Denoise BigInt conversion

[nopria]

julia> BigInt(3.453e78)

returns

34530000000000000 90829207640410620202184021047720495530415184879687805108748288

but, as we all know, the digits after the space (added by me) are arbitrary noise which could (and maybe should) be set to zero.

I'm aware that such noise has a precise reason in the way numbers are represented in a computer, but I think setting the noise digits to zero would nonetheless be an improvement.

Have a look at what has been done in this case.

[sgaure]

It's not really noise. They are deterministic digits due to limited precision in the Float64 literal. You can easily increase the precision and remove these digits with BigInt(big"3.453e78").