Copyright	Copyright © 2021 Lars Kuhtz <lakuhtz@gmail.com>
License	BSD3
Maintainer	Lars Kuhtz <lakuhtz@gmail.com>
Stability	experimental
Safe Haskell	None
Language	Haskell2010

Data.Cuckoo.Internal.HashFunctions

Contents

Salted Hash Functions
- Salted Sip Hash
Internal Use Only

Description

Synopsis

saltedFnv1aPtr :: Int -> Ptr Word8 -> Int -> IO Word64
saltedFnv1aStorable :: Storable a => Int -> a -> Word64
saltedFnv1aByteString :: Int -> ByteString -> Word64
saltedSipHashPtr :: Int -> Ptr Word8 -> Int -> IO Word64
saltedSipHashStorable :: Storable a => Int -> a -> Word64
saltedSipHashByteString :: Int -> ByteString -> Word64
sipHashInternal :: Storable a => Int -> a -> Word64

Salted Hash Functions

saltedFnv1aPtr Source #

Arguments

:: Int	Salt
-> Ptr Word8	Bytes that are hashed
-> Int	Number of bytes
-> IO Word64

Computes a 64 bit Fnv1a hash for a value that is an instance of ByteArrayAccess.

The first argument is use as a salt.

saltedFnv1aStorable Source #

Arguments

:: Storable a
=> Int	Salt
-> a	Value that is hashed
-> Word64

Computes a 64 bit Fnv1a hash for a value that has an Storable instance.

The first argument is use as a salt.

saltedFnv1aByteString Source #

Arguments

:: Int	Salt
-> ByteString	Bytes that are hashed
-> Word64

Salted Sip Hash

saltedSipHashPtr Source #

Arguments

:: Int	Salt
-> Ptr Word8	Bytes that is hashed
-> Int	Number of bytes
-> IO Word64

Computes a Sip hash for a value that is represented as byte pointer.

The first argument is a salt value that is used to derive the key for the hash computation.

saltedSipHashStorable Source #

Arguments

:: Storable a
=> Int	Salt
-> a	Value that is hashed
-> Word64

Computes a Sip hash for a value that has an Storable instance.

The first argument is a salt value that is used to derive the key for the hash computation.

saltedSipHashByteString Source #

Arguments

:: Int	Salt
-> ByteString	Value that is hashed
-> Word64

Computes a Sip hash for a value that has an Storable instance.

The first argument is a salt value that is used to derive the key for the hash computation.

Internal Use Only

sipHashInternal :: Storable a => Int -> a -> Word64 Source #

An version of a Sip hash that is used only internally. In order to avoid dependencies between different hash computations, it shouldn't be used in the implementation of instances of CuckooFilterHash.