[Bug libstdc++/48114] [C++0x] binomial_distribution incorrect for p > .5 and geometric_distribution wrongly implements the TR1 definition
paolo at gcc dot gnu.org
gcc-bugzilla@gcc.gnu.org
Mon Mar 14 18:18:00 GMT 2011
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48114
--- Comment #16 from paolo at gcc dot gnu.org <paolo at gcc dot gnu.org> 2011-03-14 18:17:55 UTC ---
Author: paolo
Date: Mon Mar 14 18:17:51 2011
New Revision: 170951
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=170951
Log:
2011-03-14 Andrey Zholos <aaz@althenia.net>
PR libstdc++/48114
* include/bits/random.h (geometric_distribution): Correct formula
in comment, per C++0x.
(geometric_distribution<>::param_type::param_type(double)): Fix check.
(geometric_distribution<>::param_type::_M_initialize):
Store log(1 - p).
* include/bits/random.tcc (geometric_distribution<>::operator()):
Fix computation.
(binomial_distribution<>::operator()): Likewise.
Modified:
branches/gcc-4_6-branch/libstdc++-v3/ChangeLog
branches/gcc-4_6-branch/libstdc++-v3/include/bits/random.h
branches/gcc-4_6-branch/libstdc++-v3/include/bits/random.tcc
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