{-# OPTIONS_GHC -fno-implicit-prelude #-}
-----------------------------------------------------------------------------
-- |
-- Module : GHC.Word
-- Copyright : (c) The University of Glasgow, 1997-2002
-- License : see libraries/base/LICENSE
--
-- Maintainer : cvs-ghc@haskell.org
-- Stability : internal
-- Portability : non-portable (GHC Extensions)
--
-- Sized unsigned integral types: 'Word', 'Word8', 'Word16', 'Word32', and
-- 'Word64'.
--
-----------------------------------------------------------------------------
#include "MachDeps.h"
-- #hide
module GHC.Word (
Word(..), Word8(..), Word16(..), Word32(..), Word64(..),
toEnumError, fromEnumError, succError, predError)
where
import Data.Bits
import {-# SOURCE #-} GHC.Err
import GHC.Base
import GHC.Enum
import GHC.Num
import GHC.Real
import GHC.Read
import GHC.Arr
import GHC.Show
------------------------------------------------------------------------
-- Helper functions
------------------------------------------------------------------------
{-# NOINLINE toEnumError #-}
toEnumError :: (Show a) => String -> Int -> (a,a) -> b
toEnumError inst_ty i bnds =
error $ "Enum.toEnum{" ++ inst_ty ++ "}: tag (" ++
show i ++
") is outside of bounds " ++
show bnds
{-# NOINLINE fromEnumError #-}
fromEnumError :: (Show a) => String -> a -> b
fromEnumError inst_ty x =
error $ "Enum.fromEnum{" ++ inst_ty ++ "}: value (" ++
show x ++
") is outside of Int's bounds " ++
show (minBound::Int, maxBound::Int)
{-# NOINLINE succError #-}
succError :: String -> a
succError inst_ty =
error $ "Enum.succ{" ++ inst_ty ++ "}: tried to take `succ' of maxBound"
{-# NOINLINE predError #-}
predError :: String -> a
predError inst_ty =
error $ "Enum.pred{" ++ inst_ty ++ "}: tried to take `pred' of minBound"
------------------------------------------------------------------------
-- type Word
------------------------------------------------------------------------
-- |A 'Word' is an unsigned integral type, with the same size as 'Int'.
data Word = W# Word# deriving (Eq, Ord)
instance Show Word where
showsPrec p x = showsPrec p (toInteger x)
instance Num Word where
(W# x#) + (W# y#) = W# (x# `plusWord#` y#)
(W# x#) - (W# y#) = W# (x# `minusWord#` y#)
(W# x#) * (W# y#) = W# (x# `timesWord#` y#)
negate (W# x#) = W# (int2Word# (negateInt# (word2Int# x#)))
abs x = x
signum 0 = 0
signum _ = 1
fromInteger (S# i#) = W# (int2Word# i#)
fromInteger (J# s# d#) = W# (integer2Word# s# d#)
instance Real Word where
toRational x = toInteger x % 1
instance Enum Word where
succ x
| x /= maxBound = x + 1
| otherwise = succError "Word"
pred x
| x /= minBound = x - 1
| otherwise = predError "Word"
toEnum i@(I# i#)
| i >= 0 = W# (int2Word# i#)
| otherwise = toEnumError "Word" i (minBound::Word, maxBound::Word)
fromEnum x@(W# x#)
| x <= fromIntegral (maxBound::Int)
= I# (word2Int# x#)
| otherwise = fromEnumError "Word" x
enumFrom = integralEnumFrom
enumFromThen = integralEnumFromThen
enumFromTo = integralEnumFromTo
enumFromThenTo = integralEnumFromThenTo
instance Integral Word where
quot x@(W# x#) y@(W# y#)
| y /= 0 = W# (x# `quotWord#` y#)
| otherwise = divZeroError
rem x@(W# x#) y@(W# y#)
| y /= 0 = W# (x# `remWord#` y#)
| otherwise = divZeroError
div x@(W# x#) y@(W# y#)
| y /= 0 = W# (x# `quotWord#` y#)
| otherwise = divZeroError
mod x@(W# x#) y@(W# y#)
| y /= 0 = W# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem x@(W# x#) y@(W# y#)
| y /= 0 = (W# (x# `quotWord#` y#), W# (x# `remWord#` y#))
| otherwise = divZeroError
divMod x@(W# x#) y@(W# y#)
| y /= 0 = (W# (x# `quotWord#` y#), W# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W# x#)
| i# >=# 0# = S# i#
| otherwise = case word2Integer# x# of (# s, d #) -> J# s d
where
i# = word2Int# x#
instance Bounded Word where
minBound = 0
-- use unboxed literals for maxBound, because GHC doesn't optimise
-- (fromInteger 0xffffffff :: Word).
