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Foreign.C.Types

Copyright	(c) The FFI task force 2001
License	BSD-style (see the file libraries/base/LICENSE)
Maintainer	ffi@haskell.org
Stability	provisional
Portability	portable
Safe Haskell	Trustworthy
Language	Haskell2010

Representations of C types

Description

Mapping of C types to corresponding Haskell types.

Representations of C types

These types are needed to accurately represent C function prototypes, in order to access C library interfaces in Haskell. The Haskell system is not required to represent those types exactly as C does, but the following guarantees are provided concerning a Haskell type CT representing a C type t:

If a C function prototype has t as an argument or result type, the use of CT in the corresponding position in a foreign declaration permits the Haskell program to access the full range of values encoded by the C type; and conversely, any Haskell value for CT has a valid representation in C.
sizeOf (undefined :: CT) will yield the same value as sizeof (t) in C.
alignment (undefined :: CT) matches the alignment constraint enforced by the C implementation for t.
The members peek and poke of the Storable class map all values of CT to the corresponding value of t and vice versa.
When an instance of Bounded is defined for CT, the values of minBound and maxBound coincide with t_MIN and t_MAX in C.
When an instance of Eq or Ord is defined for CT, the predicates defined by the type class implement the same relation as the corresponding predicate in C on t.
When an instance of Num, Read, Integral, Fractional, Floating, RealFrac, or RealFloat is defined for CT, the arithmetic operations defined by the type class implement the same function as the corresponding arithmetic operations (if available) in C on t.
When an instance of Bits is defined for CT, the bitwise operation defined by the type class implement the same function as the corresponding bitwise operation in C on t.

