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're unable to control the switches passed to gcc, you might be able to turn off the warning with a #pragma.

http://gcc.gnu.org/onlinedocs/gcc/Diagnostic-Pragmas.html