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protected cumulative_stats against count wraparound

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joaquintides
2024-04-30 17:32:53 +02:00
parent 2d8fd43cc4
commit 648f6fd23e
1 changed files with 5 additions and 1 deletions
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6
include/boost/unordered/detail/cumulative_stats.hpp
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@ -77,8 +77,12 @@ public:
static_assert( static_assert(
sizeof...(Ts)==N,"A sample must be provided for each sequence."); sizeof...(Ts)==N,"A sample must be provided for each sequence.");
if(BOOST_UNLIKELY(++n==0)){ /* wraparound */
reset();
n=1;
}
mp11::tuple_transform( mp11::tuple_transform(
welfords_algorithm{++n}, welfords_algorithm{n},
std::forward_as_tuple(std::forward<Ts>(xs)...), std::forward_as_tuple(std::forward<Ts>(xs)...),
data); data);
} }