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Word.hs
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Word.hs
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{-# LANGUAGE Trustworthy #-}
{-# LANGUAGE CPP, NoImplicitPrelude, BangPatterns, MagicHash, UnboxedTuples #-}
{-# OPTIONS_HADDOCK hide #-}
-----------------------------------------------------------------------------
-- |
-- 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"
module GHC.Word (
Word(..), Word8(..), Word16(..), Word32(..), Word64(..),
-- * Shifts
uncheckedShiftL64#,
uncheckedShiftRL64#,
-- * Byte swapping
byteSwap16,
byteSwap32,
byteSwap64,
-- * Equality operators
-- | See GHC.Classes#matching_overloaded_methods_in_rules
eqWord, neWord, gtWord, geWord, ltWord, leWord,
eqWord8, neWord8, gtWord8, geWord8, ltWord8, leWord8,
eqWord16, neWord16, gtWord16, geWord16, ltWord16, leWord16,
eqWord32, neWord32, gtWord32, geWord32, ltWord32, leWord32,
eqWord64, neWord64, gtWord64, geWord64, ltWord64, leWord64
) where
import Data.Bits
import Data.Maybe
#if WORD_SIZE_IN_BITS < 64
import GHC.IntWord64
#endif
import GHC.Base
import GHC.Enum
import GHC.Num
import GHC.Real
import GHC.Read
import GHC.Arr
import GHC.Show
------------------------------------------------------------------------
-- 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 {-# CTYPE "HsWord8" #-} Word8 = W8# Word#
-- ^ 8-bit unsigned integer type
-- See GHC.Classes#matching_overloaded_methods_in_rules
instance Eq Word8 where
(==) = eqWord8
(/=) = neWord8
eqWord8, neWord8 :: Word8 -> Word8 -> Bool
eqWord8 (W8# x) (W8# y) = isTrue# (x `eqWord#` y)
neWord8 (W8# x) (W8# y) = isTrue# (x `neWord#` y)
{-# INLINE [1] eqWord8 #-}
{-# INLINE [1] neWord8 #-}
instance Ord Word8 where
(<) = ltWord8
(<=) = leWord8
(>=) = geWord8
(>) = gtWord8
{-# INLINE [1] gtWord8 #-}
{-# INLINE [1] geWord8 #-}
{-# INLINE [1] ltWord8 #-}
{-# INLINE [1] leWord8 #-}
gtWord8, geWord8, ltWord8, leWord8 :: Word8 -> Word8 -> Bool
(W8# x) `gtWord8` (W8# y) = isTrue# (x `gtWord#` y)
(W8# x) `geWord8` (W8# y) = isTrue# (x `geWord#` y)
(W8# x) `ltWord8` (W8# y) = isTrue# (x `ltWord#` y)
(W8# x) `leWord8` (W8# y) = isTrue# (x `leWord#` y)
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 i = W8# (narrow8Word# (integerToWord i))
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 (W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `quotWord#` y#)
| otherwise = divZeroError
rem (W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `remWord#` y#)
| otherwise = divZeroError
div (W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `quotWord#` y#)
| otherwise = divZeroError
mod (W8# x#) y@(W8# y#)
| y /= 0 = W8# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem (W8# x#) y@(W8# y#)
| y /= 0 = case x# `quotRemWord#` y# of
(# q, r #) ->
(W8# q, W8# r)
| otherwise = divZeroError
divMod (W8# x#) y@(W8# y#)
| y /= 0 = (W8# (x# `quotWord#` y#), W8# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W8# x#) = smallInteger (word2Int# x#)
instance Bounded Word8 where
minBound = 0
maxBound = 0xFF
instance Ix Word8 where
range (m,n) = [m..n]
unsafeIndex (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 #-}
{-# INLINE bit #-}
{-# INLINE testBit #-}
(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#)
