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import Control.Exception as E
import Data.Int
main :: IO ()
main = do putStrLn "Int8"
mapM_ p =<< (f :: IO [Either Int8 String])
putStrLn "Int16"
mapM_ p =<< (f :: IO [Either Int16 String])
putStrLn "Int32"
mapM_ p =<< (f :: IO [Either Int32 String])
putStrLn "Int64"
mapM_ p =<< (f :: IO [Either Int64 String])
putStrLn "Int"
mapM_ p =<< (f :: IO [Either Int String])
where p (Left x) = print x
p (Right e) = putStrLn e
f :: (Integral a, Bounded a) => IO [Either a String]
f = sequence [ g (minBound `div` (-1)),
g (minBound `mod` (-1)),
g (case minBound `divMod` (-1) of (x, _) -> x),
g (case minBound `divMod` (-1) of (_, x) -> x),
g (minBound `quot` (-1)),
g (minBound `rem` (-1)),
g (case minBound `quotRem` (-1) of (x, _) -> x),
g (case minBound `quotRem` (-1) of (_, x) -> x) ]
where g x = do x' <- evaluate x
return (Left x')
`E.catch`
\e -> return (Right (show (e :: SomeException)))
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