13 lines
470 B
Haskell
13 lines
470 B
Haskell
import System.CPUTime
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-- We assume the function we are timing is an IO monad computation
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timeIt :: (Fractional c) => (a -> IO b) -> a -> IO c
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timeIt action arg =
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do startTime <- getCPUTime
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action arg
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finishTime <- getCPUTime
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return $ fromIntegral (finishTime - startTime) / 1000000000000
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-- Version for use with evaluating regular non-monadic functions
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timeIt' :: (Fractional c) => (a -> b) -> a -> IO c
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timeIt' f = timeIt (\x -> f x `seq` return ())
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