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ca9431f7 HPN |
1 | // Use smaller statistics when running on simulators, so it takes less time. |
2 | // For x86_64-linux-gnu SAMPLES=30000 fails, so increase slightly. | |
18a20f3f JW |
3 | // { dg-options "-DSAMPLES=35000" { target simulator } } |
4 | // { dg-do run { target c++11 } } | |
ca9431f7 | 5 | |
83ffe9cd | 6 | // Copyright (C) 2010-2023 Free Software Foundation, Inc. |
ca9431f7 HPN |
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 of a set of strings that all have a similar pattern, | |
26 | // intended to mimic some sort of ID string. | |
27 | void | |
28 | test_numeric_pattern_set() | |
29 | { | |
ca9431f7 HPN |
30 | const unsigned long N = SAMPLES; |
31 | const unsigned long k = N/100; | |
32 | std::vector<std::string> set; | |
33 | for (unsigned long i = 0; i < N; ++i) | |
34 | { | |
35 | long i1 = i % 100000; | |
36 | long i2 = i / 100000; | |
37 | char buf[16]; | |
38 | std::sprintf(buf, "XX-%05lu-%05lu", i1, i2); | |
39 | set.push_back(buf); | |
40 | } | |
41 | ||
42 | double chi2 = chi2_hash(set, k); | |
43 | VERIFY( chi2 < k*1.1 ); | |
44 | } | |
45 | ||
46 | int | |
47 | main() | |
48 | { | |
49 | test_numeric_pattern_set(); | |
50 | return 0; | |
51 | } |