ah interesting. Not all the blog comments show up without Javascript. Interesting the system time in is is seems to be in an unsigned long long? That does make sense since you want ns precision for the system clock and you don't want IEEE floating point madness for time.

So I guess the plan is to switch to 128-bit ns precision time later down the road? x86_64 and ARM already have 128-bit registers for special cases (SSE instructions, vectorization, loop unrolling), but I guess they don't have general purpose ones yet.