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akoskovacs/Pi.hs

Created June 2, 2013 19:35
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Viéte Pi approximation algorithm in Haskell
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Pi.hs
make_pi :: Int -> Double
make_pi n = product [2.0/(a x)|x <- [0..n]] where
a 0 = 1.0
a 1 = sqrt 2
a n = sqrt(2+(a (n-1)))
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Usage: make_pi 100

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