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git.ipfire.org Git - thirdparty/gcc.git/blob - libstdc++-v3/testsuite/20_util/hash/chi2_q_numeric_pattern_set.cc
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.
3 // { dg-options "-DSAMPLES=35000" { target simulator } }
4 // { dg-do run { target c++11 } }
6 // Copyright (C) 2010-2020 Free Software Foundation, Inc.
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)
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.
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/>.
23 #include "chi2_quality.h"
25 // Tests chi^2 of a set of strings that all have a similar pattern,
26 // intended to mimic some sort of ID string.
28 test_numeric_pattern_set()
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
)
38 std::sprintf(buf
, "XX-%05lu-%05lu", i1
, i2
);
42 double chi2
= chi2_hash(set
, k
);
43 VERIFY( chi2
< k
*1.1 );
49 test_numeric_pattern_set();