Is it possible to have a 64bit Integer addition in C?

Which particular ARM compiler are you using?

Further to this thread

http://www.keil.com/forum/docs/thread7615.asp

I think that GCC supports the 'long long' type to give 64 bits?

You may find that your compiler is similar.

You will, of course, need to check in the Manual

Which particular ARM compiler are you using?

Further to this thread

http://www.keil.com/forum/docs/thread7615.asp

I think that GCC supports the 'long long' type to give 64 bits?

You may find that your compiler is similar.

You will, of course, need to check in the Manual

Oops - Dan had already said that!