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1264761
2020 Jan 13
3
choose(n, k) as n approaches k
This struck me as incorrect:
> choose(3.999999, 4)
[1] 0.9999979
> choose(3.9999999, 4)
[1] 0
> choose(4, 4)
[1] 1
> choose(4.0000001, 4)
[1] 4
> choose(4.000001, 4)
[1] 1.000002
Should base::choose(n, k) check whether n is within machine precision of k and return 1?
Thanks,
Erik
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sessionInfo()
R version 3.6.0 beta (2019-04-15 r76395)
Platform: x86_64-apple-darwin15.6.0