| isTrue# (i# >=# 0#) = W8# (narrow8Word# (x# `shiftL#` i#))
| otherwise = W8# (x# `shiftRL#` negateInt# i#)
(W8# x#) `shiftL` (I# i#) = W8# (narrow8Word# (x# `shiftL#` i#))
(W8# x#) `unsafeShiftL` (I# i#) =
W8# (narrow8Word# (x# `uncheckedShiftL#` i#))
(W8# x#) `shiftR` (I# i#) = W8# (x# `shiftRL#` i#)
(W8# x#) `unsafeShiftR` (I# i#) = W8# (x# `uncheckedShiftRL#` i#)
(W8# x#) `rotate` (I# i#)
| isTrue# (i'# ==# 0#) = W8# x#
| otherwise = W8# (narrow8Word# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (8# -# i'#))))
where
!i'# = word2Int# (int2Word# i# `and#` 7##)
bitSizeMaybe i = Just (finiteBitSize i)
bitSize i = finiteBitSize i
isSigned _ = False
popCount (W8# x#) = I# (word2Int# (popCnt8# x#))
bit = bitDefault
testBit = testBitDefault
instance FiniteBits Word8 where
finiteBitSize _ = 8
countLeadingZeros (W8# x#) = I# (word2Int# (clz8# x#))
countTrailingZeros (W8# x#) = I# (word2Int# (ctz8# x#))
{-# 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#)
#-}
{-# RULES
"properFraction/Float->(Word8,Float)"
properFraction = \x ->
case properFraction x of {
(n, y) -> ((fromIntegral :: Int -> Word8) n, y :: Float) }
"truncate/Float->Word8"
truncate = (fromIntegral :: Int -> Word8) . (truncate :: Float -> Int)
"floor/Float->Word8"
floor = (fromIntegral :: Int -> Word8) . (floor :: Float -> Int)
"ceiling/Float->Word8"
ceiling = (fromIntegral :: Int -> Word8) . (ceiling :: Float -> Int)
"round/Float->Word8"
round = (fromIntegral :: Int -> Word8) . (round :: Float -> Int)
#-}
{-# RULES
"properFraction/Double->(Word8,Double)"
properFraction = \x ->
case properFraction x of {
(n, y) -> ((fromIntegral :: Int -> Word8) n, y :: Double) }
"truncate/Double->Word8"
truncate = (fromIntegral :: Int -> Word8) . (truncate :: Double -> Int)
"floor/Double->Word8"
floor = (fromIntegral :: Int -> Word8) . (floor :: Double -> Int)
"ceiling/Double->Word8"
ceiling = (fromIntegral :: Int -> Word8) . (ceiling :: Double -> Int)
"round/Double->Word8"
round = (fromIntegral :: Int -> Word8) . (round :: Double -> Int)
#-}
------------------------------------------------------------------------
-- 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 {-# CTYPE "HsWord16" #-} Word16 = W16# Word#
-- ^ 16-bit unsigned integer type
-- See GHC.Classes#matching_overloaded_methods_in_rules
instance Eq Word16 where
(==) = eqWord16
(/=) = neWord16
eqWord16, neWord16 :: Word16 -> Word16 -> Bool
eqWord16 (W16# x) (W16# y) = isTrue# (x `eqWord#` y)
neWord16 (W16# x) (W16# y) = isTrue# (x `neWord#` y)
{-# INLINE [1] eqWord16 #-}
{-# INLINE [1] neWord16 #-}
instance Ord Word16 where
(<) = ltWord16
(<=) = leWord16
(>=) = geWord16
(>) = gtWord16
{-# INLINE [1] gtWord16 #-}
{-# INLINE [1] geWord16 #-}
{-# INLINE [1] ltWord16 #-}
{-# INLINE [1] leWord16 #-}
gtWord16, geWord16, ltWord16, leWord16 :: Word16 -> Word16 -> Bool
(W16# x) `gtWord16` (W16# y) = isTrue# (x `gtWord#` y)
(W16# x) `geWord16` (W16# y) = isTrue# (x `geWord#` y)
(W16# x) `ltWord16` (W16# y) = isTrue# (x `ltWord#` y)
(W16# x) `leWord16` (W16# y) = isTrue# (x `leWord#` y)
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 i = W16# (narrow16Word# (integerToWord i))
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 (W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `quotWord#` y#)
| otherwise = divZeroError
