base-4.9.1.0: Basic libraries

Copyright(c) The University of Glasgow 2001
LicenseBSD-style (see the file libraries/base/LICENSE)
Maintainerlibraries@haskell.org
Stabilityexperimental
Portabilityportable
Safe HaskellSafe
LanguageHaskell2010

Data.Word

Contents

Description

Unsigned integer types.

Synopsis

Unsigned integral types

data Word :: * Source #

A Word is an unsigned integral type, with the same size as Int.

Instances

Bounded Word # 
Enum Word # 
Eq Word 

Methods

(==) :: Word -> Word -> Bool Source #

(/=) :: Word -> Word -> Bool Source #

Integral Word # 
Data Word # 

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 :: (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 # 
Ord Word 
Read Word # 
Real Word # 
Show Word # 
Ix Word # 
FiniteBits Word # 
Bits Word # 
Storable Word # 
PrintfArg Word # 
Functor (URec Word) # 

Methods

fmap :: (a -> b) -> URec Word a -> URec Word b Source #

(<$) :: a -> URec Word b -> URec Word a Source #

Foldable (URec Word) # 

Methods

fold :: Monoid m => URec Word m -> 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 #

sum :: Num a => URec Word a -> a Source #

product :: Num a => URec Word a -> a Source #

Traversable (URec Word) # 

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 #

Generic1 (URec Word) # 

Associated Types

type Rep1 (URec Word :: * -> *) :: * -> * Source #

Methods

from1 :: URec Word a -> Rep1 (URec Word) a Source #

to1 :: Rep1 (URec Word) a -> URec Word a Source #

Eq (URec Word p) # 

Methods

(==) :: URec Word p -> URec Word p -> Bool Source #

(/=) :: URec Word p -> URec Word p -> Bool Source #

Ord (URec Word p) # 

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 #

max :: URec Word p -> URec Word p -> URec Word p Source #

min :: URec Word p -> URec Word p -> URec Word p Source #

Show (URec Word p) # 
Generic (URec Word p) # 

Associated Types

type Rep (URec Word p) :: * -> * Source #

Methods

from :: URec Word p -> Rep (URec Word p) x Source #

to :: Rep (URec Word p) x -> URec Word p Source #

data URec Word #

Used for marking occurrences of Word#

data URec Word = UWord {}
type Rep1 (URec Word) # 
type Rep1 (URec Word) = D1 (MetaData "URec" "GHC.Generics" "base" False) (C1 (MetaCons "UWord" PrefixI True) (S1 (MetaSel (Just Symbol "uWord#") NoSourceUnpackedness NoSourceStrictness DecidedLazy) UWord))
type Rep (URec Word p) # 
type Rep (URec Word p) = D1 (MetaData "URec" "GHC.Generics" "base" False) (C1 (MetaCons "UWord" PrefixI True) (S1 (MetaSel (Just Symbol "uWord#") NoSourceUnpackedness NoSourceStrictness DecidedLazy) UWord))

data Word8 Source #

8-bit unsigned integer type

Instances

Bounded Word8 # 
Enum Word8 # 
Eq Word8 # 

Methods

(==) :: Word8 -> Word8 -> Bool Source #

(/=) :: Word8 -> Word8 -> Bool Source #

Integral Word8 # 
Data Word8 # 

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word8 -> c Word8 Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word8 Source #

toConstr :: Word8 -> Constr Source #

dataTypeOf :: Word8 -> DataType Source #

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c Word8) Source #

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word8) Source #

gmapT :: (forall b. Data b => b -> b) -> Word8 -> Word8 Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word8 -> r Source #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word8 -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> Word8 -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word8 -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word8 -> m Word8 Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word8 -> m Word8 Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word8 -> m Word8 Source #

