rtpg • 4 hours ago

Do all float operations need to reconfirm those bits afterwards though? I suppose if you have some sort of JIT you can end up with a bunch of unboxed floats and would only pay the cost on boundaries though

2
pansa2 • 3 hours ago

> reconfirm those bits afterwards

Thanks - I hadn't thought about that but it seems to be the main downside of this approach. The benefit of NaN-boxing is that it reassigns values that are otherwise unused - floating-point calculations will never generate NaNs with those bit patterns.

lifthrasiir • 3 hours ago

Only when they have to be boxed, but yes if you are talking about that.