I wonder why "long long" is 40 bits? The immediate reason is that the ALU is 40 bits wide. The reason it has this particular size is probably a tradeoff betwe

I wonder why "long long" is 40 bits? The immediate reason is that the ALU is 40 bits wide. The reason it has this particular size is probably a tradeoff between computational power vs silicon area and power consumption. A non-function-pointer is "16 or 23" bits? Near and far pointers, sort of.