#if WORD_SIZE_IN_BITS == 31
maxBound = W# (int2Word# 0x7FFFFFFF#)
#elif WORD_SIZE_IN_BITS == 32
maxBound = W# (int2Word# 0xFFFFFFFF#)
#else
maxBound = W# (int2Word# 0xFFFFFFFFFFFFFFFF#)
#endif
instance Ix Word where
range (m,n) = [m..n]
unsafeIndex b@(m,_) i = fromIntegral (i - m)
inRange (m,n) i = m <= i && i <= n
instance Read Word where
readsPrec p s = [(fromInteger x, r) | (x, r) <- readsPrec p s]
instance Bits Word where
{-# INLINE shift #-}
(W# x#) .&. (W# y#) = W# (x# `and#` y#)
(W# x#) .|. (W# y#) = W# (x# `or#` y#)
(W# x#) `xor` (W# y#) = W# (x# `xor#` y#)
complement (W# x#) = W# (x# `xor#` mb#) where W# mb# = maxBound
(W# x#) `shift` (I# i#)
| i# >=# 0# = W# (x# `shiftL#` i#)
| otherwise = W# (x# `shiftRL#` negateInt# i#)
(W# x#) `rotate` (I# i#)
| i'# ==# 0# = W# x#
| otherwise = W# ((x# `uncheckedShiftL#` i'#) `or#` (x# `uncheckedShiftRL#` (wsib -# i'#)))
where
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
"fromIntegral/Int->Word" fromIntegral = \(I# x#) -> W# (int2Word# x#)
"fromIntegral/Word->Int" fromIntegral = \(W# x#) -> I# (word2Int# x#)
"fromIntegral/Word->Word" fromIntegral = id :: Word -> Word
#-}
------------------------------------------------------------------------
-- type Word8
------------------------------------------------------------------------
-- Word8 is represented in the same way as Word. Operations may assume
-- and must ensure that it holds only values from its logical range.
data Word8 = W8# Word# deriving (Eq, Ord)
-- ^ 8-bit unsigned integer type
instance Show Word8 where
showsPrec p x = showsPrec p (fromIntegral x :: Int)
instance Num Word8 where
(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# (narrow8Word# (int2Word# i#))
fromInteger (J# s# d#) = W8# (narrow8Word# (integer2Word# s# d#))
instance Real Word8 where
toRational x = toInteger x % 1
instance Enum Word8 where
succ x
| x /= maxBound = x + 1
| otherwise = succError "Word8"
pred x
| x /= minBound = x - 1
| otherwise = predError "Word8"
toEnum i@(I# i#)
| i >= 0 && i <= fromIntegral (maxBound::Word8)
= W8# (int2Word# i#)
| otherwise = toEnumError "Word8" i (minBound::Word8, maxBound::Word8)
fromEnum (W8# x#) = I# (word2Int# x#)
enumFrom = boundedEnumFrom
enumFromThen = boundedEnumFromThen
instance Integral Word8 where
quot x@(W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `quotWord#` y#)
| otherwise = divZeroError
rem x@(W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `remWord#` y#)
| otherwise = divZeroError
div x@(W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `quotWord#` y#)
| otherwise = divZeroError
mod x@(W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem x@(W8# x#) y@(W8# y#)
| y /= 0 = (W8# (x# `quotWord#` y#), W8# (x# `remWord#` y#))
| otherwise = divZeroError
divMod x@(W8# x#) y@(W8# y#)
| y /= 0 = (W8# (x# `quotWord#` y#), W8# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W8# x#) = S# (word2Int# x#)
instance Bounded Word8 where
minBound = 0
maxBound = 0xFF
instance Ix Word8 where
range (m,n) = [m..n]
unsafeIndex b@(m,_) i = fromIntegral (i - m)
inRange (m,n) i = m <= i && i <= n
instance Read Word8 where
readsPrec p s = [(fromIntegral (x::Int), r) | (x, r) <- readsPrec p s]
instance Bits Word8 where
{-# INLINE shift #-}
(W8# x#) .&. (W8# y#) = W8# (x# `and#` y#)
(W8# x#) .|. (W8# y#) = W8# (x# `or#` y#)
(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# (narrow8Word# (x# `shiftL#` i#))
| otherwise = W8# (x# `shiftRL#` negateInt# i#)
(W8# x#) `rotate` (I# i#)
| i'# ==# 0# = W8# x#
| otherwise = W8# (narrow8Word# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (8# -# i'#))))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 7#)
bitSize _ = 8
isSigned _ = False
{-# 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# (narrow8Word# x#)
"fromIntegral/Word8->a" fromIntegral = \(W8# x#) -> fromIntegral (W# x#)
#-}
------------------------------------------------------------------------
-- type Word16
------------------------------------------------------------------------
-- Word16 is represented in the same way as Word. Operations may assume
-- and must ensure that it holds only values from its logical range.
