postgrest/docs/Bits.md

Bits

{-# LANGUAGE BinaryLiterals #-}

42 = 0b101010

Bit Operations

.&.

(.&.) :: Bits a => a -> a -> a

Example:

.|.

(.|.) :: Bits a => a -> a -> a

Example:

xor

xor :: Bits a => a -> a -> a

Example:

> True `xor` False
True

> True `xor` True
False

> 0b101 `xor` 0b011
6 -- 0b110

complement

complement :: Bits a => a -> a

> complement True
False

> complement 0b101
-2 -- -0b010

Example:

shift

Example:

shift :: Bits a => a -> Int -> a

Example:

rotate

rotate :: Bits a => a -> Int -> a

Example:

zeroBits

zeroBits :: Bits a => a

Example:

bit

bit :: Bits a => Int -> a

Example:

Bit Testing

setBit :: Bits a => a -> Int -> a

clearBit :: Bits a => a -> Int -> a

complementBit

complementBit :: Bits a => a -> Int -> a

Example:

λ> 0b100 `complementBit` 1
6 -- 0b110

testBit

testBit :: Bits a => a -> Int -> Bool

Example:

> 0b10 `testBit` 0
False
> 0b10 `testBit` 1
True

isSigned

isSigned :: Bits a => a -> Bool

> isSigned 42
True
> isSigned True
False

Bit Size

bitSize :: Bits a => a -> Int

popCount :: Bits a => a -> Int

Bit Shifting

shiftL :: Bits a => a -> Int -> a

shiftR :: Bits a => a -> Int -> a

Bit Rotation

rotate :: Bits a => a -> Int -> a

rotateL :: Bits a => a -> Int -> a

rotateR :: Bits a => a -> Int -> a

Byte Swapping

byteSwap16 :: Word16 -> Word16

byteSwap32 :: Word32 -> Word32

byteSwap64 :: Word64 -> Word64