Bounded CUIntMax
Methods minBound :: CUIntMax Source maxBound :: CUIntMax Source
Enum CUIntMax
Methods succ :: CUIntMax -> CUIntMax Source pred :: CUIntMax -> CUIntMax Source toEnum :: Int -> CUIntMax Source fromEnum :: CUIntMax -> Int Source enumFrom :: CUIntMax -> [CUIntMax] Source enumFromThen :: CUIntMax -> CUIntMax -> [CUIntMax] Source enumFromTo :: CUIntMax -> CUIntMax -> [CUIntMax] Source enumFromThenTo :: CUIntMax -> CUIntMax -> CUIntMax -> [CUIntMax] Source
Eq CUIntMax
Methods (==) :: CUIntMax -> CUIntMax -> Bool Source (/=) :: CUIntMax -> CUIntMax -> Bool Source
Integral CUIntMax
Methods quot :: CUIntMax -> CUIntMax -> CUIntMax Source rem :: CUIntMax -> CUIntMax -> CUIntMax Source div :: CUIntMax -> CUIntMax -> CUIntMax Source mod :: CUIntMax -> CUIntMax -> CUIntMax Source quotRem :: CUIntMax -> CUIntMax -> (CUIntMax, CUIntMax) Source divMod :: CUIntMax -> CUIntMax -> (CUIntMax, CUIntMax) Source toInteger :: CUIntMax -> Integer Source
Num CUIntMax
Methods (+) :: CUIntMax -> CUIntMax -> CUIntMax Source (-) :: CUIntMax -> CUIntMax -> CUIntMax Source (*) :: CUIntMax -> CUIntMax -> CUIntMax Source negate :: CUIntMax -> CUIntMax Source abs :: CUIntMax -> CUIntMax Source signum :: CUIntMax -> CUIntMax Source fromInteger :: Integer -> CUIntMax Source
Ord CUIntMax
Methods compare :: CUIntMax -> CUIntMax -> Ordering Source (<) :: CUIntMax -> CUIntMax -> Bool Source (<=) :: CUIntMax -> CUIntMax -> Bool Source (>) :: CUIntMax -> CUIntMax -> Bool Source (>=) :: CUIntMax -> CUIntMax -> Bool Source max :: CUIntMax -> CUIntMax -> CUIntMax Source min :: CUIntMax -> CUIntMax -> CUIntMax Source
Read CUIntMax
Methods readsPrec :: Int -> ReadS CUIntMax Source readList :: ReadS [CUIntMax] Source readPrec :: ReadPrec CUIntMax Source readListPrec :: ReadPrec [CUIntMax] Source
Real CUIntMax
Methods toRational :: CUIntMax -> Rational Source
Show CUIntMax
Methods showsPrec :: Int -> CUIntMax -> ShowS Source show :: CUIntMax -> String Source showList :: [CUIntMax] -> ShowS Source
FiniteBits CUIntMax
Methods finiteBitSize :: CUIntMax -> Int Source countLeadingZeros :: CUIntMax -> Int Source countTrailingZeros :: CUIntMax -> Int Source
Bits CUIntMax
Methods (.&.) :: CUIntMax -> CUIntMax -> CUIntMax Source (.\|.) :: CUIntMax -> CUIntMax -> CUIntMax Source xor :: CUIntMax -> CUIntMax -> CUIntMax Source complement :: CUIntMax -> CUIntMax Source shift :: CUIntMax -> Int -> CUIntMax Source rotate :: CUIntMax -> Int -> CUIntMax Source zeroBits :: CUIntMax Source bit :: Int -> CUIntMax Source setBit :: CUIntMax -> Int -> CUIntMax Source clearBit :: CUIntMax -> Int -> CUIntMax Source complementBit :: CUIntMax -> Int -> CUIntMax Source testBit :: CUIntMax -> Int -> Bool Source bitSizeMaybe :: CUIntMax -> Maybe Int Source bitSize :: CUIntMax -> Int Source isSigned :: CUIntMax -> Bool Source shiftL :: CUIntMax -> Int -> CUIntMax Source unsafeShiftL :: CUIntMax -> Int -> CUIntMax Source shiftR :: CUIntMax -> Int -> CUIntMax Source unsafeShiftR :: CUIntMax -> Int -> CUIntMax Source rotateL :: CUIntMax -> Int -> CUIntMax Source rotateR :: CUIntMax -> Int -> CUIntMax Source popCount :: CUIntMax -> Int Source
Storable CUIntMax
Methods sizeOf :: CUIntMax -> Int Source alignment :: CUIntMax -> Int Source peekElemOff :: Ptr CUIntMax -> Int -> IO CUIntMax Source pokeElemOff :: Ptr CUIntMax -> Int -> CUIntMax -> IO () Source peekByteOff :: Ptr b -> Int -> IO CUIntMax Source pokeByteOff :: Ptr b -> Int -> CUIntMax -> IO () Source peek :: Ptr CUIntMax -> IO CUIntMax Source poke :: Ptr CUIntMax -> CUIntMax -> IO () Source

Numeric types

These types are represented as newtypes of basic foreign types, and are instances of Eq, Ord, Num, Read, Show, Enum, Typeable and Storable.

newtype CClock Source

Haskell type representing the C clock_t type.