data Word16 = W16# Word# deriving (Eq, Ord)
-- ^ 16-bit unsigned integer type
instance Show Word16 where
showsPrec p x = showsPrec p (fromIntegral x :: Int)
instance Num Word16 where
(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# (narrow16Word# (int2Word# i#))
fromInteger (J# s# d#) = W16# (narrow16Word# (integer2Word# s# d#))
instance Real Word16 where
toRational x = toInteger x % 1
instance Enum Word16 where
succ x
| x /= maxBound = x + 1
| otherwise = succError "Word16"
pred x
| x /= minBound = x - 1
| otherwise = predError "Word16"
toEnum i@(I# i#)
| i >= 0 && i <= fromIntegral (maxBound::Word16)
= W16# (int2Word# i#)
| otherwise = toEnumError "Word16" i (minBound::Word16, maxBound::Word16)
fromEnum (W16# x#) = I# (word2Int# x#)
enumFrom = boundedEnumFrom
enumFromThen = boundedEnumFromThen
instance Integral Word16 where
quot x@(W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `quotWord#` y#)
| otherwise = divZeroError
rem x@(W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `remWord#` y#)
| otherwise = divZeroError
div x@(W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `quotWord#` y#)
| otherwise = divZeroError
mod x@(W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem x@(W16# x#) y@(W16# y#)
| y /= 0 = (W16# (x# `quotWord#` y#), W16# (x# `remWord#` y#))
| otherwise = divZeroError
divMod x@(W16# x#) y@(W16# y#)
| y /= 0 = (W16# (x# `quotWord#` y#), W16# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W16# x#) = S# (word2Int# x#)
instance Bounded Word16 where
minBound = 0
maxBound = 0xFFFF
instance Ix Word16 where
range (m,n) = [m..n]
unsafeIndex b@(m,_) i = fromIntegral (i - m)
inRange (m,n) i = m <= i && i <= n
instance Read Word16 where
readsPrec p s = [(fromIntegral (x::Int), r) | (x, r) <- readsPrec p s]
instance Bits Word16 where
{-# INLINE shift #-}
(W16# x#) .&. (W16# y#) = W16# (x# `and#` y#)
(W16# x#) .|. (W16# y#) = W16# (x# `or#` y#)
(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# (narrow16Word# (x# `shiftL#` i#))
| otherwise = W16# (x# `shiftRL#` negateInt# i#)
(W16# x#) `rotate` (I# i#)
| i'# ==# 0# = W16# x#
| otherwise = W16# (narrow16Word# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (16# -# i'#))))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 15#)
bitSize _ = 16
isSigned _ = False
{-# RULES
"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# (narrow16Word# x#)
"fromIntegral/Word16->a" fromIntegral = \(W16# x#) -> fromIntegral (W# x#)
#-}
------------------------------------------------------------------------
-- type Word32
------------------------------------------------------------------------
#if WORD_SIZE_IN_BITS < 32
data Word32 = W32# Word32#
-- ^ 32-bit unsigned integer type
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
rem x@(W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `remWord32#` y#)
| otherwise = divZeroError
div x@(W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `quotWord32#` y#)
| otherwise = divZeroError
mod x@(W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `remWord32#` y#)
| otherwise = divZeroError
quotRem x@(W32# x#) y@(W32# y#)
| y /= 0 = (W32# (x# `quotWord32#` y#), W32# (x# `remWord32#` y#))
| otherwise = divZeroError
divMod x@(W32# x#) y@(W32# y#)
| y /= 0 = (W32# (x# `quotWord32#` y#), W32# (x# `remWord32#` y#))
| otherwise = divZeroError
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
{-# INLINE shift #-}
(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#)
| i'# ==# 0# = W32# x#
| otherwise = W32# ((x# `shiftL32#` i'#) `or32#`
(x# `shiftRL32#` (32# -# i'#)))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 31#)
bitSize _ = 32