Num Word8 # 
Ord Word8 # 
Read Word8 # 
Real Word8 # 
Show Word8 # 
Ix Word8 # 
FiniteBits Word8 # 
Bits Word8 # 
Storable Word8 # 
PrintfArg Word8 # 

data Word16 Source #

16-bit unsigned integer type

Instances

Bounded Word16 # 
Enum Word16 # 
Eq Word16 # 
Integral Word16 # 
Data Word16 # 

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word16 -> c Word16 Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word16 Source #

toConstr :: Word16 -> Constr Source #

dataTypeOf :: Word16 -> DataType Source #

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c Word16) Source #

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word16) Source #

gmapT :: (forall b. Data b => b -> b) -> Word16 -> Word16 Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word16 -> r Source #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word16 -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> Word16 -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word16 -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word16 -> m Word16 Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word16 -> m Word16 Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word16 -> m Word16 Source #

Num Word16 # 
Ord Word16 # 
Read Word16 # 
Real Word16 # 
Show Word16 # 
Ix Word16 # 
FiniteBits Word16 # 
Bits Word16 # 
Storable Word16 # 
PrintfArg Word16 # 

data Word32 Source #

32-bit unsigned integer type

Instances

Bounded Word32 # 
Enum Word32 # 
Eq Word32 # 
Integral Word32 # 
Data Word32 # 

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word32 -> c Word32 Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word32 Source #

toConstr :: Word32 -> Constr Source #

dataTypeOf :: Word32 -> DataType Source #

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c Word32) Source #

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word32) Source #

gmapT :: (forall b. Data b => b -> b) -> Word32 -> Word32 Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word32 -> r Source #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word32 -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> Word32 -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word32 -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word32 -> m Word32 Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word32 -> m Word32 Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word32 -> m Word32 Source #

Num Word32 # 
Ord Word32 # 
Read Word32 # 
Real Word32 # 
Show Word32 # 
Ix Word32 # 
FiniteBits Word32 # 
Bits Word32 # 
Storable Word32 # 
PrintfArg Word32 # 

data Word64 Source #

64-bit unsigned integer type

Instances

Bounded Word64 # 
Enum Word64 # 
Eq Word64 # 
Integral Word64 # 
Data Word64 # 

Methods

gfoldl :: (forall d b. Data d => c (d -> b) -> d -> c b) -> (forall g. g -> c g) -> Word64 -> c Word64 Source #

gunfold :: (forall b r. Data b => c (b -> r) -> c r) -> (forall r. r -> c r) -> Constr -> c Word64 Source #

toConstr :: Word64 -> Constr Source #

dataTypeOf :: Word64 -> DataType Source #

dataCast1 :: Typeable (* -> *) t => (forall d. Data d => c (t d)) -> Maybe (c Word64) Source #

dataCast2 :: Typeable (* -> * -> *) t => (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c Word64) Source #

gmapT :: (forall b. Data b => b -> b) -> Word64 -> Word64 Source #

gmapQl :: (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> Word64 -> r Source #

gmapQr :: (r' -> r -> r) -> r -> (forall d. Data d => d -> r') -> Word64 -> r Source #

gmapQ :: (forall d. Data d => d -> u) -> Word64 -> [u] Source #

gmapQi :: Int -> (forall d. Data d => d -> u) -> Word64 -> u Source #

gmapM :: Monad m => (forall d. Data d => d -> m d) -> Word64 -> m Word64 Source #

gmapMp :: MonadPlus m => (forall d. Data d => d -> m d) -> Word64 -> m Word64 Source #

gmapMo :: MonadPlus m => (forall d. Data d => d -> m d) -> Word64 -> m Word64 Source #

Num Word64 # 
Ord Word64 # 
Read Word64 # 
Real Word64 # 
Show Word64 # 
Ix Word64 # 
FiniteBits Word64 # 
Bits Word64 # 
Storable Word64 # 
PrintfArg Word64 # 

byte swapping

byteSwap16 :: Word16 -> Word16 Source #

Swap bytes in Word16.

Since: 4.7.0.0

byteSwap32 :: Word32 -> Word32 Source #

Reverse order of bytes in Word32.

Since: 4.7.0.0

byteSwap64 :: Word64 -> Word64 Source #

Reverse order of bytes in Word64.

Since: 4.7.0.0

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 negate should 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 Enum instances over a bounded type such as Int (see the section of the Haskell report dealing with arithmetic sequences) also hold for the Enum instances over the various Word types 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 == 1 in some C implementations.