[project @ 2003-08-22 08:58:30 by panne]

[ghc-base.git] / Data / Char.hs

diff --git a/Data/Char.hs b/Data/Char.hs
index a4bf1af..001c83f 100644 (file)
--- a/Data/Char.hs
+++ b/Data/Char.hs
@@ -3,14 +3,12 @@
 -- |
 -- Module      :  Data.Char
 -- Copyright   :  (c) The University of Glasgow 2001
--- License     :  BSD-style (see the file libraries/core/LICENSE)
+-- License     :  BSD-style (see the file libraries/base/LICENSE)
 -- 
 -- Maintainer  :  libraries@haskell.org
 -- Stability   :  provisional
 -- Portability :  portable
 --
--- $Id: Char.hs,v 1.3 2002/04/24 16:31:39 simonmar Exp $
---
 -- The Char type and associated operations.
 --
 -----------------------------------------------------------------------------
@@ -44,9 +42,24 @@ module Data.Char
 import GHC.Base
 import GHC.Show
 import GHC.Read (readLitChar, lexLitChar)
+import GHC.Unicode
+import GHC.Num
 #endif
 
 #ifdef __HUGS__
-isLatin1 c = True
+import Hugs.Char
+#endif
+
+#ifdef __NHC__
+import Prelude
+import Prelude(Char,String)
+import Char
 #endif
 
+
+digitToInt :: Char -> Int
+digitToInt c
+ | isDigit c           =  ord c - ord '0'
+ | c >= 'a' && c <= 'f' =  ord c - ord 'a' + 10
+ | c >= 'A' && c <= 'F' =  ord c - ord 'A' + 10
+ | otherwise           =  error ("Char.digitToInt: not a digit " ++ show c) -- sigh