Constructors

CClock Int64

Instances

Enum CClock
Methods succ :: CClock -> CClock Source pred :: CClock -> CClock Source toEnum :: Int -> CClock Source fromEnum :: CClock -> Int Source enumFrom :: CClock -> [CClock] Source enumFromThen :: CClock -> CClock -> [CClock] Source enumFromTo :: CClock -> CClock -> [CClock] Source enumFromThenTo :: CClock -> CClock -> CClock -> [CClock] Source
Eq CClock
Methods (==) :: CClock -> CClock -> Bool Source (/=) :: CClock -> CClock -> Bool Source
Num CClock
Methods (+) :: CClock -> CClock -> CClock Source (-) :: CClock -> CClock -> CClock Source (*) :: CClock -> CClock -> CClock Source negate :: CClock -> CClock Source abs :: CClock -> CClock Source signum :: CClock -> CClock Source fromInteger :: Integer -> CClock Source
Ord CClock
Methods compare :: CClock -> CClock -> Ordering Source (<) :: CClock -> CClock -> Bool Source (<=) :: CClock -> CClock -> Bool Source (>) :: CClock -> CClock -> Bool Source (>=) :: CClock -> CClock -> Bool Source max :: CClock -> CClock -> CClock Source min :: CClock -> CClock -> CClock Source
Read CClock
Methods readsPrec :: Int -> ReadS CClock Source readList :: ReadS [CClock] Source readPrec :: ReadPrec CClock Source readListPrec :: ReadPrec [CClock] Source
Real CClock
Methods toRational :: CClock -> Rational Source
Show CClock
Methods showsPrec :: Int -> CClock -> ShowS Source show :: CClock -> String Source showList :: [CClock] -> ShowS Source
Storable CClock
Methods sizeOf :: CClock -> Int Source alignment :: CClock -> Int Source peekElemOff :: Ptr CClock -> Int -> IO CClock Source pokeElemOff :: Ptr CClock -> Int -> CClock -> IO () Source peekByteOff :: Ptr b -> Int -> IO CClock Source pokeByteOff :: Ptr b -> Int -> CClock -> IO () Source peek :: Ptr CClock -> IO CClock Source poke :: Ptr CClock -> CClock -> IO () Source

newtype CTime Source

Haskell type representing the C time_t type.

Constructors

CTime Int64

Instances

Enum CTime
Methods succ :: CTime -> CTime Source pred :: CTime -> CTime Source toEnum :: Int -> CTime Source fromEnum :: CTime -> Int Source enumFrom :: CTime -> [CTime] Source enumFromThen :: CTime -> CTime -> [CTime] Source enumFromTo :: CTime -> CTime -> [CTime] Source enumFromThenTo :: CTime -> CTime -> CTime -> [CTime] Source
Eq CTime
Methods (==) :: CTime -> CTime -> Bool Source (/=) :: CTime -> CTime -> Bool Source
Num CTime
Methods (+) :: CTime -> CTime -> CTime Source (-) :: CTime -> CTime -> CTime Source (*) :: CTime -> CTime -> CTime Source negate :: CTime -> CTime Source abs :: CTime -> CTime Source signum :: CTime -> CTime Source fromInteger :: Integer -> CTime Source
Ord CTime
Methods compare :: CTime -> CTime -> Ordering Source (<) :: CTime -> CTime -> Bool Source (<=) :: CTime -> CTime -> Bool Source (>) :: CTime -> CTime -> Bool Source (>=) :: CTime -> CTime -> Bool Source max :: CTime -> CTime -> CTime Source min :: CTime -> CTime -> CTime Source
Read CTime
Methods readsPrec :: Int -> ReadS CTime Source readList :: ReadS [CTime] Source readPrec :: ReadPrec CTime Source readListPrec :: ReadPrec [CTime] Source
Real CTime
Methods toRational :: CTime -> Rational Source
Show CTime
Methods showsPrec :: Int -> CTime -> ShowS Source show :: CTime -> String Source showList :: [CTime] -> ShowS Source
Storable CTime
Methods sizeOf :: CTime -> Int Source alignment :: CTime -> Int Source peekElemOff :: Ptr CTime -> Int -> IO CTime Source pokeElemOff :: Ptr CTime -> Int -> CTime -> IO () Source peekByteOff :: Ptr b -> Int -> IO CTime Source pokeByteOff :: Ptr b -> Int -> CTime -> IO () Source peek :: Ptr CTime -> IO CTime Source poke :: Ptr CTime -> CTime -> IO () Source

newtype CUSeconds Source

Haskell type representing the C useconds_t type.

