import Prelude
import Data.Typeable
+import Data.Generics.Basics( Data )
#ifdef __HUGS__
import Hugs.Prelude(Num(fromInt), Fractional(fromDouble))
data (RealFloat a) => Complex a
= !a :+ !a -- ^ forms a complex number from its real and imaginary
-- rectangular components.
- deriving (Eq, Read, Show)
+# if __GLASGOW_HASKELL__
+ deriving (Eq, Show, Read, Data)
+# else
+ deriving (Eq, Show, Read)
+# endif
-- -----------------------------------------------------------------------------
-- Functions over Complex