, Word64 -- Integral, Ix, Enum,
-- Read, Show, Bits,
-- CCallable, CReturnable
- -- (last two
+ -- (last two are GHC specific.)
+ , word8ToWord16 -- :: Word8 -> Word16
, word8ToWord32 -- :: Word8 -> Word32
- , word32ToWord8 -- :: Word32 -> Word8
+ , word8ToWord64 -- :: Word8 -> Word64
+
+ , word16ToWord8 -- :: Word16 -> Word32
, word16ToWord32 -- :: Word16 -> Word32
+ , word16ToWord64 -- :: Word8 -> Word64
+
+ , word32ToWord8 -- :: Word32 -> Word8
, word32ToWord16 -- :: Word32 -> Word16
+ , word32ToWord64 -- :: Word32 -> Word64
+ , word64ToWord8 -- :: Word64 -> Word8
+ , word64ToWord16 -- :: Word64 -> Word16
+ , word64ToWord32 -- :: Word64 -> Word32
+
, word8ToInt -- :: Word8 -> Int
- , intToWord8 -- :: Int -> Word8
, word16ToInt -- :: Word16 -> Int
- , intToWord16 -- :: Int -> Word16
, word32ToInt -- :: Word32 -> Int
+ , word64ToInt -- :: Word64 -> Int
+
+ , intToWord8 -- :: Int -> Word8
+ , intToWord16 -- :: Int -> Word16
, intToWord32 -- :: Int -> Word32
+ , intToWord64 -- :: Int -> Word64
- , word32ToWord64 -- :: Word32 -> Word64
- , word64ToWord32 -- :: Word64 -> Word32
-
+ , word8ToInteger -- :: Word8 -> Integer
+ , word16ToInteger -- :: Word16 -> Integer
+ , word32ToInteger -- :: Word32 -> Integer
, word64ToInteger -- :: Word64 -> Integer
+
+ , integerToWord8 -- :: Integer -> Word8
+ , integerToWord16 -- :: Integer -> Word16
+ , integerToWord32 -- :: Integer -> Word32
, integerToWord64 -- :: Integer -> Word64
-- NB! GHC SPECIFIC:
, wordToWord8 -- :: Word -> Word8
- , word8ToWord -- :: Word8 -> Word
, wordToWord16 -- :: Word -> Word16
- , word16ToWord -- :: Word16 -> Word
, wordToWord32 -- :: Word -> Word32
- , word32ToWord -- :: Word32 -> Word
, wordToWord64 -- :: Word -> Word64
+
+ , word8ToWord -- :: Word8 -> Word
+ , word16ToWord -- :: Word16 -> Word
+ , word32ToWord -- :: Word32 -> Word
, word64ToWord -- :: Word64 -> Word
-- The "official" place to get these from is Addr.
-- non-standard, GHC specific
, wordToInt
+ -- Internal, do not use.
+ , word8ToWord#
+ , word16ToWord#
+ , word32ToWord#
+
) where
-import GlaExts
-import Ix
-import Bits
+#ifdef __HUGS__
+import PreludeBuiltin
+#else
+import PrelBase
import CCall
-import Numeric (readDec, showInt)
import PrelForeign
import PrelIOBase
+import PrelAddr
+#endif
+import Ix
+import Bits
+import Ratio
+import Numeric (readDec, showInt)
-----------------------------------------------------------------------------
-- The "official" coercion functions
-----------------------------------------------------------------------------
word8ToWord32 :: Word8 -> Word32
-word32ToWord8 :: Word32 -> Word8
word16ToWord32 :: Word16 -> Word32
+word32ToWord8 :: Word32 -> Word8
word32ToWord16 :: Word32 -> Word16
-word8ToInt :: Word8 -> Int
-intToWord8 :: Int -> Word8
-word16ToInt :: Word16 -> Int
-intToWord16 :: Int -> Word16
+word8ToInt :: Word8 -> Int
+word16ToInt :: Word16 -> Int
+intToWord8 :: Int -> Word8
+intToWord16 :: Int -> Word16
+
+integerToWord8 :: Integer -> Word8
+integerToWord16 :: Integer -> Word16
-word8ToInt = word32ToInt . word8ToWord32
-intToWord8 = word32ToWord8 . intToWord32
-word16ToInt = word32ToInt . word16ToWord32
-intToWord16 = word32ToWord16 . intToWord32
+word8ToInt = word32ToInt . word8ToWord32
+intToWord8 = word32ToWord8 . intToWord32
+word16ToInt = word32ToInt . word16ToWord32
+intToWord16 = word32ToWord16 . intToWord32
+word8ToInteger = word32ToInteger . word8ToWord32
+word16ToInteger = word32ToInteger . word16ToWord32
+integerToWord8 = fromInteger
+integerToWord16 = fromInteger
+intToWord32 :: Int -> Word32
intToWord32 (I# x) = W32# ((int2Word# x) `and#` (case (maxBound::Word32) of W32# x# -> x#))
--intToWord32 (I# x) = W32# (int2Word# x)
+
+word32ToInt :: Word32 -> Int
word32ToInt (W32# x) = I# (word2Int# x)
+word32ToInteger :: Word32 -> Integer
+word32ToInteger (W32# x) = word2Integer x
+
+integerToWord32 :: Integer -> Word32
+integerToWord32 = fromInteger
+
wordToInt :: Word -> Int
wordToInt (W# w#) = I# (word2Int# w#)
instance CReturnable Word8
word8ToWord32 (W8# x) = W32# x
+word8ToWord16 (W8# x) = W16# x
word32ToWord8 (W32# x) = W8# (wordToWord8# x)
-- mask out upper three bytes.
