> enough bits to go backward from the epoch at t=0 to the big bang at t=negative whatever. For reference, the universe is about 13.787 billion years old [0]. T

> enough bits to go backward from the epoch at t=0 to the big bang at t=negative whatever. For reference, the universe is about 13.787 billion years old [0]. That's about 13.787 * 10^9 * 365 * 24 * 3600 = 4.348 * 10^17 seconds, which (I think?) is a 59-bit number [1]. 10ths of a second will require 62 bits, which is right about at the edge of what a 64-bit signed integer will allow. If you want milliseconds, you'll need at least 69 bits. For nanoseconds, you'll need at least 89 bits. So you'll either need an integer type that's wider than what's natively supported in most hardware (thus potentially sacrificing performance), or you'll have to sacrifice precision. [0]: https://en.wikipedia.org/wiki/Age_of_the_universe https://en.wikipedia.org/wiki/Age_of_the_universe [1]: https://www.wolframalpha.com/input/?i=13.787+*+10%5E9+*+365+*+24+*+3600+to+binary https://www.wolframalpha.com/input/?i=13.787+*+10%5E9+*+365+...