isSigned _ = False
foreign import unsafe "stg_eqWord32" eqWord32# :: Word32# -> Word32# -> Bool
foreign import unsafe "stg_neWord32" neWord32# :: Word32# -> Word32# -> Bool
foreign import unsafe "stg_ltWord32" ltWord32# :: Word32# -> Word32# -> Bool
foreign import unsafe "stg_leWord32" leWord32# :: Word32# -> Word32# -> Bool
foreign import unsafe "stg_gtWord32" gtWord32# :: Word32# -> Word32# -> Bool
foreign import unsafe "stg_geWord32" geWord32# :: Word32# -> Word32# -> Bool
foreign import unsafe "stg_int32ToWord32" int32ToWord32# :: Int32# -> Word32#
foreign import unsafe "stg_word32ToInt32" word32ToInt32# :: Word32# -> Int32#
foreign import unsafe "stg_intToInt32" intToInt32# :: Int# -> Int32#
foreign import unsafe "stg_wordToWord32" wordToWord32# :: Word# -> Word32#
foreign import unsafe "stg_word32ToWord" word32ToWord# :: Word32# -> Word#
foreign import unsafe "stg_plusInt32" plusInt32# :: Int32# -> Int32# -> Int32#
foreign import unsafe "stg_minusInt32" minusInt32# :: Int32# -> Int32# -> Int32#
foreign import unsafe "stg_timesInt32" timesInt32# :: Int32# -> Int32# -> Int32#
foreign import unsafe "stg_negateInt32" negateInt32# :: Int32# -> Int32#
foreign import unsafe "stg_quotWord32" quotWord32# :: Word32# -> Word32# -> Word32#
foreign import unsafe "stg_remWord32" remWord32# :: Word32# -> Word32# -> Word32#
foreign import unsafe "stg_and32" and32# :: Word32# -> Word32# -> Word32#
foreign import unsafe "stg_or32" or32# :: Word32# -> Word32# -> Word32#
foreign import unsafe "stg_xor32" xor32# :: Word32# -> Word32# -> Word32#
foreign import unsafe "stg_not32" not32# :: Word32# -> Word32#
foreign import unsafe "stg_shiftL32" shiftL32# :: Word32# -> Int# -> Word32#
foreign import unsafe "stg_shiftRL32" 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_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)
-- ^ 32-bit unsigned integer type
instance Num Word32 where
(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# (narrow32Word# (int2Word# i#))
fromInteger (J# s# d#) = W32# (narrow32Word# (integer2Word# 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
#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_BITS == 32
fromEnum x@(W32# x#)
| x <= fromIntegral (maxBound::Int)
= I# (word2Int# x#)
| otherwise = fromEnumError "Word32" x
enumFrom = integralEnumFrom
enumFromThen = integralEnumFromThen
enumFromTo = integralEnumFromTo
enumFromThenTo = integralEnumFromThenTo
#else
fromEnum (W32# x#) = I# (word2Int# x#)
enumFrom = boundedEnumFrom
enumFromThen = boundedEnumFromThen
#endif
instance Integral Word32 where
quot x@(W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `quotWord#` y#)
| otherwise = divZeroError
rem x@(W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `remWord#` y#)
| otherwise = divZeroError
div x@(W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `quotWord#` y#)
| otherwise = divZeroError
mod x@(W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem x@(W32# x#) y@(W32# y#)
| y /= 0 = (W32# (x# `quotWord#` y#), W32# (x# `remWord#` y#))
| otherwise = divZeroError
divMod x@(W32# x#) y@(W32# y#)
| y /= 0 = (W32# (x# `quotWord#` y#), W32# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W32# x#)
#if WORD_SIZE_IN_BITS == 32
| i# >=# 0# = S# i#
| otherwise = case word2Integer# x# of (# s, d #) -> J# s d
where
i# = word2Int# x#
#else
= S# (word2Int# x#)
#endif
instance Bits Word32 where
{-# INLINE shift #-}
(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# (narrow32Word# (x# `shiftL#` i#))
| otherwise = W32# (x# `shiftRL#` negateInt# i#)
(W32# x#) `rotate` (I# i#)
| i'# ==# 0# = W32# x#
