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{-# LANGUAGE MagicHash #-}
{-# LANGUAGE PolyKinds #-}
{-# LANGUAGE DataKinds #-}

unit number-unknown where
  signature NumberUnknown where
    import GHC.Types
    data Rep :: RuntimeRep
    data Number :: TYPE Rep
    plus :: Number -> Number -> Number
    multiply :: Number -> Number -> Number
  module NumberStuff where
    import NumberUnknown
    funcA :: Number -> Number -> Number
    funcA x y = plus x (multiply x y)

unit number-int where
  module NumberUnknown where
    import GHC.Types
    type Rep = 'BoxedRep 'Lifted
    type Number = Int
    plus :: Int -> Int -> Int
    plus = (+)
    multiply :: Int -> Int -> Int
    multiply = (*)

unit number-unboxed-int where
  module NumberUnknown where
    import GHC.Types
    import GHC.Exts
    type Rep = IntRep
    type Number = Int#
    plus :: Int# -> Int# -> Int#
    plus = (+#)
    multiply :: Int# -> Int# -> Int#
    multiply = (*#)

unit main where
  dependency number-unknown[NumberUnknown=number-unboxed-int:NumberUnknown]
  module Main where
    import NumberStuff
    import GHC.Types
    main = print (I# (funcA 2# 3#))