lookup3.h File Reference

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Functions
uint32_t	hashword (const uint32_t *k, size_t length, uint32_t initval)
uint32_t	hashlittle (const void *k, size_t length, uint32_t initval)
void	hash_set_raninit (uint32_t v)

Detailed Description

This file contains header definitions for the hash functions we use. The hash functions are public domain (see lookup3.c).

Definition in file lookup3.h.

Function Documentation

hash_set_raninit()

void hash_set_raninit

(

uint32_t

v

)

Set the randomisation initial value, set this before threads start, and before hashing stuff (because it changes subsequent results).

Parameters

v

value

hashlittle()

uint32_t hashlittle	(	const void *	k,
		size_t	length,
		uint32_t	initval )

Hash key data.

Parameters

k	the key, array of uint8_t
length	the length of the key, in uint8_ts
initval	the previous hash, or an arbitrary value

Returns

: hash value.

hashword()

uint32_t hashword	(	const uint32_t *	k,
		size_t	length,
		uint32_t	initval )

Hash key made of 4byte chunks.

Parameters

k	the key, an array of uint32_t values
length	the length of the key, in uint32_ts
initval	the previous hash, or an arbitrary value

Returns

: hash value.