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-rw-r--r--ghc/lib/std/PrelWord.lhs272
1 files changed, 196 insertions, 76 deletions
diff --git a/ghc/lib/std/PrelWord.lhs b/ghc/lib/std/PrelWord.lhs
index 0a8bc1dfa6..5cefedb875 100644
--- a/ghc/lib/std/PrelWord.lhs
+++ b/ghc/lib/std/PrelWord.lhs
@@ -131,7 +131,9 @@ instance Integral Word where
instance Bounded Word where
minBound = 0
-#if WORD_SIZE_IN_BYTES == 4
+#if WORD_SIZE_IN_BITS == 31
+ maxBound = 0x7FFFFFFF
+#elif WORD_SIZE_IN_BITS == 32
maxBound = 0xFFFFFFFF
#else
maxBound = 0xFFFFFFFFFFFFFFFF
@@ -155,16 +157,11 @@ instance Bits Word where
(W# x#) `shift` (I# i#)
| i# >=# 0# = W# (x# `shiftL#` i#)
| otherwise = W# (x# `shiftRL#` negateInt# i#)
-#if WORD_SIZE_IN_BYTES == 4
- (W# x#) `rotate` (I# i#) = W# ((x# `shiftL#` i'#) `or#` (x# `shiftRL#` (32# -# i'#)))
+ (W# x#) `rotate` (I# i#) = W# ((x# `shiftL#` i'#) `or#` (x# `shiftRL#` (wsib -# i'#)))
where
- i'# = word2Int# (int2Word# i# `and#` int2Word# 31#)
-#else
- (W# x#) `rotate` (I# i#) = W# ((x# `shiftL#` i'#) `or#` (x# `shiftRL#` (64# -# i'#)))
- where
- i'# = word2Int# (int2Word# i# `and#` int2Word# 63#)
-#endif
- bitSize _ = WORD_SIZE_IN_BYTES * 8
+ i'# = word2Int# (int2Word# i# `and#` int2Word# (wsib -# 1#))
+ wsib = WORD_SIZE_IN_BITS# {- work around preprocessor problem (??) -}
+ bitSize _ = WORD_SIZE_IN_BITS
isSigned _ = False
{-# RULES
@@ -189,15 +186,15 @@ instance Show Word8 where
showsPrec p x = showsPrec p (fromIntegral x :: Int)
instance Num Word8 where
- (W8# x#) + (W8# y#) = W8# (wordToWord8# (x# `plusWord#` y#))
- (W8# x#) - (W8# y#) = W8# (wordToWord8# (x# `minusWord#` y#))
- (W8# x#) * (W8# y#) = W8# (wordToWord8# (x# `timesWord#` y#))
- negate (W8# x#) = W8# (wordToWord8# (int2Word# (negateInt# (word2Int# x#))))
+ (W8# x#) + (W8# y#) = W8# (narrow8Word# (x# `plusWord#` y#))
+ (W8# x#) - (W8# y#) = W8# (narrow8Word# (x# `minusWord#` y#))
+ (W8# x#) * (W8# y#) = W8# (narrow8Word# (x# `timesWord#` y#))
+ negate (W8# x#) = W8# (narrow8Word# (int2Word# (negateInt# (word2Int# x#))))
abs x = x
signum 0 = 0
signum _ = 1
- fromInteger (S# i#) = W8# (wordToWord8# (int2Word# i#))
- fromInteger (J# s# d#) = W8# (wordToWord8# (integer2Word# s# d#))
+ fromInteger (S# i#) = W8# (narrow8Word# (int2Word# i#))
+ fromInteger (J# s# d#) = W8# (narrow8Word# (integer2Word# s# d#))
instance Real Word8 where
toRational x = toInteger x % 1
@@ -258,9 +255,9 @@ instance Bits Word8 where
(W8# x#) `xor` (W8# y#) = W8# (x# `xor#` y#)
complement (W8# x#) = W8# (x# `xor#` mb#) where W8# mb# = maxBound
(W8# x#) `shift` (I# i#)
- | i# >=# 0# = W8# (wordToWord8# (x# `shiftL#` i#))
+ | i# >=# 0# = W8# (narrow8Word# (x# `shiftL#` i#))
| otherwise = W8# (x# `shiftRL#` negateInt# i#)
- (W8# x#) `rotate` (I# i#) = W8# (wordToWord8# ((x# `shiftL#` i'#) `or#`