Since: 4.4.0.0

Constructors

CUSeconds Word32

Instances

Enum CUSeconds
Methods succ :: CUSeconds -> CUSeconds Source pred :: CUSeconds -> CUSeconds Source toEnum :: Int -> CUSeconds Source fromEnum :: CUSeconds -> Int Source enumFrom :: CUSeconds -> [CUSeconds] Source enumFromThen :: CUSeconds -> CUSeconds -> [CUSeconds] Source enumFromTo :: CUSeconds -> CUSeconds -> [CUSeconds] Source enumFromThenTo :: CUSeconds -> CUSeconds -> CUSeconds -> [CUSeconds] Source
Eq CUSeconds
Methods (==) :: CUSeconds -> CUSeconds -> Bool Source (/=) :: CUSeconds -> CUSeconds -> Bool Source
Num CUSeconds
Methods (+) :: CUSeconds -> CUSeconds -> CUSeconds Source (-) :: CUSeconds -> CUSeconds -> CUSeconds Source (*) :: CUSeconds -> CUSeconds -> CUSeconds Source negate :: CUSeconds -> CUSeconds Source abs :: CUSeconds -> CUSeconds Source signum :: CUSeconds -> CUSeconds Source fromInteger :: Integer -> CUSeconds Source
Ord CUSeconds
Methods compare :: CUSeconds -> CUSeconds -> Ordering Source (<) :: CUSeconds -> CUSeconds -> Bool Source (<=) :: CUSeconds -> CUSeconds -> Bool Source (>) :: CUSeconds -> CUSeconds -> Bool Source (>=) :: CUSeconds -> CUSeconds -> Bool Source max :: CUSeconds -> CUSeconds -> CUSeconds Source min :: CUSeconds -> CUSeconds -> CUSeconds Source
Read CUSeconds
Methods readsPrec :: Int -> ReadS CUSeconds Source readList :: ReadS [CUSeconds] Source readPrec :: ReadPrec CUSeconds Source readListPrec :: ReadPrec [CUSeconds] Source
Real CUSeconds
Methods toRational :: CUSeconds -> Rational Source
Show CUSeconds
Methods showsPrec :: Int -> CUSeconds -> ShowS Source show :: CUSeconds -> String Source showList :: [CUSeconds] -> ShowS Source
Storable CUSeconds
Methods sizeOf :: CUSeconds -> Int Source alignment :: CUSeconds -> Int Source peekElemOff :: Ptr CUSeconds -> Int -> IO CUSeconds Source pokeElemOff :: Ptr CUSeconds -> Int -> CUSeconds -> IO () Source peekByteOff :: Ptr b -> Int -> IO CUSeconds Source pokeByteOff :: Ptr b -> Int -> CUSeconds -> IO () Source peek :: Ptr CUSeconds -> IO CUSeconds Source poke :: Ptr CUSeconds -> CUSeconds -> IO () Source

newtype CSUSeconds Source

Haskell type representing the C suseconds_t type.

