X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=compiler%2Futils%2FUtil.lhs;h=81fc0fe873ec2bdc2cb4c5161b0a7f4ed53050f2;hb=9e7567632bc6af06d3e874d1675479e7b1991f63;hp=16a1628d3520864d047eb28e7f4f50ecb3c890d3;hpb=3b03f47bbeb96c12351ebd11f6565e1f8cec4241;p=ghc-hetmet.git

diff --git a/compiler/utils/Util.lhs b/compiler/utils/Util.lhs
index 16a1628..81fc0fe 100644
--- a/compiler/utils/Util.lhs
+++ b/compiler/utils/Util.lhs
@@ -7,7 +7,7 @@
 -- | Highly random utility functions
 module Util (
         -- * Flags dependent on the compiler build
-        ghciSupported, debugIsOn, ghciTablesNextToCode, picIsOn,
+        ghciSupported, debugIsOn, ghciTablesNextToCode, isDynamicGhcLib,
         isWindowsHost, isWindowsTarget, isDarwinTarget,
 
         -- * General list processing
@@ -30,6 +30,9 @@ module Util (
 
         isIn, isn'tIn,
 
+        -- * Tuples
+        fstOf3, sndOf3, thirdOf3,
+
         -- * List operations controlled by another list
         takeList, dropList, splitAtList, split,
         dropTail,
@@ -138,11 +141,11 @@ ghciTablesNextToCode = True
 ghciTablesNextToCode = False
 #endif
 
-picIsOn :: Bool
-#ifdef __PIC__
-picIsOn = True
+isDynamicGhcLib :: Bool
+#ifdef DYNAMIC
+isDynamicGhcLib = True
 #else
-picIsOn = False
+isDynamicGhcLib = False
 #endif
 
 isWindowsHost :: Bool
@@ -181,6 +184,15 @@ nTimes 1 f = f
 nTimes n f = f . nTimes (n-1) f
 \end{code}
 
+\begin{code}
+fstOf3   :: (a,b,c) -> a    
+sndOf3   :: (a,b,c) -> b    
+thirdOf3 :: (a,b,c) -> c    
+fstOf3      (a,_,_) =  a
+sndOf3      (_,b,_) =  b
+thirdOf3    (_,_,c) =  c
+\end{code}
+
 %************************************************************************
 %*                                                                      *
 \subsection[Utils-lists]{General list processing}