gcc has the __int128 type natively.
However, it’s not defined in limits.h. I’m mean there’re no such things as INT128_MAX or INT128_MIN…
And gcc is interpreting literal constants as 64 bits integers. This means that if I write #define INT128_MIN −170141183460469231731687303715884105728 it will complain about the type telling it has truncated the value.
This is especially annoying for shifting on arrays. How to overcome this ?