-- Note: no need to mask results here
-- as they cannot overflow.
instance Integral Word8 where
- div (W8# x) (W8# y) = W8# (x `quotWord#` y)
- quot (W8# x) (W8# y) = W8# (x `quotWord#` y)
- rem (W8# x) (W8# y) = W8# (x `remWord#` y)
- mod (W8# x) (W8# y) = W8# (x `remWord#` y)
+ div x@(W8# x#) (W8# y#)
+ | y# `neWord#` (int2Word# 0#) = W8# (x# `quotWord#` y#)
+ | otherwise = divZeroError "div{Word8}" x
+
+ quot x@(W8# x#) (W8# y#)
+ | y# `neWord#` (int2Word# 0#) = W8# (x# `quotWord#` y#)
+ | otherwise = divZeroError "quot{Word8}" x
+
+ rem x@(W8# x#) (W8# y#)
+ | y# `neWord#` (int2Word# 0#) = W8# (x# `remWord#` y#)
+ | otherwise = divZeroError "rem{Word8}" x
+
+ mod x@(W8# x#) (W8# y#)
+ | y# `neWord#` (int2Word# 0#) = W8# (x# `remWord#` y#)
+ | otherwise = divZeroError "mod{Word8}" x
+
quotRem (W8# x) (W8# y) = (W8# (x `quotWord#` y), W8# (x `remWord#` y))
divMod (W8# x) (W8# y) = (W8# (x `quotWord#` y), W8# (x `remWord#` y))
- toInteger (W8# x) = word2Integer# x
+
+ toInteger (W8# x) = word2Integer x
toInt x = word8ToInt x
instance Ix Word8 where
range (m,n) = [m..n]
- index b@(m,n) i
+ index b@(m,_) i
| inRange b i = word8ToInt (i-m)
- | otherwise = error (showString "Ix{Word8}.index: Index " .
- showParen True (showsPrec 0 i) .
- showString " out of range " $
- showParen True (showsPrec 0 b) "")
+ | otherwise = indexError i b "Word8"
inRange (m,n) i = m <= i && i <= n
instance Enum Word8 where
- toEnum (I# i) = W8# (intToWord8# i)
+ succ w
+ | w == maxBound = succError "Word8"
+ | otherwise = w+1
+ pred w
+ | w == minBound = predError "Word8"
+ | otherwise = w-1
+
+ toEnum i@(I# i#)
+ | i >= toInt (minBound::Word8) && i <= toInt (maxBound::Word8)
+ = W8# (intToWord8# i#)
+ | otherwise
+ = toEnumError "Word8" i (minBound::Word8,maxBound::Word8)
+
fromEnum (W8# w) = I# (word2Int# w)
- enumFrom c = map toEnum [fromEnum c .. fromEnum (maxBound::Word8)]
- enumFromThen c d = map toEnum [fromEnum c, fromEnum d .. fromEnum (last::Word8)]
- where last = if d < c then minBound else maxBound
+ enumFrom c = map toEnum [fromEnum c .. fromEnum (maxBound::Word8)]
+ enumFromThen c d = map toEnum [fromEnum c, fromEnum d .. fromEnum last]
+ where
+ last :: Word8
+ last
+ | d < c = minBound
+ | otherwise = maxBound
instance Read Word8 where
- readsPrec p = readDec
+ readsPrec _ = readDec
instance Show Word8 where
- showsPrec p = showInt
+ showsPrec _ = showInt
--
-- Word8s are represented by an (unboxed) 32-bit Word.
pow2# :: Int# -> Int#
pow2# x# = word2Int# (shiftL# (int2Word# 1#) x#)
+word2Integer :: Word# -> Integer
+word2Integer w = case word2Integer# w of
+ (# a, s, d #) -> J# a s d
+
pow2_64# :: Int# -> Int64#
pow2_64# x# = word64ToInt64# (shiftL64# (wordToWord64# (int2Word# 1#)) x#)
instance CReturnable Word16
word16ToWord32 (W16# x) = W32# x
+word16ToWord8 (W16# x) = W8# (wordToWord8# x)
word32ToWord16 (W32# x) = W16# (wordToWord16# x)
-- mask out upper 16 bits.