rem (W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `remWord#` y#)
| otherwise = divZeroError
div (W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `quotWord#` y#)
| otherwise = divZeroError
mod (W16# x#) y@(W16# y#)
| y /= 0 = W16# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem (W16# x#) y@(W16# y#)
| y /= 0 = case x# `quotRemWord#` y# of
(# q, r #) ->
(W16# q, W16# r)
| otherwise = divZeroError
divMod (W16# x#) y@(W16# y#)
| y /= 0 = (W16# (x# `quotWord#` y#), W16# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W16# x#) = smallInteger (word2Int# x#)
instance Bounded Word16 where
minBound = 0
maxBound = 0xFFFF
instance Ix Word16 where
range (m,n) = [m..n]
unsafeIndex (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 #-}
{-# INLINE bit #-}
{-# INLINE testBit #-}
(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#)
| isTrue# (i# >=# 0#) = W16# (narrow16Word# (x# `shiftL#` i#))
| otherwise = W16# (x# `shiftRL#` negateInt# i#)
(W16# x#) `shiftL` (I# i#) = W16# (narrow16Word# (x# `shiftL#` i#))
(W16# x#) `unsafeShiftL` (I# i#) =
W16# (narrow16Word# (x# `uncheckedShiftL#` i#))
(W16# x#) `shiftR` (I# i#) = W16# (x# `shiftRL#` i#)
(W16# x#) `unsafeShiftR` (I# i#) = W16# (x# `uncheckedShiftRL#` i#)
(W16# x#) `rotate` (I# i#)
| isTrue# (i'# ==# 0#) = W16# x#
| otherwise = W16# (narrow16Word# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (16# -# i'#))))
where
!i'# = word2Int# (int2Word# i# `and#` 15##)
bitSizeMaybe i = Just (finiteBitSize i)
bitSize i = finiteBitSize i
isSigned _ = False
popCount (W16# x#) = I# (word2Int# (popCnt16# x#))
bit = bitDefault
testBit = testBitDefault
instance FiniteBits Word16 where
finiteBitSize _ = 16
countLeadingZeros (W16# x#) = I# (word2Int# (clz16# x#))
countTrailingZeros (W16# x#) = I# (word2Int# (ctz16# x#))
-- | Swap bytes in 'Word16'.
--
-- @since 4.7.0.0
byteSwap16 :: Word16 -> Word16
byteSwap16 (W16# w#) = W16# (narrow16Word# (byteSwap16# w#))
{-# 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#)
#-}
{-# RULES
"properFraction/Float->(Word16,Float)"
properFraction = \x ->
case properFraction x of {
(n, y) -> ((fromIntegral :: Int -> Word16) n, y :: Float) }
"truncate/Float->Word16"
truncate = (fromIntegral :: Int -> Word16) . (truncate :: Float -> Int)
"floor/Float->Word16"
floor = (fromIntegral :: Int -> Word16) . (floor :: Float -> Int)
"ceiling/Float->Word16"
ceiling = (fromIntegral :: Int -> Word16) . (ceiling :: Float -> Int)
"round/Float->Word16"
round = (fromIntegral :: Int -> Word16) . (round :: Float -> Int)
#-}
{-# RULES
"properFraction/Double->(Word16,Double)"
properFraction = \x ->
case properFraction x of {
(n, y) -> ((fromIntegral :: Int -> Word16) n, y :: Double) }
"truncate/Double->Word16"
truncate = (fromIntegral :: Int -> Word16) . (truncate :: Double -> Int)
"floor/Double->Word16"
floor = (fromIntegral :: Int -> Word16) . (floor :: Double -> Int)
"ceiling/Double->Word16"
ceiling = (fromIntegral :: Int -> Word16) . (ceiling :: Double -> Int)
"round/Double->Word16"
round = (fromIntegral :: Int -> Word16) . (round :: Double -> Int)
#-}
------------------------------------------------------------------------
-- type Word32
------------------------------------------------------------------------
-- 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.