+ (W8# x#) `rotate` (I# i#) = W8# (narrow8Word# ((x# `shiftL#` i'#) `or#`
(x# `shiftRL#` (8# -# i'#))))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 7#)
@@ -270,7 +267,7 @@ instance Bits Word8 where
{-# RULES
"fromIntegral/Word8->Word8" fromIntegral = id :: Word8 -> Word8
"fromIntegral/Word8->Integer" fromIntegral = toInteger :: Word8 -> Integer
-"fromIntegral/a->Word8" fromIntegral = \x -> case fromIntegral x of W# x# -> W8# (wordToWord8# x#)
+"fromIntegral/a->Word8" fromIntegral = \x -> case fromIntegral x of W# x# -> W8# (narrow8Word# x#)
"fromIntegral/Word8->a" fromIntegral = \(W8# x#) -> fromIntegral (W# x#)
#-}
@@ -290,15 +287,15 @@ instance Show Word16 where
showsPrec p x = showsPrec p (fromIntegral x :: Int)
instance Num Word16 where
- (W16# x#) + (W16# y#) = W16# (wordToWord16# (x# `plusWord#` y#))
- (W16# x#) - (W16# y#) = W16# (wordToWord16# (x# `minusWord#` y#))
- (W16# x#) * (W16# y#) = W16# (wordToWord16# (x# `timesWord#` y#))
- negate (W16# x#) = W16# (wordToWord16# (int2Word# (negateInt# (word2Int# x#))))
+ (W16# x#) + (W16# y#) = W16# (narrow16Word# (x# `plusWord#` y#))
+ (W16# x#) - (W16# y#) = W16# (narrow16Word# (x# `minusWord#` y#))
+ (W16# x#) * (W16# y#) = W16# (narrow16Word# (x# `timesWord#` y#))
+ negate (W16# x#) = W16# (narrow16Word# (int2Word# (negateInt# (word2Int# x#))))
abs x = x
signum 0 = 0
signum _ = 1
- fromInteger (S# i#) = W16# (wordToWord16# (int2Word# i#))
- fromInteger (J# s# d#) = W16# (wordToWord16# (integer2Word# s# d#))
+ fromInteger (S# i#) = W16# (narrow16Word# (int2Word# i#))
+ fromInteger (J# s# d#) = W16# (narrow16Word# (integer2Word# s# d#))
instance Real Word16 where
toRational x = toInteger x % 1
@@ -359,9 +356,9 @@ instance Bits Word16 where
(W16# x#) `xor` (W16# y#) = W16# (x# `xor#` y#)
complement (W16# x#) = W16# (x# `xor#` mb#) where W16# mb# = maxBound
(W16# x#) `shift` (I# i#)
- | i# >=# 0# = W16# (wordToWord16# (x# `shiftL#` i#))
+ | i# >=# 0# = W16# (narrow16Word# (x# `shiftL#` i#))
| otherwise = W16# (x# `shiftRL#` negateInt# i#)
- (W16# x#) `rotate` (I# i#) = W16# (wordToWord16# ((x# `shiftL#` i'#) `or#`
+ (W16# x#) `rotate` (I# i#) = W16# (narrow16Word# ((x# `shiftL#` i'#) `or#`
(x# `shiftRL#` (16# -# i'#))))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 15#)
@@ -372,7 +369,7 @@ instance Bits Word16 where
"fromIntegral/Word8->Word16" fromIntegral = \(W8# x#) -> W16# x#
"fromIntegral/Word16->Word16" fromIntegral = id :: Word16 -> Word16
"fromIntegral/Word16->Integer" fromIntegral = toInteger :: Word16 -> Integer
-"fromIntegral/a->Word16" fromIntegral = \x -> case fromIntegral x of W# x# -> W16# (wordToWord16# x#)
+"fromIntegral/a->Word16" fromIntegral = \x -> case fromIntegral x of W# x# -> W16# (narrow16Word# x#)
"fromIntegral/Word16->a" fromIntegral = \(W16# x#) -> fromIntegral (W# x#)
#-}
