Sometimes a cosmic ray might hit the sign bit of the register and flip it to a negative value. So it is useful to pass it through a rectifier to ensure it's never negative, even in this rare case.
Sometimes a cosmic ray might hit the sign bit of the register and flip it to a negative value. So it is useful to pass it through a rectifier to ensure it's never negative, even in this rare case.
Indeed, we should call all idempotent functions twice just in case the first incantation fails to succeed.
In all seriousness, this is not at all how resilience to cosmic interference works in practice, and the probability of any executed instruction or even any other bit being flipped is far greater than the one specific bit you are addressing.