Len calculation in diodes

[jeanbza]

re: #2

The diodes are frequently doing this thing:

idx := someUint64Variable % len(buffer)

Very, very occasionally data will be lost if the buffer length does not divide evenly into int64 = 18446744073709551615 . Probably not something worth stressing about, but thought I'd mention. The amount of data lost increases as the buffer size increases.

[poy]

@jadekler Thanks for pointing this out. I'll look into fixing it.

[hev]

We are deleting the automatically generated story for this.

[poy]

@jadekler

I agree that there could be a gap when the read and write indexes overflow, however if we do some math we can demonstrate that the overflow won't happen in our lifetime (permitting a quantum computer does not adapt the diodes).

Even if we could get a computer that can write to a diode once a nanosecond, it would take 584.54 years.

We could mitigate the risk, however I think adding some docs to recommend a 2^x buffer length is recommended.