deriving (Eq, Ord, Read, Show) for Newline and NewlineMode

[ghc-base.git] / Foreign / C / Types.hs

diff --git a/Foreign/C/Types.hs b/Foreign/C/Types.hs
index 44101fc..39a6b00 100644 (file)
--- a/Foreign/C/Types.hs
+++ b/Foreign/C/Types.hs
@@ -43,6 +43,14 @@ module Foreign.C.Types
           -- 'Prelude.Show', 'Prelude.Enum', 'Typeable' and 'Storable'.
         , CClock,   CTime
 
+        -- extracted from CTime, because we don't want this comment in
+        -- the Haskell 2010 report:
+
+        -- | To convert 'CTime' to 'Data.Time.UTCTime', use the following formula:
+        --
+        -- >  posixSecondsToUTCTime (realToFrac :: POSIXTime)
+        --
+
           -- ** Floating types
           -- | These types are are represented as @newtype@s of
           -- 'Prelude.Float' and 'Prelude.Double', and are instances of
@@ -50,7 +58,11 @@ module Foreign.C.Types
           -- 'Prelude.Show', 'Prelude.Enum', 'Typeable', 'Storable',
           -- 'Prelude.Real', 'Prelude.Fractional', 'Prelude.Floating',
           -- 'Prelude.RealFrac' and 'Prelude.RealFloat'.
-        , CFloat,  CDouble, CLDouble
+        , CFloat,  CDouble
+-- GHC doesn't support CLDouble yet
+#ifndef __GLASGOW_HASKELL__
+        , CLDouble
+#endif
 #else
           -- Exported non-abstractly in nhc98 to fix an interface file problem.
           CChar(..),    CSChar(..),  CUChar(..)
@@ -151,20 +163,25 @@ INTEGRAL_TYPE(CULLong,tyConCULLong,"CULLong",HTYPE_UNSIGNED_LONG_LONG)
 FLOATING_TYPE(CFloat,tyConCFloat,"CFloat",HTYPE_FLOAT)
 -- | Haskell type representing the C @double@ type.
 FLOATING_TYPE(CDouble,tyConCDouble,"CDouble",HTYPE_DOUBLE)
+-- GHC doesn't support CLDouble yet
+#ifndef __GLASGOW_HASKELL__
 -- HACK: Currently no long double in the FFI, so we simply re-use double
 -- | Haskell type representing the C @long double@ type.
 FLOATING_TYPE(CLDouble,tyConCLDouble,"CLDouble",HTYPE_DOUBLE)
+#endif
 
 {-# RULES
 "realToFrac/a->CFloat"    realToFrac = \x -> CFloat   (realToFrac x)
 "realToFrac/a->CDouble"   realToFrac = \x -> CDouble  (realToFrac x)
-"realToFrac/a->CLDouble"  realToFrac = \x -> CLDouble (realToFrac x)
 
 "realToFrac/CFloat->a"    realToFrac = \(CFloat   x) -> realToFrac x
 "realToFrac/CDouble->a"   realToFrac = \(CDouble  x) -> realToFrac x
-"realToFrac/CLDouble->a"  realToFrac = \(CLDouble x) -> realToFrac x
  #-}
 
+-- GHC doesn't support CLDouble yet
+-- "realToFrac/a->CLDouble"  realToFrac = \x -> CLDouble (realToFrac x)
+-- "realToFrac/CLDouble->a"  realToFrac = \(CLDouble x) -> realToFrac x
+
 -- | Haskell type representing the C @ptrdiff_t@ type.
 INTEGRAL_TYPE(CPtrdiff,tyConCPtrdiff,"CPtrdiff",HTYPE_PTRDIFF_T)
 -- | Haskell type representing the C @size_t@ type.
@@ -190,10 +207,6 @@ INTEGRAL_TYPE(CSigAtomic,tyConCSigAtomic,"CSigAtomic",HTYPE_SIG_ATOMIC_T)
 ARITHMETIC_TYPE(CClock,tyConCClock,"CClock",HTYPE_CLOCK_T)
 -- | Haskell type representing the C @time_t@ type.
 --
--- To convert to a @Data.Time.UTCTime@, use the following formula:
---
--- >  posixSecondsToUTCTime (realToFrac :: POSIXTime)
---
 ARITHMETIC_TYPE(CTime,tyConCTime,"CTime",HTYPE_TIME_T)
 
 -- FIXME: Implement and provide instances for Eq and Storable