X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=Data%2FComplex.hs;h=bbc8a07db2449f75bf26c1d70c9eb6eef4b74cb2;hb=2b88e86142ffbf79dad8596082ec301627a5682c;hp=60ee83469c04576fd0474bba8a8e979114b1b21d;hpb=d6adf6bd595c3b8f750acc9293f5847f176b521b;p=ghc-base.git

diff --git a/Data/Complex.hs b/Data/Complex.hs
index 60ee834..bbc8a07 100644
--- a/Data/Complex.hs
+++ b/Data/Complex.hs
@@ -44,6 +44,9 @@ module Data.Complex
 import Prelude
 
 import Data.Typeable
+#ifdef __GLASGOW_HASKELL__
+import Data.Data (Data)
+#endif
 
 #ifdef __HUGS__
 import Hugs.Prelude(Num(fromInt), Fractional(fromDouble))
@@ -62,7 +65,11 @@ infix  6  :+
 data (RealFloat a) => Complex a
   = !a :+ !a    -- ^ forms a complex number from its real and imaginary
                 -- rectangular components.
+# if __GLASGOW_HASKELL__
+        deriving (Eq, Show, Read, Data)
+# else
         deriving (Eq, Show, Read)
+# endif
 
 -- -----------------------------------------------------------------------------
 -- Functions over Complex