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41 Commits

Author SHA1 Message Date
David Majnemer 2dfdfdf45c [libc++] Don't return uninitialized data from random_device::operator() 
Make sure we appropriately retry calls to read if the return result is
less than what we asked for.

Additionally, check and handle IO errors: EINTR results in the read
operation getting restarted; other errors turn into exceptions.

llvm-svn: 210061
 2014-06-03 02:40:39 +00:00
David Majnemer 1e9592a9c7 [libc++] random_device fails if open returns zero 
random_device::random_device(const string&) wrongly assumes that open
can only validly return a file descriptor greater than zero.

This results in random_device believing that it didn't successfully open
the device causing it to throw in it's constructor, this ends up leaking
a file descriptor.

The fix is simple, don't error on file descriptors which are zero.

llvm-svn: 210060
 2014-06-03 02:21:37 +00:00
Howard Hinnant 849821cffb Fix a couple of bugs in linear_congruential_engine::seed. Regression test added. 
llvm-svn: 182421
 2013-05-21 21:05:12 +00:00
Howard Hinnant a60ae88db2 Marshall Clow found some divide-by-zero warnings with UBSan in rand's binomial_distribution test. This eliminates the divide-by-zeros and describes in comments the numerical difficulties the test is having. Each of the problematic tests are exploring edge cases of the distribution. 
llvm-svn: 177826
 2013-03-23 19:29:45 +00:00
Marshall Clow 761b5cf087 Fix bug in test; found by AddressSanitizer 
llvm-svn: 177464
 2013-03-20 00:01:48 +00:00
Marshall Clow 1c00ce5070 Fix bug in test; found by AddressSanitizer 
llvm-svn: 177355
 2013-03-18 23:39:36 +00:00
Howard Hinnant 16694b5df5 Zhang Xiongpang: Add definitions for const data members. Fixes http://llvm.org/bugs/show_bug.cgi?id=14585. 
llvm-svn: 170026
 2012-12-12 21:14:28 +00:00
Howard Hinnant e386b7b360 Update <random> with constexpr support. Patch contributed by Jonathan Sauer. 
llvm-svn: 153896
 2012-04-02 21:00:45 +00:00
Howard Hinnant e8df82fa1a Fix test for default constructor of discrete_distribution. This partially addresses http://llvm.org/bugs/show_bug.cgi?id=12436. 
llvm-svn: 153873
 2012-04-02 15:00:14 +00:00
Howard Hinnant 54976f2619 Fixed PR10574: http://llvm.org/bugs/show_bug.cgi?id=10574 
llvm-svn: 137522
 2011-08-12 21:56:02 +00:00
Howard Hinnant af6c26b366 Warning suppression in test. 
llvm-svn: 131344
 2011-05-14 15:38:08 +00:00
Howard Hinnant 3962348edf Warning suppression in test. 
llvm-svn: 131343
 2011-05-14 15:36:25 +00:00
Howard Hinnant a23551cad4 Fix bug in Sseq constraints found by Seth Cantrell 
llvm-svn: 129285
 2011-04-11 18:22:12 +00:00
Howard Hinnant 412dbebe1b license change 
llvm-svn: 119395
 2010-11-16 22:09:02 +00:00
Howard Hinnant 7609c9b665 Changed __config to react to all of clang's currently documented has_feature flags, and renamed _LIBCPP_MOVE to _LIBCPP_HAS_NO_RVALUE_REFERENCES to be more consistent with the rest of the libc++'s flags, and with clang's nomenclature. 
llvm-svn: 113086
 2010-09-04 23:28:19 +00:00
Howard Hinnant a0eaf608cd Fixing whitespace problems 
llvm-svn: 111762
 2010-08-22 00:42:21 +00:00
Howard Hinnant 03ec83e9e8 Implemented some adaptor constructors which I had missed. 
llvm-svn: 104946
 2010-05-28 15:49:54 +00:00
