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fix

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This commit is contained in:
Hans Dembinski 2021-04-27 13:47:29 +02:00
parent b731ef252c
commit 34e11b787e
3 changed files with 6 additions and 6 deletions
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6
include/boost/histogram/accumulators/mean.hpp
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@ -30,7 +30,7 @@ public:
using value_type = ValueType; using value_type = ValueType;
using const_reference = const value_type&; using const_reference = const value_type&;
struct internal_data_type { struct impl_type {
value_type sum_; value_type sum_;
value_type mean_; value_type mean_;
value_type sum_of_deltas_squared_; value_type sum_of_deltas_squared_;
@ -152,9 +152,9 @@ public:
} }
private: private:
friend struct unsafe_access; impl_type data_{0, 0, 0};
internal_data_type data_{0, 0, 0}; friend struct unsafe_access;
}; };
} // namespace accumulators } // namespace accumulators

4
include/boost/histogram/unsafe_access.hpp
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@ -116,8 +116,8 @@ struct unsafe_access {
@param obj instance of accumulator. @param obj instance of accumulator.
*/ */
template <class T> template <class T>
static constexpr auto& accumulators_mean_impl(T&& m) { static constexpr auto& accumulators_mean_impl(T& m) {
return m.data_; return reinterpret_cast<typename T::impl_type&>(m);
} }
}; };

2
test/accumulators_mean_test.cpp
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@ -118,7 +118,7 @@ int main() {
a(2); a(2);
BOOST_TEST_EQ(a.count(), 2); BOOST_TEST_EQ(a.count(), 2);
unsafe_access::accumulators_mean(a).sum_ = 1; unsafe_access::accumulators_mean_impl(a).sum_ = 1;
BOOST_TEST_EQ(a.count(), 1); BOOST_TEST_EQ(a.count(), 1);
} }