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1 | // On some simulators, the workload is simply too large with values big | |
2 | // enough for the test to pass the quality test, so just skip it altogether. | |
3 | // { dg-do run { target { ! simulator } } } | |
4 | // { dg-options "-std=gnu++0x" } | |
5 | ||
6 | // Copyright (C) 2010-2014 Free Software Foundation, Inc. | |
7 | // | |
8 | // This file is part of the GNU ISO C++ Library. This library is free | |
9 | // software; you can redistribute it and/or modify it under the | |
10 | // terms of the GNU General Public License as published by the | |
11 | // Free Software Foundation; either version 3, or (at your option) | |
12 | // any later version. | |
13 | // | |
14 | // This library is distributed in the hope that it will be useful, | |
15 | // but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | // GNU General Public License for more details. | |
18 | // | |
19 | // You should have received a copy of the GNU General Public License | |
20 | // along with this library; see the file COPYING3. If not see | |
21 | // <http://www.gnu.org/licenses/>. | |
22 | ||
23 | #include "chi2_quality.h" | |
24 | ||
25 | // Tests chi^2 for a set of words taken from a document written in English. | |
26 | void | |
27 | test_document_words() | |
28 | { | |
29 | bool test __attribute__((unused)) = true; | |
30 | const std::string f_name = "thirty_years_among_the_dead_preproc.txt"; | |
31 | std::ifstream in(f_name); | |
32 | VERIFY( in.is_open() ); | |
33 | std::vector<std::string> words; | |
34 | words.assign(std::istream_iterator<std::string>(in), | |
35 | std::istream_iterator<std::string>()); | |
36 | VERIFY( words.size() > 100000 ); | |
37 | std::sort(words.begin(), words.end()); | |
38 | auto it = std::unique(words.begin(), words.end()); | |
39 | words.erase(it, words.end()); | |
40 | VERIFY( words.size() > 5000 ); | |
41 | ||
42 | const unsigned long k = words.size() / 20; | |
43 | double chi2 = chi2_hash(words, k); | |
44 | VERIFY( chi2 < k*1.1 ); | |
45 | } | |
46 | ||
47 | int | |
48 | main() | |
49 | { | |
50 | test_document_words(); | |
51 | return 0; | |
52 | } |