@@ -380,37 +377,140 @@ instance Bits Word16 where
-- type Word32
------------------------------------------------------------------------
+#if WORD_SIZE_IN_BITS < 32
+
+data Word32 = W32# Word32#
+
+instance Eq Word32 where
+ (W32# x#) == (W32# y#) = x# `eqWord32#` y#
+ (W32# x#) /= (W32# y#) = x# `neWord32#` y#
+
+instance Ord Word32 where
+ (W32# x#) < (W32# y#) = x# `ltWord32#` y#
+ (W32# x#) <= (W32# y#) = x# `leWord32#` y#
+ (W32# x#) > (W32# y#) = x# `gtWord32#` y#
+ (W32# x#) >= (W32# y#) = x# `geWord32#` y#
+
+instance Num Word32 where
+ (W32# x#) + (W32# y#) = W32# (int32ToWord32# (word32ToInt32# x# `plusInt32#` word32ToInt32# y#))
+ (W32# x#) - (W32# y#) = W32# (int32ToWord32# (word32ToInt32# x# `minusInt32#` word32ToInt32# y#))
+ (W32# x#) * (W32# y#) = W32# (int32ToWord32# (word32ToInt32# x# `timesInt32#` word32ToInt32# y#))
+ negate (W32# x#) = W32# (int32ToWord32# (negateInt32# (word32ToInt32# x#)))
+ abs x = x
+ signum 0 = 0
+ signum _ = 1
+ fromInteger (S# i#) = W32# (int32ToWord32# (intToInt32# i#))
+ fromInteger (J# s# d#) = W32# (integerToWord32# s# d#)
+
+instance Enum Word32 where
+ succ x
+ | x /= maxBound = x + 1
+ | otherwise = succError "Word32"
+ pred x
+ | x /= minBound = x - 1
+ | otherwise = predError "Word32"
+ toEnum i@(I# i#)
+ | i >= 0 = W32# (wordToWord32# (int2Word# i#))
+ | otherwise = toEnumError "Word32" i (minBound::Word32, maxBound::Word32)
+ fromEnum x@(W32# x#)
+ | x <= fromIntegral (maxBound::Int)
+ = I# (word2Int# (word32ToWord# x#))
+ | otherwise = fromEnumError "Word32" x
+ enumFrom = integralEnumFrom
+ enumFromThen = integralEnumFromThen
+ enumFromTo = integralEnumFromTo
+ enumFromThenTo = integralEnumFromThenTo
+
+instance Integral Word32 where
+ quot x@(W32# x#) y@(W32# y#)
+ | y /= 0 = W32# (x# `quotWord32#` y#)
+ | otherwise = divZeroError "quot{Word32}" x
+ rem x@(W32# x#) y@(W32# y#)
+ | y /= 0 = W32# (x# `remWord32#` y#)
+ | otherwise = divZeroError "rem{Word32}" x
+ div x@(W32# x#) y@(W32# y#)
+ | y /= 0 = W32# (x# `quotWord32#` y#)
+ | otherwise = divZeroError "div{Word32}" x
+ mod x@(W32# x#) y@(W32# y#)
+ | y /= 0 = W32# (x# `remWord32#` y#)
+ | otherwise = divZeroError "mod{Word32}" x
+ quotRem x@(W32# x#) y@(W32# y#)
+ | y /= 0 = (W32# (x# `quotWord32#` y#), W32# (x# `remWord32#` y#))
+ | otherwise = divZeroError "quotRem{Word32}" x
+ divMod x@(W32# x#) y@(W32# y#)
+ | y /= 0 = (W32# (x# `quotWord32#` y#), W32# (x# `remWord32#` y#))
+ | otherwise = divZeroError "quotRem{Word32}" x
+ toInteger x@(W32# x#)
+ | x <= fromIntegral (maxBound::Int) = S# (word2Int# (word32ToWord# x#))
+ | otherwise = case word32ToInteger# x# of (# s, d #) -> J# s d
+
+instance Bits Word32 where
+ (W32# x#) .&. (W32# y#) = W32# (x# `and32#` y#)
+ (W32# x#) .|. (W32# y#) = W32# (x# `or32#` y#)
+ (W32# x#) `xor` (W32# y#) = W32# (x# `xor32#` y#)