toRational x = toInteger x % 1
instance Integral Word16 where
- div (W16# x) (W16# y) = W16# (x `quotWord#` y)
- quot (W16# x) (W16# y) = W16# (x `quotWord#` y)
- rem (W16# x) (W16# y) = W16# (x `remWord#` y)
- mod (W16# x) (W16# y) = W16# (x `remWord#` y)
+ div x@(W16# x#) (W16# y#)
+ | y# `neWord#` (int2Word# 0#) = W16# (x# `quotWord#` y#)
+ | otherwise = divZeroError "div{Word16}" x
+
+ quot x@(W16# x#) (W16# y#)
+ | y# `neWord#`(int2Word# 0#) = W16# (x# `quotWord#` y#)
+ | otherwise = divZeroError "quot{Word16}" x
+
+ rem x@(W16# x#) (W16# y#)
+ | y# `neWord#` (int2Word# 0#) = W16# (x# `remWord#` y#)
+ | otherwise = divZeroError "rem{Word16}" x
+
+ mod x@(W16# x#) (W16# y#)
+ | y# `neWord#` (int2Word# 0#) = W16# (x# `remWord#` y#)
+ | otherwise = divZeroError "mod{Word16}" x
+
quotRem (W16# x) (W16# y) = (W16# (x `quotWord#` y), W16# (x `remWord#` y))
divMod (W16# x) (W16# y) = (W16# (x `quotWord#` y), W16# (x `remWord#` y))
- toInteger (W16# x) = word2Integer# x
+
+ toInteger (W16# x) = word2Integer x
toInt x = word16ToInt x
instance Ix Word16 where
range (m,n) = [m..n]
- index b@(m,n) i
+ index b@(m,_) i
| inRange b i = word16ToInt (i - m)
- | otherwise = error (showString "Ix{Word16}.index: Index " .
- showParen True (showsPrec 0 i) .
- showString " out of range " $
- showParen True (showsPrec 0 b) "")
+ | otherwise = indexError i b "Word16"
inRange (m,n) i = m <= i && i <= n
instance Enum Word16 where
- toEnum (I# i) = W16# (intToWord16# i)
- fromEnum (W16# w) = I# (word2Int# w)
- enumFrom c = map toEnum [fromEnum c .. fromEnum (maxBound::Word16)]
- enumFromThen c d = map toEnum [fromEnum c, fromEnum d .. fromEnum (last::Word16)]
- where last = if d < c then minBound else maxBound
+ succ w
+ | w == maxBound = succError "Word16"
+ | otherwise = w+1
+ pred w
+ | w == minBound = predError "Word16"
+ | otherwise = w-1
+
+ toEnum i@(I# i#)
+ | i >= toInt (minBound::Word16) && i <= toInt (maxBound::Word16)
+ = W16# (intToWord16# i#)
+ | otherwise
+ = toEnumError "Word16" i (minBound::Word16,maxBound::Word16)
+
+ fromEnum (W16# w) = I# (word2Int# w)
+ enumFrom c = map toEnum [fromEnum c .. fromEnum (maxBound::Word16)]
+ enumFromThen c d = map toEnum [fromEnum c, fromEnum d .. fromEnum last]
+ where
+ last :: Word16
+ last
+ | d < c = minBound
+ | otherwise = maxBound
instance Read Word16 where
- readsPrec p = readDec
+ readsPrec _ = readDec
instance Show Word16 where
- showsPrec p = showInt
+ showsPrec _ = showInt
instance Bits Word16 where
(W16# x) .&. (W16# y) = W16# (x `and#` y)
wordToWord32# :: Word# -> Word#
#if WORD_SIZE_IN_BYTES == 8
-intToWord32# i# = (int2Word# i#) `and#` (int2Word# 0xffffffff)
-wordToWord32# w# = w# `and#` (int2Word# 0xffffffff)
+intToWord32# i# = (int2Word# i#) `and#` (int2Word# 0xffffffff#)
+wordToWord32# w# = w# `and#` (int2Word# 0xffffffff#)
+wordToWord64# w# = w#
#else
intToWord32# i# = int2Word# i#
wordToWord32# w# = w#
toRational x = toInteger x % 1
instance Integral Word32 where
- div x y = quotWord32 x y
- quot x y = quotWord32 x y
- rem x y = remWord32 x y
- mod x y = remWord32 x y
+ div x y
+ | y /= 0 = quotWord32 x y
+ | otherwise = divZeroError "div{Word32}" x
+
+ quot x y
+ | y /= 0 = quotWord32 x y
+ | otherwise = divZeroError "quot{Word32}" x
+
+ rem x y
+ | y /= 0 = remWord32 x y
+ | otherwise = divZeroError "rem{Word32}" x
+
+ mod x y
+ | y /= 0 = remWord32 x y
+ | otherwise = divZeroError "mod{Word32}" x
+
quotRem a b = (a `quotWord32` b, a `remWord32` b)
divMod x y = quotRem x y
- toInteger (W32# x) = word2Integer# x
+
+ toInteger (W32# x) = word2Integer x
toInt (W32# x) = I# (word2Int# x)
{-# INLINE quotWord32 #-}
{-# INLINE remWord32 #-}
+remWord32, quotWord32 :: Word32 -> Word32 -> Word32
(W32# x) `quotWord32` (W32# y) = W32# (x `quotWord#` y)
(W32# x) `remWord32` (W32# y) = W32# (x `remWord#` y)
instance Ix Word32 where
range (m,n) = [m..n]
- index b@(m,n) i
+ index b@(m,_) i
| inRange b i = word32ToInt (i - m)
- | otherwise = error (showString "Ix{Word32}.index: Index " .