-- We can use rewrite rules for the RealFrac methods
{-# RULES
"properFraction/Float->(Word32,Float)"
properFraction = \x ->
case properFraction x of {
(n, y) -> ((fromIntegral :: Int -> Word32) n, y :: Float) }
"truncate/Float->Word32"
truncate = (fromIntegral :: Int -> Word32) . (truncate :: Float -> Int)
"floor/Float->Word32"
floor = (fromIntegral :: Int -> Word32) . (floor :: Float -> Int)
"ceiling/Float->Word32"
ceiling = (fromIntegral :: Int -> Word32) . (ceiling :: Float -> Int)
"round/Float->Word32"
round = (fromIntegral :: Int -> Word32) . (round :: Float -> Int)
#-}
{-# RULES
"properFraction/Double->(Word32,Double)"
properFraction = \x ->
case properFraction x of {
(n, y) -> ((fromIntegral :: Int -> Word32) n, y :: Double) }
"truncate/Double->Word32"
truncate = (fromIntegral :: Int -> Word32) . (truncate :: Double -> Int)
"floor/Double->Word32"
floor = (fromIntegral :: Int -> Word32) . (floor :: Double -> Int)
"ceiling/Double->Word32"
ceiling = (fromIntegral :: Int -> Word32) . (ceiling :: Double -> Int)
"round/Double->Word32"
round = (fromIntegral :: Int -> Word32) . (round :: Double -> Int)
#-}
#endif
data {-# CTYPE "HsWord32" #-} Word32 = W32# Word#
-- ^ 32-bit unsigned integer type
-- See GHC.Classes#matching_overloaded_methods_in_rules
instance Eq Word32 where
(==) = eqWord32
(/=) = neWord32
eqWord32, neWord32 :: Word32 -> Word32 -> Bool
eqWord32 (W32# x) (W32# y) = isTrue# (x `eqWord#` y)
neWord32 (W32# x) (W32# y) = isTrue# (x `neWord#` y)
{-# INLINE [1] eqWord32 #-}
{-# INLINE [1] neWord32 #-}
instance Ord Word32 where
(<) = ltWord32
(<=) = leWord32
(>=) = geWord32
(>) = gtWord32
{-# INLINE [1] gtWord32 #-}
{-# INLINE [1] geWord32 #-}
{-# INLINE [1] ltWord32 #-}
{-# INLINE [1] leWord32 #-}
gtWord32, geWord32, ltWord32, leWord32 :: Word32 -> Word32 -> Bool
(W32# x) `gtWord32` (W32# y) = isTrue# (x `gtWord#` y)
(W32# x) `geWord32` (W32# y) = isTrue# (x `geWord#` y)
(W32# x) `ltWord32` (W32# y) = isTrue# (x `ltWord#` y)
(W32# x) `leWord32` (W32# y) = isTrue# (x `leWord#` y)
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 i = W32# (narrow32Word# (integerToWord i))
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 (W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `quotWord#` y#)
| otherwise = divZeroError
rem (W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `remWord#` y#)
| otherwise = divZeroError
div (W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `quotWord#` y#)
| otherwise = divZeroError
mod (W32# x#) y@(W32# y#)
| y /= 0 = W32# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem (W32# x#) y@(W32# y#)
| y /= 0 = case x# `quotRemWord#` y# of
(# q, r #) ->
(W32# q, W32# r)
| otherwise = divZeroError
divMod (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
| isTrue# (i# >=# 0#) = smallInteger i#
| otherwise = wordToInteger x#
where
!i# = word2Int# x#
#else
= smallInteger (word2Int# x#)
#endif
instance Bits Word32 where
{-# INLINE shift #-}
{-# INLINE bit #-}
{-# INLINE testBit #-}
(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#)
| isTrue# (i# >=# 0#) = W32# (narrow32Word# (x# `shiftL#` i#))
| otherwise = W32# (x# `shiftRL#` negateInt# i#)
(W32# x#) `shiftL` (I# i#) = W32# (narrow32Word# (x# `shiftL#` i#))
(W32# x#) `unsafeShiftL` (I# i#) =
W32# (narrow32Word# (x# `uncheckedShiftL#` i#))
(W32# x#) `shiftR` (I# i#) = W32# (x# `shiftRL#` i#)
(W32# x#) `unsafeShiftR` (I# i#) = W32# (x# `uncheckedShiftRL#` i#)
(W32# x#) `rotate` (I# i#)
| isTrue# (i'# ==# 0#) = W32# x#
| otherwise = W32# (narrow32Word# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (32# -# i'#))))
where
!i'# = word2Int# (int2Word# i# `and#` 31##)
bitSizeMaybe i = Just (finiteBitSize i)
bitSize i = finiteBitSize i
isSigned _ = False
popCount (W32# x#) = I# (word2Int# (popCnt32# x#))
bit = bitDefault
testBit = testBitDefault
instance FiniteBits Word32 where
finiteBitSize _ = 32
countLeadingZeros (W32# x#) = I# (word2Int# (clz32# x#))
countTrailingZeros (W32# x#) = I# (word2Int# (ctz32# x#))
{-# 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#)
#-}
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 (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
-- | Reverse order of bytes in 'Word32'.