+ complement (W32# x#) = W32# (not32# x#)
+ (W32# x#) `shift` (I# i#)
+ | i# >=# 0# = W32# (x# `shiftL32#` i#)
+ | otherwise = W32# (x# `shiftRL32#` negateInt# i#)
+ (W32# x#) `rotate` (I# i#) = W32# ((x# `shiftL32#` i'#) `or32#`
+ (x# `shiftRL32#` (32# -# i'#)))
+ where
+ i'# = word2Int# (int2Word# i# `and#` int2Word# 63#)
+ bitSize _ = 32
+ isSigned _ = False
+
+foreign import "stg_eqWord32" unsafe eqWord32# :: Word32# -> Word32# -> Bool
+foreign import "stg_neWord32" unsafe neWord32# :: Word32# -> Word32# -> Bool
+foreign import "stg_ltWord32" unsafe ltWord32# :: Word32# -> Word32# -> Bool
+foreign import "stg_leWord32" unsafe leWord32# :: Word32# -> Word32# -> Bool
+foreign import "stg_gtWord32" unsafe gtWord32# :: Word32# -> Word32# -> Bool
+foreign import "stg_geWord32" unsafe geWord32# :: Word32# -> Word32# -> Bool
+foreign import "stg_int32ToWord32" unsafe int32ToWord32# :: Int32# -> Word32#
+foreign import "stg_word32ToInt32" unsafe word32ToInt32# :: Word32# -> Int32#
+foreign import "stg_intToInt32" unsafe intToInt32# :: Int# -> Int32#
+foreign import "stg_wordToWord32" unsafe wordToWord32# :: Word# -> Word32#
+foreign import "stg_word32ToWord" unsafe word32ToWord# :: Word32# -> Word#
+foreign import "stg_plusInt32" unsafe plusInt32# :: Int32# -> Int32# -> Int32#
+foreign import "stg_minusInt32" unsafe minusInt32# :: Int32# -> Int32# -> Int32#
+foreign import "stg_timesInt32" unsafe timesInt32# :: Int32# -> Int32# -> Int32#
+foreign import "stg_negateInt32" unsafe negateInt32# :: Int32# -> Int32#
+foreign import "stg_quotWord32" unsafe quotWord32# :: Word32# -> Word32# -> Word32#
+foreign import "stg_remWord32" unsafe remWord32# :: Word32# -> Word32# -> Word32#
+foreign import "stg_and32" unsafe and32# :: Word32# -> Word32# -> Word32#
+foreign import "stg_or32" unsafe or32# :: Word32# -> Word32# -> Word32#
+foreign import "stg_xor32" unsafe xor32# :: Word32# -> Word32# -> Word32#
+foreign import "stg_not32" unsafe not32# :: Word32# -> Word32#
+foreign import "stg_shiftL32" unsafe shiftL32# :: Word32# -> Int# -> Word32#
+foreign import "stg_shiftRL32" unsafe shiftRL32# :: Word32# -> Int# -> Word32#
+
+{-# RULES
+"fromIntegral/Int->Word32" fromIntegral = \(I# x#) -> W32# (int32ToWord32# (intToInt32# x#))
+"fromIntegral/Word->Word32" fromIntegral = \(W# x#) -> W32# (wordToWord32# x#)
+"fromIntegral/Word32->Int" fromIntegral = \(W32# x#) -> I# (word2Int# (word32ToWord# x#))
+"fromIntegral/Word32->Word" fromIntegral = \(W32# x#) -> W# (word32ToWord# x#)
+"fromIntegral/Word32->Word32" fromIntegral = id :: Word32 -> Word32
+ #-}
+
+#else
+
-- Word32 is represented in the same way as Word.
-#if WORD_SIZE_IN_BYTES == 8
+#if WORD_SIZE_IN_BITS > 32
-- Operations may assume and must ensure that it holds only values
-- from its logical range.