- showParen True (showsPrec 0 i) .
- showString " out of range " $
- showParen True (showsPrec 0 b) "")
+ | otherwise = indexError i b "Word32"
inRange (m,n) i = m <= i && i <= n
instance Enum Word32 where
- toEnum = intToWord32
- fromEnum = word32ToInt -- lossy, don't use.
- enumFrom w = eft32 w 1
- enumFromTo w1 w2 = eftt32 w1 1 (> w2)
- enumFromThen w1 w2 = eftt32 w1 (w2 - w1) (>last)
- where
+ succ w
+ | w == maxBound = succError "Word32"
+ | otherwise = w+1
+ pred w
+ | w == minBound = predError "Word32"
+ | otherwise = w-1
+
+ -- the toEnum/fromEnum will fail if the mapping isn't legal,
+ -- use the intTo* & *ToInt coercion functions to 'bypass' these range checks.
+ toEnum x
+ | x >= 0 = intToWord32 x
+ | otherwise
+ = toEnumError "Word32" x (minBound::Word32,maxBound::Word32)
+
+ fromEnum x
+ | x <= intToWord32 (maxBound::Int)
+ = word32ToInt x
+ | otherwise
+ = fromEnumError "Word32" x
+
+ enumFrom w = [w .. maxBound]
+ enumFromTo w1 w2
+ | w1 <= w2 = eftt32 True{-increasing-} w1 diff_f last
+ | otherwise = []
+ where
+ last = (> w2)
+ diff_f x = x + 1
+
+ enumFromThen w1 w2 = [w1,w2 .. last]
+ where
+ last :: Word32
last
- | w1 < w2 = maxBound::Word32
+ | w1 <=w2 = maxBound
| otherwise = minBound
-eftt32 :: Word32 -> Word32 -> (Word32->Bool) -> [Word32]
-eftt32 now step done = go now
+ enumFromThenTo w1 w2 wend = eftt32 increasing w1 step_f last
+ where
+ increasing = w1 <= w2
+ diff1 = w2 - w1
+ diff2 = w1 - w2
+
+ last
+ | increasing = (> wend)
+ | otherwise = (< wend)
+
+ step_f
+ | increasing = \ x -> x + diff1
+ | otherwise = \ x -> x - diff2
+
+
+eftt32 :: Bool -> Word32 -> (Word32 -> Word32) -> (Word32-> Bool) -> [Word32]
+eftt32 increasing init stepper done = go init
where
- go now
- | done now = []
- | otherwise = now : go (now+step)
+ go now
+ | done now = []
+ | increasing && now > nxt = [now] -- oflow
+ | not increasing && now < nxt = [now] -- uflow
+ | otherwise = now : go nxt
+ where
+ nxt = stepper now
-eft32 :: Word32 -> Word32 -> [Word32]
-eft32 now step = go now
- where
- go x
- | x == maxBound = [x]
- | otherwise = x:go (x+step)
instance Read Word32 where
- readsPrec p = readDec
+ readsPrec _ = readDec
instance Show Word32 where
- showsPrec p = showInt
+ showsPrec _ = showInt
instance Bits Word32 where
(W32# x) .&. (W32# y) = W32# (x `and#` y)
\begin{code}
#if WORD_SIZE_IN_BYTES == 8
-data Word64 = W64# Word#
+--data Word64 = W64# Word#
word32ToWord64 :: Word32 -> Word64
word32ToWord64 (W32 w#) = W64# w#
+word8ToWord64 :: Word8 -> Word64
+word8ToWord64 (W8# w#) = W64# w#
+
+word64ToWord8 :: Word64 -> Word8
+word64ToWord8 (W64# w#) = W8# (w# `and#` (int2Word# 0xff#))
+
+word16ToWord64 :: Word16 -> Word64
+word16ToWord64 (W16# w#) = W64# w#
+
+word64ToWord16 :: Word64 -> Word16
+word64ToWord16 (W64# w#) = W16# (w# `and#` (int2Word# 0xffff#))
+
wordToWord32# :: Word# -> Word#
wordToWord32# w# = w# `and#` (case (maxBound::Word32) of W# x# -> x#)
fromInteger (J# a# s# d#) = W64# (integer2Word# a# s# d#)
fromInt = intToWord64
-instance Bounded Word64 where
- minBound = 0
- maxBound = minBound - 1
-
-instance Real Word64 where
- toRational x = toInteger x % 1
-
-- Note: no need to mask results here
-- as they cannot overflow.
instance Integral Word64 where
- div (W64# x) (W64# y) = W64# (x `quotWord#` y)
- quot (W64# x) (W64# y) = W64# (x `quotWord#` y)
- rem (W64# x) (W64# y) = W64# (x `remWord#` y)
- mod (W64# x) (W64# y) = W64# (x `remWord#` y)
- quotRem (W64# x) (W64# y) = (W64# (x `quotWord#` y), W64# (x `remWord#` y))
- divMod (W64# x) (W64# y) = (W64# (x `quotWord#` y), W64# (x `remWord#` y))
- toInteger (W64# x) = word2Integer# x
- toInt x = word64ToInt x
+ div x@(W64# x#) (W64# y#)
+ | y# `neWord#` (int2Word# 0#) = W64# (x# `quotWord#` y#)
+ | otherwise = divZeroError "div{Word64}" x
-instance Ix Word64 where
- range (m,n) = [m..n]
- index b@(m,n) i
- | inRange b i = word64ToInt (i-m)
- | otherwise = error (showString "Ix{Word64}.index: Index " .