--
-- @since 4.7.0.0
byteSwap32 :: Word32 -> Word32
byteSwap32 (W32# w#) = W32# (narrow32Word# (byteSwap32# w#))
------------------------------------------------------------------------
-- type Word64
------------------------------------------------------------------------
#if WORD_SIZE_IN_BITS < 64
data {-# CTYPE "HsWord64" #-} Word64 = W64# Word64#
-- ^ 64-bit unsigned integer type
-- See GHC.Classes#matching_overloaded_methods_in_rules
instance Eq Word64 where
(==) = eqWord64
(/=) = neWord64
eqWord64, neWord64 :: Word64 -> Word64 -> Bool
eqWord64 (W64# x) (W64# y) = isTrue# (x `eqWord64#` y)
neWord64 (W64# x) (W64# y) = isTrue# (x `neWord64#` y)
{-# INLINE [1] eqWord64 #-}
{-# INLINE [1] neWord64 #-}
instance Ord Word64 where
(<) = ltWord64
(<=) = leWord64
(>=) = geWord64
(>) = gtWord64
{-# INLINE [1] gtWord64 #-}
{-# INLINE [1] geWord64 #-}
{-# INLINE [1] ltWord64 #-}
{-# INLINE [1] leWord64 #-}
gtWord64, geWord64, ltWord64, leWord64 :: Word64 -> Word64 -> Bool
(W64# x) `gtWord64` (W64# y) = isTrue# (x `gtWord64#` y)
(W64# x) `geWord64` (W64# y) = isTrue# (x `geWord64#` y)
(W64# x) `ltWord64` (W64# y) = isTrue# (x `ltWord64#` y)
(W64# x) `leWord64` (W64# y) = isTrue# (x `leWord64#` 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 i = W64# (integerToWord64 i)
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 (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord64#` y#)
| otherwise = divZeroError
rem (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord64#` y#)
| otherwise = divZeroError
div (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord64#` y#)
| otherwise = divZeroError
mod (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord64#` y#)
| otherwise = divZeroError
quotRem (W64# x#) y@(W64# y#)
| y /= 0 = (W64# (x# `quotWord64#` y#), W64# (x# `remWord64#` y#))
| otherwise = divZeroError
divMod (W64# x#) y@(W64# y#)
| y /= 0 = (W64# (x# `quotWord64#` y#), W64# (x# `remWord64#` y#))
| otherwise = divZeroError
toInteger (W64# x#) = word64ToInteger x#
instance Bits Word64 where
{-# INLINE shift #-}
{-# INLINE bit #-}
{-# INLINE testBit #-}
(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#)
| isTrue# (i# >=# 0#) = W64# (x# `shiftL64#` i#)
| otherwise = W64# (x# `shiftRL64#` negateInt# i#)
(W64# x#) `shiftL` (I# i#) = W64# (x# `shiftL64#` i#)
(W64# x#) `unsafeShiftL` (I# i#) = W64# (x# `uncheckedShiftL64#` i#)
(W64# x#) `shiftR` (I# i#) = W64# (x# `shiftRL64#` i#)
(W64# x#) `unsafeShiftR` (I# i#) = W64# (x# `uncheckedShiftRL64#` i#)
(W64# x#) `rotate` (I# i#)
| isTrue# (i'# ==# 0#) = W64# x#
| otherwise = W64# ((x# `uncheckedShiftL64#` i'#) `or64#`
(x# `uncheckedShiftRL64#` (64# -# i'#)))
where
!i'# = word2Int# (int2Word# i# `and#` 63##)
bitSizeMaybe i = Just (finiteBitSize i)
bitSize i = finiteBitSize i
isSigned _ = False
popCount (W64# x#) = I# (word2Int# (popCnt64# x#))
bit = bitDefault
testBit = testBitDefault
-- 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 | isTrue# (b >=# 64#) = wordToWord64# 0##
| otherwise = a `uncheckedShiftL64#` b
a `shiftRL64#` b | isTrue# (b >=# 64#) = wordToWord64# 0##
| otherwise = a `uncheckedShiftRL64#` b
{-# 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 {-# CTYPE "HsWord64" #-} Word64 = W64# Word#
-- ^ 64-bit unsigned integer type
-- See GHC.Classes#matching_overloaded_methods_in_rules
instance Eq Word64 where
