How to do portable 64 bit arithmetic, without compiler warnings

Question

I occasionally use 64 bit arithmetic in an open source C++ library of mine. I discovered that long long serves my purpose quite nicely. Even some 10 year old solari

Answer 1

If you have Boost in a system include directory, you can say

#include "boost/cstdint.hpp"
boost::int64_t my_64_bit_number;

If it is in a system include directory, warnings are automatically suppressed.