Since: 4.4.0.0

Constructors

CSUSeconds Int64

Instances

Enum CSUSeconds
Methods succ :: CSUSeconds -> CSUSeconds Source pred :: CSUSeconds -> CSUSeconds Source toEnum :: Int -> CSUSeconds Source fromEnum :: CSUSeconds -> Int Source enumFrom :: CSUSeconds -> [CSUSeconds] Source enumFromThen :: CSUSeconds -> CSUSeconds -> [CSUSeconds] Source enumFromTo :: CSUSeconds -> CSUSeconds -> [CSUSeconds] Source enumFromThenTo :: CSUSeconds -> CSUSeconds -> CSUSeconds -> [CSUSeconds] Source
Eq CSUSeconds
Methods (==) :: CSUSeconds -> CSUSeconds -> Bool Source (/=) :: CSUSeconds -> CSUSeconds -> Bool Source
Num CSUSeconds
Methods (+) :: CSUSeconds -> CSUSeconds -> CSUSeconds Source (-) :: CSUSeconds -> CSUSeconds -> CSUSeconds Source (*) :: CSUSeconds -> CSUSeconds -> CSUSeconds Source negate :: CSUSeconds -> CSUSeconds Source abs :: CSUSeconds -> CSUSeconds Source signum :: CSUSeconds -> CSUSeconds Source fromInteger :: Integer -> CSUSeconds Source
Ord CSUSeconds
Methods compare :: CSUSeconds -> CSUSeconds -> Ordering Source (<) :: CSUSeconds -> CSUSeconds -> Bool Source (<=) :: CSUSeconds -> CSUSeconds -> Bool Source (>) :: CSUSeconds -> CSUSeconds -> Bool Source (>=) :: CSUSeconds -> CSUSeconds -> Bool Source max :: CSUSeconds -> CSUSeconds -> CSUSeconds Source min :: CSUSeconds -> CSUSeconds -> CSUSeconds Source
Read CSUSeconds
Methods readsPrec :: Int -> ReadS CSUSeconds Source readList :: ReadS [CSUSeconds] Source readPrec :: ReadPrec CSUSeconds Source readListPrec :: ReadPrec [CSUSeconds] Source
Real CSUSeconds
Methods toRational :: CSUSeconds -> Rational Source
Show CSUSeconds
Methods showsPrec :: Int -> CSUSeconds -> ShowS Source show :: CSUSeconds -> String Source showList :: [CSUSeconds] -> ShowS Source
Storable CSUSeconds
Methods sizeOf :: CSUSeconds -> Int Source alignment :: CSUSeconds -> Int Source peekElemOff :: Ptr CSUSeconds -> Int -> IO CSUSeconds Source pokeElemOff :: Ptr CSUSeconds -> Int -> CSUSeconds -> IO () Source peekByteOff :: Ptr b -> Int -> IO CSUSeconds Source pokeByteOff :: Ptr b -> Int -> CSUSeconds -> IO () Source peek :: Ptr CSUSeconds -> IO CSUSeconds Source poke :: Ptr CSUSeconds -> CSUSeconds -> IO () Source

To convert CTime to UTCTime, use the following:

\t -> posixSecondsToUTCTime (realToFrac t :: POSIXTime)

Floating types

These types are represented as newtypes of Float and Double, and are instances of Eq, Ord, Num, Read, Show, Enum, Typeable, Storable, Real, Fractional, Floating, RealFrac and RealFloat.

newtype CFloat Source

Haskell type representing the C float type.

