| Copyright | (c) The University of Glasgow 2001 |
|---|---|
| License | BSD-style (see the file libraries/base/LICENSE) |
| Maintainer | libraries@haskell.org |
| Stability | experimental |
| Portability | portable |
| Safe Haskell | Safe |
| Language | Haskell2010 |
Data.Word
Description
Unsigned integer types.
Synopsis
- data Word
- data Word8
- data Word16
- data Word32
- data Word64
- byteSwap16 :: Word16 -> Word16
- byteSwap32 :: Word32 -> Word32
- byteSwap64 :: Word64 -> Word64
Unsigned integral types
Instances
| Bounded Word | Since: base-2.1 |
| Enum Word | Since: base-2.1 |
| Eq Word | |
| Integral Word | Since: base-2.1 |
Defined in GHC.Real | |
| Data Word | Since: base-4.0.0.0 |
Defined in Data.Data Methods gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word -> c Word Source # gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word Source # toConstr :: Word -> Constr Source # dataTypeOf :: Word -> DataType Source # dataCast1 :: Typeable t => (forall d. Data d => c (t d)) -> Maybe (c Word) Source # dataCast2 :: Typeable t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word) Source # gmapT :: (forall b. Data b => b -> b) -> Word -> Word Source # gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word -> r Source # gmapQr :: forall r r'. (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word -> r Source # gmapQ :: (forall d. Data d => d -> u) -> Word -> [u] Source # gmapQi :: Int -> (forall d. Data d => d -> u) -> Word -> u Source # gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word -> m Word Source # gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word -> m Word Source # gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word -> m Word Source # | |
| Num Word | Since: base-2.1 |
| Ord Word | |
| Read Word | Since: base-4.5.0.0 |
| Real Word | Since: base-2.1 |
| Show Word | Since: base-2.1 |
| Ix Word | Since: base-4.6.0.0 |
| Bits Word | Since: base-2.1 |
Defined in Data.Bits Methods (.&.) :: Word -> Word -> Word Source # (.|.) :: Word -> Word -> Word Source # xor :: Word -> Word -> Word Source # complement :: Word -> Word Source # shift :: Word -> Int -> Word Source # rotate :: Word -> Int -> Word Source # setBit :: Word -> Int -> Word Source # clearBit :: Word -> Int -> Word Source # complementBit :: Word -> Int -> Word Source # testBit :: Word -> Int -> Bool Source # bitSizeMaybe :: Word -> Maybe Int Source # bitSize :: Word -> Int Source # isSigned :: Word -> Bool Source # shiftL :: Word -> Int -> Word Source # unsafeShiftL :: Word -> Int -> Word Source # shiftR :: Word -> Int -> Word Source # unsafeShiftR :: Word -> Int -> Word Source # rotateL :: Word -> Int -> Word Source # | |
| FiniteBits Word | Since: base-4.6.0.0 |
| Storable Word | Since: base-2.1 |
Defined in Foreign.Storable Methods sizeOf :: Word -> Int Source # alignment :: Word -> Int Source # peekElemOff :: Ptr Word -> Int -> IO Word Source # pokeElemOff :: Ptr Word -> Int -> Word -> IO () Source # peekByteOff :: Ptr b -> Int -> IO Word Source # pokeByteOff :: Ptr b -> Int -> Word -> IO () Source # | |
| PrintfArg Word | Since: base-2.1 |
Defined in Text.Printf | |
| Generic1 (URec Word :: k -> Type) | |
| Functor (URec Word :: Type -> Type) | Since: base-4.9.0.0 |
| Foldable (URec Word :: Type -> Type) | Since: base-4.9.0.0 |
Defined in Data.Foldable Methods fold :: Monoid m => URec Word m -> m Source # foldMap :: Monoid m => (a -> m) -> URec Word a -> m Source # foldMap' :: Monoid m => (a -> m) -> URec Word a -> m Source # foldr :: (a -> b -> b) -> b -> URec Word a -> b Source # foldr' :: (a -> b -> b) -> b -> URec Word a -> b Source # foldl :: (b -> a -> b) -> b -> URec Word a -> b Source # foldl' :: (b -> a -> b) -> b -> URec Word a -> b Source # foldr1 :: (a -> a -> a) -> URec Word a -> a Source # foldl1 :: (a -> a -> a) -> URec Word a -> a Source # toList :: URec Word a -> [a] Source # null :: URec Word a -> Bool Source # length :: URec Word a -> Int Source # elem :: Eq a => a -> URec Word a -> Bool Source # maximum :: Ord a => URec Word a -> a Source # minimum :: Ord a => URec Word a -> a Source # | |
| Traversable (URec Word :: Type -> Type) | Since: base-4.9.0.0 |
Defined in Data.Traversable Methods traverse :: Applicative f => (a -> f b) -> URec Word a -> f (URec Word b) Source # sequenceA :: Applicative f => URec Word (f a) -> f (URec Word a) Source # mapM :: Monad m => (a -> m b) -> URec Word a -> m (URec Word b) Source # sequence :: Monad m => URec Word (m a) -> m (URec Word a) Source # | |
| Eq (URec Word p) | Since: base-4.9.0.0 |
| Ord (URec Word p) | Since: base-4.9.0.0 |
Defined in GHC.Generics Methods compare :: URec Word p -> URec Word p -> Ordering Source # (<) :: URec Word p -> URec Word p -> Bool Source # (<=) :: URec Word p -> URec Word p -> Bool Source # (>) :: URec Word p -> URec Word p -> Bool Source # (>=) :: URec Word p -> URec Word p -> Bool Source # | |
| Show (URec Word p) | Since: base-4.9.0.0 |
| Generic (URec Word p) | |
| data URec Word (p :: k) | Used for marking occurrences of 'Word#' Since: base-4.9.0.0 |
| type Rep1 (URec Word :: k -> Type) | Since: base-4.9.0.0 |
Defined in GHC.Generics | |
| type Rep (URec Word p) | Since: base-4.9.0.0 |
Defined in GHC.Generics | |
8-bit unsigned integer type
Instances
16-bit unsigned integer type
Instances
32-bit unsigned integer type
Instances
64-bit unsigned integer type
Instances
byte swapping
Notes
- All arithmetic is performed modulo 2^n, where n is the number of
bits in the type. One non-obvious consequence of this is that
negateshould not raise an error on negative arguments. - For coercing between any two integer types, use
fromIntegral, which is specialized for all the common cases so should be fast enough. Coercing word types to and from integer types preserves representation, not sign. - An unbounded size unsigned integer type is available with
Natural. - The rules that hold for
Enuminstances over a bounded type such asInt(see the section of the Haskell report dealing with arithmetic sequences) also hold for theEnuminstances over the variousWordtypes defined here. - Right and left shifts by amounts greater than or equal to the width
of the type result in a zero result. This is contrary to the
behaviour in C, which is undefined; a common interpretation is to
truncate the shift count to the width of the type, for example
1 << 32 == 1in some C implementations.