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Ingy döt Net 2023-07-01 11:58:00 -04:00
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Task/Tau-function/Haskell/tau-function.hs Normal file
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tau :: Integral a => a -> a
tau n | n <= 0 = error "Not a positive integer"
tau n = go 0 (1, 1)
where
yo i = (i, i * i)
go r (i, ii)
| n < ii = r
| n == ii = r + 1
| 0 == mod n i = go (r + 2) (yo $ i + 1)
| otherwise = go r (yo $ i + 1)
main = print $ map tau [1..100]