| otherwise = W32# (narrow32Word# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (32# -# i'#))))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 31#)
bitSize _ = 32
isSigned _ = False
{-# RULES
"fromIntegral/Word8->Word32" fromIntegral = \(W8# x#) -> W32# x#
"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# (narrow32Word# x#)
"fromIntegral/Word32->a" fromIntegral = \(W32# x#) -> fromIntegral (W# x#)
#-}
#endif
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]
unsafeIndex b@(m,_) i = fromIntegral (i - m)
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_BITS < 64
data Word64 = W64# Word64#
-- ^ 64-bit unsigned integer type
instance Eq Word64 where
(W64# x#) == (W64# y#) = x# `eqWord64#` y#
(W64# x#) /= (W64# y#) = x# `neWord64#` y#
instance Ord Word64 where
(W64# x#) < (W64# y#) = x# `ltWord64#` y#
(W64# x#) <= (W64# y#) = x# `leWord64#` y#
(W64# x#) > (W64# y#) = x# `gtWord64#` y#
(W64# x#) >= (W64# y#) = x# `geWord64#` y#
instance Num Word64 where
(W64# x#) + (W64# y#) = W64# (int64ToWord64# (word64ToInt64# x# `plusInt64#` word64ToInt64# y#))
(W64# x#) - (W64# y#) = W64# (int64ToWord64# (word64ToInt64# x# `minusInt64#` word64ToInt64# y#))
(W64# x#) * (W64# y#) = W64# (int64ToWord64# (word64ToInt64# x# `timesInt64#` word64ToInt64# y#))
negate (W64# x#) = W64# (int64ToWord64# (negateInt64# (word64ToInt64# x#)))
abs x = x
signum 0 = 0
signum _ = 1
fromInteger (S# i#) = W64# (int64ToWord64# (intToInt64# i#))
fromInteger (J# s# d#) = W64# (integerToWord64# s# d#)
instance Enum Word64 where
succ x
| x /= maxBound = x + 1
| otherwise = succError "Word64"
pred x
| x /= minBound = x - 1
| otherwise = predError "Word64"
toEnum i@(I# i#)
| i >= 0 = W64# (wordToWord64# (int2Word# i#))
| otherwise = toEnumError "Word64" i (minBound::Word64, maxBound::Word64)
fromEnum x@(W64# x#)
| x <= fromIntegral (maxBound::Int)
= I# (word2Int# (word64ToWord# x#))
| otherwise = fromEnumError "Word64" x
enumFrom = integralEnumFrom
enumFromThen = integralEnumFromThen
enumFromTo = integralEnumFromTo
enumFromThenTo = integralEnumFromThenTo
instance Integral Word64 where
quot x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord64#` y#)
| otherwise = divZeroError
rem x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord64#` y#)
| otherwise = divZeroError
div x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord64#` y#)
| otherwise = divZeroError
mod x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord64#` y#)
| otherwise = divZeroError
quotRem x@(W64# x#) y@(W64# y#)
| y /= 0 = (W64# (x# `quotWord64#` y#), W64# (x# `remWord64#` y#))
| otherwise = divZeroError
divMod x@(W64# x#) y@(W64# y#)
| y /= 0 = (W64# (x# `quotWord64#` y#), W64# (x# `remWord64#` y#))
| otherwise = divZeroError
toInteger x@(W64# x#)
| x <= 0x7FFFFFFF = S# (word2Int# (word64ToWord# x#))
| otherwise = case word64ToInteger# x# of (# s, d #) -> J# s d
instance Bits Word64 where
{-# INLINE shift #-}
(W64# x#) .&. (W64# y#) = W64# (x# `and64#` y#)
(W64# x#) .|. (W64# y#) = W64# (x# `or64#` y#)
(W64# x#) `xor` (W64# y#) = W64# (x# `xor64#` y#)
complement (W64# x#) = W64# (not64# x#)
(W64# x#) `shift` (I# i#)
| i# >=# 0# = W64# (x# `shiftL64#` i#)
| otherwise = W64# (x# `shiftRL64#` negateInt# i#)
(W64# x#) `rotate` (I# i#)
| i'# ==# 0# = W64# x#
| otherwise = W64# ((x# `uncheckedShiftL64#` i'#) `or64#`
(x# `uncheckedShiftRL64#` (64# -# i'#)))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 63#)
bitSize _ = 64
isSigned _ = False
-- give the 64-bit shift operations the same treatment as the 32-bit
-- ones (see GHC.Base), namely we wrap them in tests to catch the
-- cases when we're shifting more than 64 bits to avoid unspecified
-- behaviour in the C shift operations.
