explicit cast to avoid a warning
diff --git a/req/include/req_quantile_calculator_impl.hpp b/req/include/req_quantile_calculator_impl.hpp
index bc143bf..fe6fcc9 100755
--- a/req/include/req_quantile_calculator_impl.hpp
+++ b/req/include/req_quantile_calculator_impl.hpp
@@ -49,7 +49,7 @@
template<typename T, typename A>
const T& req_quantile_calculator<T, A>::get_quantile(double rank) const {
- uint64_t weight = rank * n_;
+ uint64_t weight = static_cast<uint64_t>(rank * n_);
auto it = std::lower_bound(entries_.begin(), entries_.end(), Entry(nullptr, weight), compare_pairs_by_second());
if (it == entries_.end()) return *(entries_[entries_.size() - 1].first);
return *(it->first);