Howard Hinnant b4d2fd2f0f [rand.dist.samp.plinear]. This means we've got a fully tested and functional <random>! 489 tests over 48 sections are passing. :-) The only thing still on my plate in this area is to back-port some of this technology to random_shuffle/shuffle in <algorithm>. That will involve shuffling header bits around (<random> depepends on <algorithm>), but it won't entail that much development (compared to what has been required for <random>). 
llvm-svn: 104575
 2010-05-25 00:27:34 +00:00
Howard Hinnant e302eab415 [rand.dist.samp.pconst] plus some bug fixes in the tests of the other distributions 
llvm-svn: 104224
 2010-05-20 15:11:46 +00:00
Howard Hinnant fb0e5ec825 [rand.dist.samp.discrete] 
llvm-svn: 104103
 2010-05-19 01:53:57 +00:00
Howard Hinnant ecbb921cbf [rand.dist.norm.t] 
llvm-svn: 104052
 2010-05-18 20:08:04 +00:00
Howard Hinnant e31e36f910 [rand.dist.norm.f] 
llvm-svn: 104035
 2010-05-18 17:32:30 +00:00
Howard Hinnant 34c3b52a2c Better cauchy tests 
llvm-svn: 104008
 2010-05-18 00:34:49 +00:00
Howard Hinnant 6692b261d8 [rand.dist.norm.cauchy]. I'm having trouble testing the output as all statistical properties are undefined. They do not converge upon any one value as the number of samples increases. Suggestions for tests welcome. 
llvm-svn: 103983
 2010-05-17 21:55:46 +00:00
Howard Hinnant fd5c3a34e3 [rand.dist.norm.lognormal] 
llvm-svn: 103957
 2010-05-17 18:31:53 +00:00
Howard Hinnant c675d983f6 [rand.dist.pois.extreme] 
llvm-svn: 103942
 2010-05-17 16:21:56 +00:00
Howard Hinnant 05fa30d595 [rand.dist.bern.geo] 
llvm-svn: 103937
 2010-05-17 13:44:27 +00:00
Howard Hinnant 89eaea24bc [rand.dist.bern.negbin] 
llvm-svn: 103916
 2010-05-17 00:09:38 +00:00
Howard Hinnant 45a999719b Beefed up the tests for all of the distributions to include checks against the expected skewness and kurtosis 
llvm-svn: 103910
 2010-05-16 17:56:20 +00:00
Howard Hinnant b8829825f1 [rand.dist.pois.weibull] 
llvm-svn: 103891
 2010-05-16 01:09:02 +00:00
Howard Hinnant e3900731f6 [rand.dist.norm.chisq] 
llvm-svn: 103888
 2010-05-15 23:36:00 +00:00
Howard Hinnant 932ce81fe9 Revisited [rand.dist.bern.bin] and [rand.dist.pois.poisson] with better algorithms 
llvm-svn: 103886
 2010-05-15 21:36:23 +00:00
Howard Hinnant 0e675818f1 [rand.dist.pois.poisson] 
llvm-svn: 103814
 2010-05-14 21:38:54 +00:00
Howard Hinnant 7070922ff8 [rand.dist.pois.gamma] 
llvm-svn: 103788
 2010-05-14 18:43:10 +00:00
Howard Hinnant f8bfb45e9b partial [rand.dist.pois.gamma] 
llvm-svn: 103722
 2010-05-13 17:58:28 +00:00
Howard Hinnant 6f97c4e7bc [rand.dist.norm.normal] 
llvm-svn: 103646
 2010-05-12 21:02:31 +00:00
Howard Hinnant bcc4ff0db0 [rand.dist.pois.exp] 
llvm-svn: 103621
 2010-05-12 17:08:57 +00:00
Howard Hinnant c1cb949c0a tests for [rand.dist.bern.bin] 
llvm-svn: 103612
 2010-05-12 13:33:11 +00:00
Howard Hinnant deb23ecdf9 [rand.dist.bern.bin]. The evaluation function for this binomial distribution is hopefully just a placeholder. It is using the simplest and slowest method for computing the distribution and needs to be upgraded. 
llvm-svn: 103524
 2010-05-11 23:26:59 +00:00
Howard Hinnant 5b08a8a432 Wiped out some non-ascii characters that snuck into the copyright. 
llvm-svn: 103516
 2010-05-11 21:36:01 +00:00
Howard Hinnant 3e519524c1 libcxx initial import 
llvm-svn: 103490
 2010-05-11 19:42:16 +00:00