diff options
Diffstat (limited to 'contrib/libc++/include/random')
| -rw-r--r-- | contrib/libc++/include/random | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/contrib/libc++/include/random b/contrib/libc++/include/random index c0db1abacc0a..a8d21a224dfa 100644 --- a/contrib/libc++/include/random +++ b/contrib/libc++/include/random @@ -3475,9 +3475,9 @@ typedef shuffle_order_engine<minstd_rand0, 256> knuth_b; class _LIBCPP_TYPE_VIS random_device { -#if !defined(_WIN32) +#if !(defined(_WIN32) || defined(_LIBCPP_USING_NACL_RANDOM)) int __f_; -#endif // defined(_WIN32) +#endif // !(defined(_WIN32) || defined(_LIBCPP_USING_NACL_RANDOM)) public: // types typedef unsigned result_type; @@ -4009,6 +4009,8 @@ binomial_distribution<_IntType>::param_type::param_type(result_type __t, double } } +// Reference: Kemp, C.D. (1986). `A modal method for generating binomial +// variables', Commun. Statist. - Theor. Meth. 15(3), 805-813. template<class _IntType> template<class _URNG> _IntType @@ -4035,7 +4037,8 @@ binomial_distribution<_IntType>::operator()(_URNG& __g, const param_type& __pr) if (__u < 0) return __rd - 1; } - --__rd; + if ( __rd != 0 ) + --__rd; ++__ru; if (__ru <= __pr.__t_) { |