shiftL64#, shiftRL64# :: Word64# -> Int# -> Word64#
a `shiftL64#` b | b >=# 64# = wordToWord64# (int2Word# 0#)
| otherwise = a `uncheckedShiftL64#` b
a `shiftRL64#` b | b >=# 64# = wordToWord64# (int2Word# 0#)
| otherwise = a `uncheckedShiftRL64#` b
foreign import ccall unsafe "hs_eqWord64" eqWord64# :: Word64# -> Word64# -> Bool
foreign import ccall unsafe "hs_neWord64" neWord64# :: Word64# -> Word64# -> Bool
foreign import ccall unsafe "hs_ltWord64" ltWord64# :: Word64# -> Word64# -> Bool
foreign import ccall unsafe "hs_leWord64" leWord64# :: Word64# -> Word64# -> Bool
foreign import ccall unsafe "hs_gtWord64" gtWord64# :: Word64# -> Word64# -> Bool
foreign import ccall unsafe "hs_geWord64" geWord64# :: Word64# -> Word64# -> Bool
foreign import ccall unsafe "hs_int64ToWord64" int64ToWord64# :: Int64# -> Word64#
foreign import ccall unsafe "hs_word64ToInt64" word64ToInt64# :: Word64# -> Int64#
foreign import ccall unsafe "hs_intToInt64" intToInt64# :: Int# -> Int64#
foreign import ccall unsafe "hs_wordToWord64" wordToWord64# :: Word# -> Word64#
foreign import ccall unsafe "hs_word64ToWord" word64ToWord# :: Word64# -> Word#
foreign import ccall unsafe "hs_plusInt64" plusInt64# :: Int64# -> Int64# -> Int64#
foreign import ccall unsafe "hs_minusInt64" minusInt64# :: Int64# -> Int64# -> Int64#
foreign import ccall unsafe "hs_timesInt64" timesInt64# :: Int64# -> Int64# -> Int64#
foreign import ccall unsafe "hs_negateInt64" negateInt64# :: Int64# -> Int64#
foreign import ccall unsafe "hs_quotWord64" quotWord64# :: Word64# -> Word64# -> Word64#
foreign import ccall unsafe "hs_remWord64" remWord64# :: Word64# -> Word64# -> Word64#
foreign import ccall unsafe "hs_and64" and64# :: Word64# -> Word64# -> Word64#
foreign import ccall unsafe "hs_or64" or64# :: Word64# -> Word64# -> Word64#
foreign import ccall unsafe "hs_xor64" xor64# :: Word64# -> Word64# -> Word64#
foreign import ccall unsafe "hs_not64" not64# :: Word64# -> Word64#
foreign import ccall unsafe "hs_uncheckedShiftL64" uncheckedShiftL64# :: Word64# -> Int# -> Word64#
foreign import ccall unsafe "hs_uncheckedShiftRL64" uncheckedShiftRL64# :: Word64# -> Int# -> Word64#
foreign import ccall unsafe "hs_integerToWord64" integerToWord64# :: Int# -> ByteArray# -> Word64#
{-# RULES
"fromIntegral/Int->Word64" fromIntegral = \(I# x#) -> W64# (int64ToWord64# (intToInt64# x#))
"fromIntegral/Word->Word64" fromIntegral = \(W# x#) -> W64# (wordToWord64# x#)
"fromIntegral/Word64->Int" fromIntegral = \(W64# x#) -> I# (word2Int# (word64ToWord# x#))
"fromIntegral/Word64->Word" fromIntegral = \(W64# x#) -> W# (word64ToWord# x#)
"fromIntegral/Word64->Word64" fromIntegral = id :: Word64 -> Word64
#-}
#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)
-- ^ 64-bit unsigned integer type
instance Num Word64 where
