; | |
55 | for (int i = 1; i < max_size; ++i) | |
56 | v[i] = (v[i-1] + 110211473) * 745988807; | |
57 | ||
58 | start_counters(time, resource); | |
59 | std::stable_sort(v.begin(), v.end()); | |
60 | stop_counters(time, resource); | |
61 | ||
62 | report_performance(__FILE__, "random", time, resource); | |
63 | ||
64 | return 0; | |
65 | } |