HelenOS sources

stoull           1886 uspace/lib/cpp/include/__bits/string/string.hpp     unsigned long long stoull(const string& str, size_t* idx = nullptr, int base = 10);
stoull           1906 uspace/lib/cpp/include/__bits/string/string.hpp     unsigned long long stoull(const wstring& str, size_t* idx = nullptr, int base = 10);