Constructors

CFloat Float

Instances

Enum CFloat
Methods succ :: CFloat -> CFloat Source pred :: CFloat -> CFloat Source toEnum :: Int -> CFloat Source fromEnum :: CFloat -> Int Source enumFrom :: CFloat -> [CFloat] Source enumFromThen :: CFloat -> CFloat -> [CFloat] Source enumFromTo :: CFloat -> CFloat -> [CFloat] Source enumFromThenTo :: CFloat -> CFloat -> CFloat -> [CFloat] Source
Eq CFloat
Methods (==) :: CFloat -> CFloat -> Bool Source (/=) :: CFloat -> CFloat -> Bool Source
Floating CFloat
Methods pi :: CFloat Source exp :: CFloat -> CFloat Source log :: CFloat -> CFloat Source sqrt :: CFloat -> CFloat Source (**) :: CFloat -> CFloat -> CFloat Source logBase :: CFloat -> CFloat -> CFloat Source sin :: CFloat -> CFloat Source cos :: CFloat -> CFloat Source tan :: CFloat -> CFloat Source asin :: CFloat -> CFloat Source acos :: CFloat -> CFloat Source atan :: CFloat -> CFloat Source sinh :: CFloat -> CFloat Source cosh :: CFloat -> CFloat Source tanh :: CFloat -> CFloat Source asinh :: CFloat -> CFloat Source acosh :: CFloat -> CFloat Source atanh :: CFloat -> CFloat Source log1p :: CFloat -> CFloat Source expm1 :: CFloat -> CFloat Source log1pexp :: CFloat -> CFloat Source log1mexp :: CFloat -> CFloat Source
Fractional CFloat
Methods (/) :: CFloat -> CFloat -> CFloat Source recip :: CFloat -> CFloat Source fromRational :: Rational -> CFloat Source
Num CFloat
Methods (+) :: CFloat -> CFloat -> CFloat Source (-) :: CFloat -> CFloat -> CFloat Source (*) :: CFloat -> CFloat -> CFloat Source negate :: CFloat -> CFloat Source abs :: CFloat -> CFloat Source signum :: CFloat -> CFloat Source fromInteger :: Integer -> CFloat Source
Ord CFloat
Methods compare :: CFloat -> CFloat -> Ordering Source (<) :: CFloat -> CFloat -> Bool Source (<=) :: CFloat -> CFloat -> Bool Source (>) :: CFloat -> CFloat -> Bool Source (>=) :: CFloat -> CFloat -> Bool Source max :: CFloat -> CFloat -> CFloat Source min :: CFloat -> CFloat -> CFloat Source
Read CFloat
Methods readsPrec :: Int -> ReadS CFloat Source readList :: ReadS [CFloat] Source readPrec :: ReadPrec CFloat Source readListPrec :: ReadPrec [CFloat] Source
Real CFloat
Methods toRational :: CFloat -> Rational Source
RealFloat CFloat
Methods floatRadix :: CFloat -> Integer Source floatDigits :: CFloat -> Int Source floatRange :: CFloat -> (Int, Int) Source decodeFloat :: CFloat -> (Integer, Int) Source encodeFloat :: Integer -> Int -> CFloat Source exponent :: CFloat -> Int Source significand :: CFloat -> CFloat Source scaleFloat :: Int -> CFloat -> CFloat Source isNaN :: CFloat -> Bool Source isInfinite :: CFloat -> Bool Source isDenormalized :: CFloat -> Bool Source isNegativeZero :: CFloat -> Bool Source isIEEE :: CFloat -> Bool Source atan2 :: CFloat -> CFloat -> CFloat Source
RealFrac CFloat
Methods properFraction :: Integral b => CFloat -> (b, CFloat) Source truncate :: Integral b => CFloat -> b Source round :: Integral b => CFloat -> b Source ceiling :: Integral b => CFloat -> b Source floor :: Integral b => CFloat -> b Source
Show CFloat
Methods showsPrec :: Int -> CFloat -> ShowS Source show :: CFloat -> String Source showList :: [CFloat] -> ShowS Source
Storable CFloat
Methods sizeOf :: CFloat -> Int Source alignment :: CFloat -> Int Source peekElemOff :: Ptr CFloat -> Int -> IO CFloat Source pokeElemOff :: Ptr CFloat -> Int -> CFloat -> IO () Source peekByteOff :: Ptr b -> Int -> IO CFloat Source pokeByteOff :: Ptr b -> Int -> CFloat -> IO () Source peek :: Ptr CFloat -> IO CFloat Source poke :: Ptr CFloat -> CFloat -> IO () Source

newtype CDouble Source

Haskell type representing the C double type.