(W64# x#) + (W64# y#) = W64# (x# `plusWord#` y#)
(W64# x#) - (W64# y#) = W64# (x# `minusWord#` y#)
(W64# x#) * (W64# y#) = W64# (x# `timesWord#` y#)
negate (W64# x#) = W64# (int2Word# (negateInt# (word2Int# x#)))
abs x = x
signum 0 = 0
signum _ = 1
fromInteger (S# i#) = W64# (int2Word# i#)
fromInteger (J# s# d#) = W64# (integer2Word# s# d#)
instance Enum Word64 where
succ x
| x /= maxBound = x + 1
| otherwise = succError "Word64"
pred x
| x /= minBound = x - 1
| otherwise = predError "Word64"
toEnum i@(I# i#)
| i >= 0 = W64# (int2Word# i#)
| otherwise = toEnumError "Word64" i (minBound::Word64, maxBound::Word64)
fromEnum x@(W64# x#)
| x <= fromIntegral (maxBound::Int)
= I# (word2Int# x#)
| otherwise = fromEnumError "Word64" x
enumFrom = integralEnumFrom
enumFromThen = integralEnumFromThen
enumFromTo = integralEnumFromTo
enumFromThenTo = integralEnumFromThenTo
instance Integral Word64 where
quot x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord#` y#)
| otherwise = divZeroError
rem x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord#` y#)
| otherwise = divZeroError
div x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord#` y#)
| otherwise = divZeroError
mod x@(W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem x@(W64# x#) y@(W64# y#)
| y /= 0 = (W64# (x# `quotWord#` y#), W64# (x# `remWord#` y#))
| otherwise = divZeroError
divMod x@(W64# x#) y@(W64# y#)
| y /= 0 = (W64# (x# `quotWord#` y#), W64# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W64# x#)
| i# >=# 0# = S# i#
| otherwise = case word2Integer# x# of (# s, d #) -> J# s d
where
i# = word2Int# x#
instance Bits Word64 where
{-# INLINE shift #-}
(W64# x#) .&. (W64# y#) = W64# (x# `and#` y#)
(W64# x#) .|. (W64# y#) = W64# (x# `or#` y#)
(W64# x#) `xor` (W64# y#) = W64# (x# `xor#` y#)
complement (W64# x#) = W64# (x# `xor#` mb#) where W64# mb# = maxBound
(W64# x#) `shift` (I# i#)
| i# >=# 0# = W64# (x# `shiftL#` i#)
| otherwise = W64# (x# `shiftRL#` negateInt# i#)
(W64# x#) `rotate` (I# i#)
| i'# ==# 0# = W64# x#
| otherwise = W64# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (64# -# i'#)))
where
i'# = word2Int# (int2Word# i# `and#` int2Word# 63#)
bitSize _ = 64
isSigned _ = False
{-# RULES
"fromIntegral/a->Word64" fromIntegral = \x -> case fromIntegral x of W# x# -> W64# x#
"fromIntegral/Word64->a" fromIntegral = \(W64# x#) -> fromIntegral (W# x#)
#-}
#endif
instance Show Word64 where
showsPrec p x = showsPrec p (toInteger x)
instance Real Word64 where
toRational x = toInteger x % 1
instance Bounded Word64 where
minBound = 0
maxBound = 0xFFFFFFFFFFFFFFFF
instance Ix Word64 where
range (m,n) = [m..n]
unsafeIndex b@(m,_) i = fromIntegral (i - m)
inRange (m,n) i = m <= i && i <= n
instance Read Word64 where
readsPrec p s = [(fromInteger x, r) | (x, r) <- readsPrec p s]
|
