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[project @ 1996-01-08 20:28:12 by partain]
[ghc-hetmet.git]
/
ghc
/
misc
/
examples
/
io
/
io012
/
Main.hs
1
import LibCPUTime
2
3
main =
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openFile "/dev/null" WriteMode >>= \ h ->
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hPutText h (nfib 30) >>
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getCPUTime >>= \ t ->
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putText t >>
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putChar '\n'
9
10
nfib :: Integer -> Integer
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nfib n
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| n <= 1 = 1
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| otherwise = (n1 + n2 + 1)
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where
15
n1 = nfib (n-1)
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n2 = nfib (n-2)