(==) = eqWord64
(/=) = neWord64
eqWord64, neWord64 :: Word64 -> Word64 -> Bool
eqWord64 (W64# x) (W64# y) = isTrue# (x `eqWord#` y)
neWord64 (W64# x) (W64# y) = isTrue# (x `neWord#` y)
{-# INLINE [1] eqWord64 #-}
{-# INLINE [1] neWord64 #-}
instance Ord Word64 where
(<) = ltWord64
(<=) = leWord64
(>=) = geWord64
(>) = gtWord64
{-# INLINE [1] gtWord64 #-}
{-# INLINE [1] geWord64 #-}
{-# INLINE [1] ltWord64 #-}
{-# INLINE [1] leWord64 #-}
gtWord64, geWord64, ltWord64, leWord64 :: Word64 -> Word64 -> Bool
(W64# x) `gtWord64` (W64# y) = isTrue# (x `gtWord#` y)
(W64# x) `geWord64` (W64# y) = isTrue# (x `geWord#` y)
(W64# x) `ltWord64` (W64# y) = isTrue# (x `ltWord#` y)
(W64# x) `leWord64` (W64# y) = isTrue# (x `leWord#` y)
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 i = W64# (integerToWord i)
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 (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord#` y#)
| otherwise = divZeroError
rem (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord#` y#)
| otherwise = divZeroError
div (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `quotWord#` y#)
| otherwise = divZeroError
mod (W64# x#) y@(W64# y#)
| y /= 0 = W64# (x# `remWord#` y#)
| otherwise = divZeroError
quotRem (W64# x#) y@(W64# y#)
| y /= 0 = case x# `quotRemWord#` y# of
(# q, r #) ->
(W64# q, W64# r)
| otherwise = divZeroError
divMod (W64# x#) y@(W64# y#)
| y /= 0 = (W64# (x# `quotWord#` y#), W64# (x# `remWord#` y#))
| otherwise = divZeroError
toInteger (W64# x#)
| isTrue# (i# >=# 0#) = smallInteger i#
| otherwise = wordToInteger x#
where
!i# = word2Int# x#
instance Bits Word64 where
{-# INLINE shift #-}
{-# INLINE bit #-}
{-# INLINE testBit #-}
(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#)
| isTrue# (i# >=# 0#) = W64# (x# `shiftL#` i#)
| otherwise = W64# (x# `shiftRL#` negateInt# i#)
(W64# x#) `shiftL` (I# i#) = W64# (x# `shiftL#` i#)
(W64# x#) `unsafeShiftL` (I# i#) = W64# (x# `uncheckedShiftL#` i#)
(W64# x#) `shiftR` (I# i#) = W64# (x# `shiftRL#` i#)
(W64# x#) `unsafeShiftR` (I# i#) = W64# (x# `uncheckedShiftRL#` i#)
(W64# x#) `rotate` (I# i#)
| isTrue# (i'# ==# 0#) = W64# x#
| otherwise = W64# ((x# `uncheckedShiftL#` i'#) `or#`
(x# `uncheckedShiftRL#` (64# -# i'#)))
where
!i'# = word2Int# (int2Word# i# `and#` 63##)
bitSizeMaybe i = Just (finiteBitSize i)
bitSize i = finiteBitSize i
isSigned _ = False
popCount (W64# x#) = I# (word2Int# (popCnt64# x#))
bit = bitDefault
testBit = testBitDefault
{-# RULES
"fromIntegral/a->Word64" fromIntegral = \x -> case fromIntegral x of W# x# -> W64# x#
"fromIntegral/Word64->a" fromIntegral = \(W64# x#) -> fromIntegral (W# x#)
#-}
uncheckedShiftL64# :: Word# -> Int# -> Word#
uncheckedShiftL64# = uncheckedShiftL#
uncheckedShiftRL64# :: Word# -> Int# -> Word#
uncheckedShiftRL64# = uncheckedShiftRL#
#endif
instance FiniteBits Word64 where
finiteBitSize _ = 64
countLeadingZeros (W64# x#) = I# (word2Int# (clz64# x#))
countTrailingZeros (W64# x#) = I# (word2Int# (ctz64# x#))
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 (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]
-- | Reverse order of bytes in 'Word64'.
--
-- @since 4.7.0.0
#if WORD_SIZE_IN_BITS < 64
byteSwap64 :: Word64 -> Word64
byteSwap64 (W64# w#) = W64# (byteSwap64# w#)
#else
byteSwap64 :: Word64 -> Word64
byteSwap64 (W64# w#) = W64# (byteSwap# w#)
#endif