Without the change build fails on` master` as
https://hydra.nixos.org/build/247569562:
/build/source/src/conversion/autocorrelation_to_composite_sinusoidal_modeling.cc:25:1: error: 'uint64_t' does not name a type
25 | uint64_t CalculateBinomialCoefficient(int n, int k) {
| ^~~~~~~~
/build/source/src/conversion/autocorrelation_to_composite_sinusoidal_modeling.cc:21:1: note: 'uint64_t' is defined in header '<cstdint>'; did you forget to '#include <cstdint>'?
20 | #include <cmath> // std::acos, std::fabs, std::pow
+++ |+#include <cstdint>
21 | #include <cstddef> // std::size_t
ea3da05805