- showParen True (showsPrec 0 i) .
- showString " out of range " $
- showParen True (showsPrec 0 b) "")
- inRange (m,n) i = m <= i && i <= n
+ quot x@(W64# x#) (W64# y#)
+ | y# `neWord#` (int2Word# 0#) = W64# (x# `quotWord#` y#)
+ | otherwise = divZeroError "quot{Word64}" x
-instance Enum Word64 where
- toEnum (I# i) = W64# (intToWord# i)
- fromEnum (W64# w) = I# (word2Int# w) -- lossy, don't use.
- enumFrom w = eft64 w 1
- enumFromTo w1 w2 = eftt64 w1 1 (> w2)
- enumFromThen w1 w2 = eftt64 w1 (w2 - w1) (>last)
- where
- last
- | w1 < w2 = maxBound::Word64
- | otherwise = minBound
+ rem x@(W64# x#) (W64# y#)
+ | y# `neWord#` (int2Word# 0#) = W64# (x# `remWord#` y#)
+ | otherwise = divZeroError "rem{Word64}" x
-instance Read Word64 where
- readsPrec p = readDec
+ mod (W64# x) (W64# y)
+ | y# `neWord#` (int2Word# 0#) = W64# (x `remWord#` y)
+ | otherwise = divZeroError "mod{Word64}" x
-instance Show Word64 where
- showsPrec p = showInt
+ quotRem (W64# x) (W64# y) = (W64# (x `quotWord#` y), W64# (x `remWord#` y))
+ divMod (W64# x) (W64# y) = (W64# (x `quotWord#` y), W64# (x `remWord#` y))
+
+ toInteger (W64# x) = word2Integer# x
+ toInt x = word64ToInt x
instance Bits Word64 where
word64ToWord32 :: Word64 -> Word32
word64ToWord32 (W64# w#) = W32# (word64ToWord# w#)
+word8ToWord64 :: Word8 -> Word64
+word8ToWord64 (W8# w#) = W64# (wordToWord64# w#)
+
+word64ToWord8 :: Word64 -> Word8
+word64ToWord8 (W64# w#) = W8# ((word64ToWord# w#) `and#` (int2Word# 0xff#))
+
+word16ToWord64 :: Word16 -> Word64
+word16ToWord64 (W16# w#) = W64# (wordToWord64# w#)
+
+word64ToWord16 :: Word64 -> Word16
+word64ToWord16 (W64# w#) = W16# ((word64ToWord# w#) `and#` (int2Word# 0xffff#))
+
+
word64ToInteger :: Word64 -> Integer
-word64ToInteger (W64# w#) = word64ToInteger# w#
+word64ToInteger (W64# w#) =
+ case word64ToInteger# w# of
+ (# a#, s#, p# #) -> J# a# s# p#
word64ToInt :: Word64 -> Int
word64ToInt w =
case w `quotRem` 0x100000000 of
- (h,l) -> toInt (word64ToWord32 l)
+ (_,l) -> toInt (word64ToWord32 l)
intToWord64# :: Int# -> Word64#
intToWord64# i# = wordToWord64# (int2Word# i#)
integerToWord64 :: Integer -> Word64
integerToWord64 (J# a# s# d#) = W64# (integerToWord64# a# s# d#)
-instance Show Word64 where
- showsPrec p x = showsPrec p (word64ToInteger x)
-
-instance Read Word64 where
- readsPrec p s = [ (integerToWord64 x,r) | (x,r) <- readDec s ]
-
instance Eq Word64 where
(W64# x) == (W64# y) = x `eqWord64#` y
(W64# x) /= (W64# y) = not (x `eqWord64#` y)
fromInteger i = integerToWord64 i
fromInt = intToWord64
-instance Bounded Word64 where
- minBound = 0
- maxBound = minBound - 1
-
-instance Real Word64 where
- toRational x = toInteger x % 1
-
-- Note: no need to mask results here
-- as they cannot overflow.
+-- ToDo: protect against div by zero.
instance Integral Word64 where
div (W64# x) (W64# y) = W64# (x `quotWord64#` y)
quot (W64# x) (W64# y) = W64# (x `quotWord64#` y)
toInt x = word64ToInt x
-instance Ix Word64 where
- range (m,n) = [m..n]
- index b@(m,n) i
- | inRange b i = word64ToInt (i-m)
- | otherwise = error (showString "Ix{Word64}.index: Index " .
- showParen True (showsPrec 0 i) .
- showString " out of range " $
- showParen True (showsPrec 0 b) "")
- inRange (m,n) i = m <= i && i <= n
-
-instance Enum Word64 where
- toEnum (I# i) = W64# (intToWord64# i)
- fromEnum (W64# w) = I# (word2Int# (word64ToWord# w)) -- lossy, don't use.