#endif
data Word32 = W32# Word# deriving (Eq, Ord)
-instance CCallable Word32
-instance CReturnable Word32
-
-instance Show Word32 where
-#if WORD_SIZE_IN_BYTES == 4
- showsPrec p x = showsPrec p (toInteger x)
-#else
- showsPrec p x = showsPrec p (fromIntegral x :: Int)
-#endif
-
instance Num Word32 where
- (W32# x#) + (W32# y#) = W32# (wordToWord32# (x# `plusWord#` y#))
- (W32# x#) - (W32# y#) = W32# (wordToWord32# (x# `minusWord#` y#))
- (W32# x#) * (W32# y#) = W32# (wordToWord32# (x# `timesWord#` y#))
- negate (W32# x#) = W32# (wordToWord32# (int2Word# (negateInt# (word2Int# x#))))
+ (W32# x#) + (W32# y#) = W32# (narrow32Word# (x# `plusWord#` y#))
+ (W32# x#) - (W32# y#) = W32# (narrow32Word# (x# `minusWord#` y#))
+ (W32# x#) * (W32# y#) = W32# (narrow32Word# (x# `timesWord#` y#))
+ negate (W32# x#) = W32# (narrow32Word# (int2Word# (negateInt# (word2Int# x#))))
abs x = x
signum 0 = 0
signum _ = 1
- fromInteger (S# i#) = W32# (wordToWord32# (int2Word# i#))
- fromInteger (J# s# d#) = W32# (wordToWord32# (integer2Word# s# d#))
-
-instance Real Word32 where
- toRational x = toInteger x % 1
+ fromInteger (S# i#) = W32# (narrow32Word# (int2Word# i#))
+ fromInteger (J# s# d#) = W32# (narrow32Word# (integer2Word# s# d#))
instance Enum Word32 where
succ x
@@ -421,12 +521,12 @@ instance Enum Word32 where
| otherwise = predError "Word32"
toEnum i@(I# i#)
| i >= 0
-#if WORD_SIZE_IN_BYTES == 8
+#if WORD_SIZE_IN_BITS > 32
&& i <= fromIntegral (maxBound::Word32)
#endif
= W32# (int2Word# i#)
| otherwise = toEnumError "Word32" i (minBound::Word32, maxBound::Word32)
-#if WORD_SIZE_IN_BYTES == 4
+#if WORD_SIZE_IN_BITS == 32
fromEnum x@(W32# x#)
| x <= fromIntegral (maxBound::Int)
= I# (word2Int# x#)
@@ -461,7 +561,7 @@ instance Integral Word32 where
| y /= 0 = (W32# (x# `quotWord#` y#), W32# (x# `remWord#` y#))
| otherwise = divZeroError "quotRem{Word32}" x
toInteger (W32# x#)
-#if WORD_SIZE_IN_BYTES == 4
+#if WORD_SIZE_IN_BITS == 32
| i# >=# 0# = S# i#
| otherwise = case word2Integer# x# of (# s, d #) -> J# s d
where
@@ -470,33 +570,15 @@ instance Integral Word32 where
= S# (word2Int# x#)
#endif
-instance Bounded Word32 where
- minBound = 0
- maxBound = 0xFFFFFFFF
-
-instance Ix Word32 where
- range (m,n) = [m..n]
- index b@(m,_) i
- | inRange b i = fromIntegral (i - m)
- | otherwise = indexError b i "Word32"
- inRange (m,n) i = m <= i && i <= n
-
-instance Read Word32 where
-#if WORD_SIZE_IN_BYTES == 4
- readsPrec p s = [(fromInteger x, r) | (x, r) <- readsPrec p s]
-#else
- readsPrec p s = [(fromIntegral (x::Int), r) | (x, r) <- readsPrec p s]
-#endif
-
instance Bits Word32 where
(W32# x#) .&. (W32# y#) = W32# (x# `and#` y#)
(W32# x#) .|. (W32# y#) = W32# (x# `or#` y#)
(W32# x#) `xor` (W32# y#) = W32# (x# `xor#` y#)
complement (W32# x#) = W32# (x# `xor#` mb#) where W32# mb# = maxBound
(W32# x#) `shift` (I# i#)
- | i# >=# 0# = W32# (wordToWord32# (x# `shiftL#` i#))
+ | i# >=# 0# = W32# (narrow32Word# (x# `shiftL#` i#))
| otherwise = W32# (x# `shiftRL#` negateInt# i#)
- (W32# x#) `rotate` (I# i#) = W32# (wordToWord32# ((x# `shiftL#` i'#) `or#`
+ (W32# x#) `rotate` (I# i#) = W32# (narrow32Word# ((x# `shiftL#` i'#) `or#`
(x# `shiftRL#` (32# -# i'#))))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 31#)