Constructors

CDouble Double

Instances

Enum CDouble
Methods succ :: CDouble -> CDouble Source pred :: CDouble -> CDouble Source toEnum :: Int -> CDouble Source fromEnum :: CDouble -> Int Source enumFrom :: CDouble -> [CDouble] Source enumFromThen :: CDouble -> CDouble -> [CDouble] Source enumFromTo :: CDouble -> CDouble -> [CDouble] Source enumFromThenTo :: CDouble -> CDouble -> CDouble -> [CDouble] Source
Eq CDouble
Methods (==) :: CDouble -> CDouble -> Bool Source (/=) :: CDouble -> CDouble -> Bool Source
Floating CDouble
Methods pi :: CDouble Source exp :: CDouble -> CDouble Source log :: CDouble -> CDouble Source sqrt :: CDouble -> CDouble Source (**) :: CDouble -> CDouble -> CDouble Source logBase :: CDouble -> CDouble -> CDouble Source sin :: CDouble -> CDouble Source cos :: CDouble -> CDouble Source tan :: CDouble -> CDouble Source asin :: CDouble -> CDouble Source acos :: CDouble -> CDouble Source atan :: CDouble -> CDouble Source sinh :: CDouble -> CDouble Source cosh :: CDouble -> CDouble Source tanh :: CDouble -> CDouble Source asinh :: CDouble -> CDouble Source acosh :: CDouble -> CDouble Source atanh :: CDouble -> CDouble Source log1p :: CDouble -> CDouble Source expm1 :: CDouble -> CDouble Source log1pexp :: CDouble -> CDouble Source log1mexp :: CDouble -> CDouble Source
Fractional CDouble
Methods (/) :: CDouble -> CDouble -> CDouble Source recip :: CDouble -> CDouble Source fromRational :: Rational -> CDouble Source
Num CDouble
Methods (+) :: CDouble -> CDouble -> CDouble Source (-) :: CDouble -> CDouble -> CDouble Source (*) :: CDouble -> CDouble -> CDouble Source negate :: CDouble -> CDouble Source abs :: CDouble -> CDouble Source signum :: CDouble -> CDouble Source fromInteger :: Integer -> CDouble Source
Ord CDouble
Methods compare :: CDouble -> CDouble -> Ordering Source (<) :: CDouble -> CDouble -> Bool Source (<=) :: CDouble -> CDouble -> Bool Source (>) :: CDouble -> CDouble -> Bool Source (>=) :: CDouble -> CDouble -> Bool Source max :: CDouble -> CDouble -> CDouble Source min :: CDouble -> CDouble -> CDouble Source
Read CDouble
Methods readsPrec :: Int -> ReadS CDouble Source readList :: ReadS [CDouble] Source readPrec :: ReadPrec CDouble Source readListPrec :: ReadPrec [CDouble] Source
Real CDouble
Methods toRational :: CDouble -> Rational Source
RealFloat CDouble
Methods floatRadix :: CDouble -> Integer Source floatDigits :: CDouble -> Int Source floatRange :: CDouble -> (Int, Int) Source decodeFloat :: CDouble -> (Integer, Int) Source encodeFloat :: Integer -> Int -> CDouble Source exponent :: CDouble -> Int Source significand :: CDouble -> CDouble Source scaleFloat :: Int -> CDouble -> CDouble Source isNaN :: CDouble -> Bool Source isInfinite :: CDouble -> Bool Source isDenormalized :: CDouble -> Bool Source isNegativeZero :: CDouble -> Bool Source isIEEE :: CDouble -> Bool Source atan2 :: CDouble -> CDouble -> CDouble Source
RealFrac CDouble
Methods properFraction :: Integral b => CDouble -> (b, CDouble) Source truncate :: Integral b => CDouble -> b Source round :: Integral b => CDouble -> b Source ceiling :: Integral b => CDouble -> b Source floor :: Integral b => CDouble -> b Source
Show CDouble
Methods showsPrec :: Int -> CDouble -> ShowS Source show :: CDouble -> String Source showList :: [CDouble] -> ShowS Source
Storable CDouble
Methods sizeOf :: CDouble -> Int Source alignment :: CDouble -> Int Source peekElemOff :: Ptr CDouble -> Int -> IO CDouble Source pokeElemOff :: Ptr CDouble -> Int -> CDouble -> IO () Source peekByteOff :: Ptr b -> Int -> IO CDouble Source pokeByteOff :: Ptr b -> Int -> CDouble -> IO () Source peek :: Ptr CDouble -> IO CDouble Source poke :: Ptr CDouble -> CDouble -> IO () Source

Other types

data CFile Source

Haskell type representing the C FILE type.

data CFpos Source

Haskell type representing the C fpos_t type.

data CJmpBuf Source

Haskell type representing the C jmp_buf type.

© The University of Glasgow and others
Licensed under a BSD-style license (see top of the page).
https://downloads.haskell.org/~ghc/8.0.1/docs/html/libraries/base-4.9.0.0/Foreign-C-Types.html

Foreign.C.Types

Foreign.C.Types

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Description

Representations of C types

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