- enumFrom w = eft64 w 1
- enumFromTo w1 w2 = eftt64 w1 1 (> w2)
- enumFromThen w1 w2 = eftt64 w1 (w2 - w1) (>last)
- where
- last
- | w1 < w2 = maxBound::Word64
- | otherwise = minBound
-
instance Bits Word64 where
(W64# x) .&. (W64# y) = W64# (x `and64#` y)
(W64# x) .|. (W64# y) = W64# (x `or64#` y)
bitSize _ = 64
isSigned _ = False
+compareWord64# :: Word64# -> Word64# -> Ordering
compareWord64# i# j#
| i# `ltWord64#` j# = LT
| i# `eqWord64#` j# = EQ
W64# w# -> w#
word64ToWord# :: Word64# -> Word#
-word64ToWord# w# =
- case (unsafePerformIO (_ccall_ stg_word64ToWord w#)) of
+word64ToWord# w64# =
+ case (unsafePerformIO (_ccall_ stg_word64ToWord w64#)) of
W# w# -> w#
wordToWord64# :: Word# -> Word64#
wordToWord64# w# =
case (unsafePerformIO (_ccall_ stg_wordToWord64 w#)) of
- W64# w# -> w#
+ W64# w64# -> w64#
word64ToInt64# :: Word64# -> Int64#
-word64ToInt64# w# =
- case (unsafePerformIO (_ccall_ stg_word64ToInt64 w#)) of
+word64ToInt64# w64# =
+ case (unsafePerformIO (_ccall_ stg_word64ToInt64 w64#)) of
I64# i# -> i#
int64ToWord64# :: Int64# -> Word64#
-int64ToWord64# w# =
- case (unsafePerformIO (_ccall_ stg_int64ToWord64 w#)) of
+int64ToWord64# i64# =
+ case (unsafePerformIO (_ccall_ stg_int64ToWord64 i64#)) of
W64# w# -> w#
intToInt64# :: Int# -> Int64#
intToInt64# i# =
case (unsafePerformIO (_ccall_ stg_intToInt64 i#)) of
- I64# i# -> i#
+ I64# i64# -> i64#
#endif
+instance Enum Word64 where
+ succ w
+ | w == maxBound = succError "Word64"
+ | otherwise = w+1
+ pred w
+ | w == minBound = predError "Word64"
+ | otherwise = w-1
+
+ toEnum i
+ | i >= 0 = intToWord64 i
+ | otherwise
+ = toEnumError "Word64" i (minBound::Word64,maxBound::Word64)
+
+ fromEnum w
+ | w <= intToWord64 (maxBound::Int)
+ = word64ToInt w
+ | otherwise
+ = fromEnumError "Word64" w
+
+ enumFrom e1 = map integerToWord64 [word64ToInteger e1 .. word64ToInteger maxBound]
+ enumFromTo e1 e2 = map integerToWord64 [word64ToInteger e1 .. word64ToInteger e2]
+ enumFromThen e1 e2 = map integerToWord64 [word64ToInteger e1, word64ToInteger e2 .. word64ToInteger last]
+ where
+ last :: Word64
+ last
+ | e2 < e1 = minBound
+ | otherwise = maxBound
+
+ enumFromThenTo e1 e2 e3 = map integerToWord64 [word64ToInteger e1, word64ToInteger e2 .. word64ToInteger e3]
+
+instance Show Word64 where
+ showsPrec p x = showsPrec p (word64ToInteger x)
+
+instance Read Word64 where
+ readsPrec _ s = [ (integerToWord64 x,r) | (x,r) <- readDec s ]
+
+instance Ix Word64 where
+ range (m,n) = [m..n]
+ index b@(m,_) i
+ | inRange b i = word64ToInt (i-m)
+ | otherwise = indexError i b "Word64"
+ inRange (m,n) i = m <= i && i <= n
+
+instance Bounded Word64 where
+ minBound = 0
+ maxBound = minBound - 1
+
+instance Real Word64 where
+ toRational x = toInteger x % 1
+
sizeofWord64 :: Word32
sizeofWord64 = 8
--- Enum Word64 helper funs:
-
-eftt64 :: Word64 -> Word64 -> (Word64->Bool) -> [Word64]
-eftt64 now step done = go now
- where
- go now
- | done now = []
- | otherwise = now : go (now+step)
-
-eft64 :: Word64 -> Word64 -> [Word64]
-eft64 now step = go now
- where
- go x
- | x == maxBound = [x]
- | otherwise = x:go (x+step)
\end{code}
\begin{code}
wordToWord8 :: Word -> Word8
-word8ToWord :: Word8 -> Word
wordToWord16 :: Word -> Word16
-word16ToWord :: Word16 -> Word
wordToWord32 :: Word -> Word32
+
+word8ToWord :: Word8 -> Word
+word16ToWord :: Word16 -> Word
word32ToWord :: Word32 -> Word
-word8ToWord (W8# w#) = W# w#
+word8ToWord# :: Word8 -> Word#
+word16ToWord# :: Word16 -> Word#
+word32ToWord# :: Word32 -> Word#
+
+word8ToWord (W8# w#) = W# w#
+word8ToWord# (W8# w#) = w#
+
wordToWord8 (W# w#) = W8# (w# `and#` (case (maxBound::Word8) of W8# x# -> x#))
-word16ToWord (W16# w#) = W# w#
+word16ToWord (W16# w#) = W# w#
+word16ToWord# (W16# w#) = w#
+
wordToWord16 (W# w#) = W16# (w# `and#` (case (maxBound::Word16) of W16# x# -> x#))
-word32ToWord (W32# w#) = W# w#
wordToWord32 (W# w#) = W32# (w# `and#` (case (maxBound::Word32) of W32# x# -> x#))
+word32ToWord (W32# w#) = W# w#
+word32ToWord# (W32# w#) = w#
+
wordToWord64 :: Word -> Word64
wordToWord64 (W# w#) = W64# (wordToWord64# w#)
used in the implementation.
