On 2019-01-20 20:18, Ethan Resnick wrote:
Hi,
Apologies if es-discuss is the wrong venue for this; I've tried first poring
through the specs and asking online to no avail.
My question is: why is the limit for the `maximumSignificantDigits` option in
the `NumberFormat` API set at 21? This seems rather arbitrary — and especially
odd to me given that, iiuc, all Numbers in JS, as 64 bit floats, can only
encode up to 17 significant decimal digits. Is this some sort of weird
historical artifact of something? Should the rationale be documented anywhere?
I don't know for sure but if you input this in a browser debugger it will
indeed respond with the same 21 [sort of] significant digits
999999999999999900000
rgds,
Anders
Thanks!
Ethan
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