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Diffstat (limited to 'libstdc++-v3/include/bits/random.h')
-rw-r--r--libstdc++-v3/include/bits/random.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/libstdc++-v3/include/bits/random.h b/libstdc++-v3/include/bits/random.h
index 8b09a98c37b..7b7f5966b3c 100644
--- a/libstdc++-v3/include/bits/random.h
+++ b/libstdc++-v3/include/bits/random.h
@@ -3804,12 +3804,12 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
explicit
negative_binomial_distribution(_IntType __k = 1, double __p = 0.5)
- : _M_param(__k, __p), _M_gd(__k, 1.0)
+ : _M_param(__k, __p), _M_gd(__k, (1.0 - __p) / __p)
{ }
explicit
negative_binomial_distribution(const param_type& __p)
- : _M_param(__p), _M_gd(__p.k(), 1.0)
+ : _M_param(__p), _M_gd(__p.k(), (1.0 - __p.p()) / __p.p())
{ }
/**