\begin{code}
+signumReal :: (Ord a, Num a) => a -> a
signumReal x | x == 0 = 0
| x > 0 = 1
| otherwise = -1
\begin{code}
readWord8OffAddr :: Addr -> Int -> IO Word8
-readWord8OffAddr a i = _casm_ `` %r=(StgWord8)(((StgWord8*)%0)[(StgInt)%1]); '' a i
+readWord8OffAddr a i = _casm_ `` %r=(StgNat8)(((StgNat8*)%0)[(StgInt)%1]); '' a i
readWord16OffAddr :: Addr -> Int -> IO Word16
-readWord16OffAddr a i = _casm_ `` %r=(StgWord16)(((StgWord16*)%0)[(StgInt)%1]); '' a i
+readWord16OffAddr a i = _casm_ `` %r=(StgNat16)(((StgNat16*)%0)[(StgInt)%1]); '' a i
readWord32OffAddr :: Addr -> Int -> IO Word32
-readWord32OffAddr a i = _casm_ `` %r=(StgWord32)(((StgWord32*)%0)[(StgInt)%1]); '' a i
+readWord32OffAddr a i = _casm_ `` %r=(StgNat32)(((StgNat32*)%0)[(StgInt)%1]); '' a i
readWord64OffAddr :: Addr -> Int -> IO Word64
#if WORD_SIZE_IN_BYTES==8
readWord64OffAddr a i = _casm_ `` %r=(StgWord)(((StgWord*)%0)[(StgInt)%1]); '' a i
#else
-readWord64OffAddr a i = _casm_ `` %r=(StgWord64)(((StgWord64*)%0)[(StgInt)%1]); '' a i
+readWord64OffAddr a i = _casm_ `` %r=(StgNat64)(((StgNat64*)%0)[(StgInt)%1]); '' a i
#endif
#ifndef __PARALLEL_HASKELL__
readWord8OffForeignObj :: ForeignObj -> Int -> IO Word8
-readWord8OffForeignObj fo i = _casm_ `` %r=(StgWord8)(((StgWord8*)%0)[(StgInt)%1]); '' fo i
+readWord8OffForeignObj fo i = _casm_ `` %r=(StgNat8)(((StgNat8*)%0)[(StgInt)%1]); '' fo i
readWord16OffForeignObj :: ForeignObj -> Int -> IO Word16
-readWord16OffForeignObj fo i = _casm_ `` %r=(StgWord16)(((StgWord16*)%0)[(StgInt)%1]); '' fo i
+readWord16OffForeignObj fo i = _casm_ `` %r=(StgNat16)(((StgNat16*)%0)[(StgInt)%1]); '' fo i
readWord32OffForeignObj :: ForeignObj -> Int -> IO Word32
-readWord32OffForeignObj fo i = _casm_ `` %r=(StgWord32)(((StgWord32*)%0)[(StgInt)%1]); '' fo i
+readWord32OffForeignObj fo i = _casm_ `` %r=(StgNat32)(((StgNat32*)%0)[(StgInt)%1]); '' fo i
readWord64OffForeignObj :: ForeignObj -> Int -> IO Word64
#if WORD_SIZE_IN_BYTES==8
readWord64OffForeignObj fo i = _casm_ `` %r=(StgWord)(((StgWord*)%0)[(StgInt)%1]); '' fo i
#else
-readWord64OffForeignObj fo i = _casm_ `` %r=(StgWord64)(((StgWord64*)%0)[(StgInt)%1]); '' fo i
+readWord64OffForeignObj fo i = _casm_ `` %r=(StgNat64)(((StgNat64*)%0)[(StgInt)%1]); '' fo i
#endif
#endif
\begin{code}
writeWord8OffAddr :: Addr -> Int -> Word8 -> IO ()
writeWord8OffAddr (A# a#) (I# i#) (W8# w#) = IO $ \ s# ->
- case (writeCharOffAddr# a# i# (chr# (word2Int# w#)) s#) of s2# -> IOok s2# ()
+ case (writeCharOffAddr# a# i# (chr# (word2Int# w#)) s#) of s2# -> (# s2#, () #)
writeWord16OffAddr :: Addr -> Int -> Word16 -> IO ()
-writeWord16OffAddr a i e = _casm_ `` (((StgWord16*)%0)[(StgInt)%1])=(StgWord16)%2; '' a i e
+writeWord16OffAddr a i e = _casm_ `` (((StgNat16*)%0)[(StgInt)%1])=(StgNat16)%2; '' a i e
writeWord32OffAddr :: Addr -> Int -> Word32 -> IO ()
-writeWord32OffAddr (A# a#) i@(I# i#) (W32# w#) = IO $ \ s# ->
- case (writeWordOffAddr# a# i'# w# s#) of s2# -> IOok s2# ()
+writeWord32OffAddr (A# a#) i (W32# w#) = IO $ \ s# ->
+ case (writeWordOffAddr# a# i'# w# s#) of s2# -> (# s2#, () #)
where
-- adjust index to be in Word units, not Word32 ones.