@@ -508,15 +590,49 @@ instance Bits Word32 where
"fromIntegral/Word16->Word32" fromIntegral = \(W16# x#) -> W32# x#
"fromIntegral/Word32->Word32" fromIntegral = id :: Word32 -> Word32
"fromIntegral/Word32->Integer" fromIntegral = toInteger :: Word32 -> Integer
-"fromIntegral/a->Word32" fromIntegral = \x -> case fromIntegral x of W# x# -> W32# (wordToWord32# x#)
+"fromIntegral/a->Word32" fromIntegral = \x -> case fromIntegral x of W# x# -> W32# (narrow32Word# x#)
"fromIntegral/Word32->a" fromIntegral = \(W32# x#) -> fromIntegral (W# x#)
#-}
+#endif
+
+instance CCallable Word32
+instance CReturnable Word32
+
+instance Show Word32 where
+#if WORD_SIZE_IN_BITS < 33
+ showsPrec p x = showsPrec p (toInteger x)
+#else
+ showsPrec p x = showsPrec p (fromIntegral x :: Int)
+#endif
+
+
+instance Real Word32 where
+ toRational x = toInteger x % 1
+
+instance Bounded Word32 where
+ minBound = 0
+ maxBound = 0xFFFFFFFF
+
+instance Ix Word32 where
+ range (m,n) = [m..n]
+ index b@(m,_) i
+ | inRange b i = fromIntegral (i - m)
+ | otherwise = indexError b i "Word32"
+ inRange (m,n) i = m <= i && i <= n
+
+instance Read Word32 where
+#if WORD_SIZE_IN_BITS < 33
+ readsPrec p s = [(fromInteger x, r) | (x, r) <- readsPrec p s]
+#else
+ readsPrec p s = [(fromIntegral (x::Int), r) | (x, r) <- readsPrec p s]
+#endif
+
------------------------------------------------------------------------
-- type Word64
------------------------------------------------------------------------
-#if WORD_SIZE_IN_BYTES == 4
+#if WORD_SIZE_IN_BITS < 64
data Word64 = W64# Word64#
@@ -606,13 +722,13 @@ foreign import "stg_gtWord64" unsafe gtWord64# :: Word64# -> Word64# -
foreign import "stg_geWord64" unsafe geWord64# :: Word64# -> Word64# -> Bool
foreign import "stg_int64ToWord64" unsafe int64ToWord64# :: Int64# -> Word64#
foreign import "stg_word64ToInt64" unsafe word64ToInt64# :: Word64# -> Int64#
+foreign import "stg_intToInt64" unsafe intToInt64# :: Int# -> Int64#
+foreign import "stg_wordToWord64" unsafe wordToWord64# :: Word# -> Word64#
+foreign import "stg_word64ToWord" unsafe word64ToWord# :: Word64# -> Word#
foreign import "stg_plusInt64" unsafe plusInt64# :: Int64# -> Int64# -> Int64#
foreign import "stg_minusInt64" unsafe minusInt64# :: Int64# -> Int64# -> Int64#
foreign import "stg_timesInt64" unsafe timesInt64# :: Int64# -> Int64# -> Int64#
foreign import "stg_negateInt64" unsafe negateInt64# :: Int64# -> Int64#
-foreign import "stg_intToInt64" unsafe intToInt64# :: Int# -> Int64#
-foreign import "stg_wordToWord64" unsafe wordToWord64# :: Word# -> Word64#
-foreign import "stg_word64ToWord" unsafe word64ToWord# :: Word64# -> Word#
foreign import "stg_quotWord64" unsafe quotWord64# :: Word64# -> Word64# -> Word64#
foreign import "stg_remWord64" unsafe remWord64# :: Word64# -> Word64# -> Word64#
foreign import "stg_and64" unsafe and64# :: Word64# -> Word64# -> Word64#
@@ -632,6 +748,10 @@ foreign import "stg_shiftRL64" unsafe shiftRL64# :: Word64# -> Int# -> W
#else
+-- Word64 is represented in the same way as Word.
+-- Operations may assume and must ensure that it holds only values
+-- from its logical range.
+
data Word64 = W64# Word# deriving (Eq, Ord)
instance Num Word64 where
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