(I# i'#)
writeWord64OffAddr :: Addr -> Int -> Word64 -> IO ()
#if WORD_SIZE_IN_BYTES==8
writeWord64OffAddr (A# a#) (I# i#) (W64# w#) = IO $ \ s# ->
- case (writeWordOffAddr# a# i# w# s#) of s2# -> IOok s2# ()
+ case (writeWordOffAddr# a# i# w# s#) of s2# -> (# s2#, () #)
#else
writeWord64OffAddr (A# a#) (I# i#) (W64# w#) = IO $ \ s# ->
- case (writeWord64OffAddr# a# i# w# s#) of s2# -> IOok s2# ()
+ case (writeWord64OffAddr# a# i# w# s#) of s2# -> (# s2#, () #)
#endif
#ifndef __PARALLEL_HASKELL__
writeWord8OffForeignObj :: ForeignObj -> Int -> Word8 -> IO ()
-writeWord8OffForeignObj fo i w = _casm_ `` (((StgWord16*)%0)[(StgInt)%1])=(StgWord16)%2; '' fo i w
+writeWord8OffForeignObj fo i w = _casm_ `` (((StgNat16*)%0)[(StgInt)%1])=(StgNat16)%2; '' fo i w
writeWord16OffForeignObj :: ForeignObj -> Int -> Word16 -> IO ()
-writeWord16OffForeignObj fo i w = _casm_ `` (((StgWord16*)%0)[(StgInt)%1])=(StgWord16)%2; '' fo i w
+writeWord16OffForeignObj fo i w = _casm_ `` (((StgNat16*)%0)[(StgInt)%1])=(StgNat16)%2; '' fo i w
writeWord32OffForeignObj :: ForeignObj -> Int -> Word32 -> IO ()
-writeWord32OffForeignObj fo i w = _casm_ `` (((StgWord16*)%0)[(StgInt)%1])=(StgWord16)%2; '' fo i' w
+writeWord32OffForeignObj fo i w = _casm_ `` (((StgNat16*)%0)[(StgInt)%1])=(StgNat16)%2; '' fo i' w
where
-- adjust index to be in Word units, not Word32 ones.
i'
#endif
writeWord64OffForeignObj :: ForeignObj -> Int -> Word64 -> IO ()
-#if WORD_SIZE_IN_BYTES==8
+# if WORD_SIZE_IN_BYTES==8
writeWord64OffForeignObj fo i e = _casm_ `` (((StgWord*)%0)[(StgInt)%1])=(StgWord)%2; '' fo i e
-#else
-writeWord64OffForeignObj fo i e = _casm_ `` (((StgWord64*)%0)[(StgInt)%1])=(StgWord64)%2; '' fo i e
-#endif
+# else
+writeWord64OffForeignObj fo i e = _casm_ `` (((StgNat64*)%0)[(StgInt)%1])=(StgNat64)%2; '' fo i e
+# endif
#endif
\end{code}
+
+Utils for generating friendly error messages.
+
+\begin{code}
+{-# NOINLINE indexError #-}
+indexError :: (Show a) => a -> (a,a) -> String -> b
+indexError i rng tp
+ = error (showString "Ix{" . showString tp . showString "}.index: Index " .
+ showParen True (showsPrec 0 i) .
+ showString " out of range " $
+ showParen True (showsPrec 0 rng) "")
+
+toEnumError :: (Show a,Show b) => String -> a -> (b,b) -> c
+toEnumError inst_ty tag bnds
+ = error ("Enum.toEnum{" ++ inst_ty ++ "}: tag " ++
+ (showParen True (showsPrec 0 tag) $
+ " is outside of bounds " ++
+ show bnds))
+
+fromEnumError :: (Show a,Show b) => String -> a -> b
+fromEnumError inst_ty tag
+ = error ("Enum.fromEnum{" ++ inst_ty ++ "}: value " ++
+ (showParen True (showsPrec 0 tag) $
+ " is outside of Int's bounds " ++
+ show (minBound::Int,maxBound::Int)))
+
+succError :: String -> a
+succError inst_ty
+ = error ("Enum.succ{" ++ inst_ty ++ "}: tried to take `succ' of maxBound")
+
+predError :: String -> a
+predError inst_ty
+ = error ("Enum.pred{" ++ inst_ty ++ "}: tried to take `pred' of minBound")
+
+divZeroError :: (Show a) => String -> a -> b
+divZeroError meth v
+ = error ("Integral." ++ meth ++ ": divide by 0 (" ++ show v ++ " / 0)")
+
+\end{code}
projects / ghc-hetmet.git / blobdiff