vl_hash.c File Reference

#include "vl_hash.h"
#include "vl_memory.h"

Include dependency graph for vl_hash.c:

Functions
vl_hash	vlHashString (const void *data, vl_memsize_t dataSize)
	Hashes the specified string.
vl_hash	vlHash8 (const void *data, vl_memsize_t s)
	Generates a hash code for the 8-bit sequence at the specified address.
vl_hash	vlHash16 (const void *data, vl_memsize_t s)
	Generates a hash code for the 16-bit sequence at the specified address. This is a direct bitcast of an 8-bit sequence to a 64-bit sequence. The returned value will equal the value of the original sequence.
vl_hash	vlHash32 (const void *data, vl_memsize_t s)
	Generates a hash code for the 32-bit sequence at the specified address.
vl_hash	vlHash64 (const void *data, vl_memsize_t s)
	Generates a hash code for the 64-bit sequence at the specified address.

Function Documentation

vlHash16()

vl_hash vlHash16	(	const void *	data,
		vl_memsize_t	s )

Generates a hash code for the 16-bit sequence at the specified address. This is a direct bitcast of an 8-bit sequence to a 64-bit sequence. The returned value will equal the value of the original sequence.

Parameters

data

pointer

Returns

hash code

vlHash32()

vl_hash vlHash32	(	const void *	data,
		vl_memsize_t	s )

Generates a hash code for the 32-bit sequence at the specified address.

This is a direct bitcast of an 32-bit sequence to a 64-bit sequence. The returned value will equal the value of the original sequence.

Parameters

data

pointer

Returns

hash code

vlHash64()

vl_hash vlHash64	(	const void *	data,
		vl_memsize_t	s )

Generates a hash code for the 64-bit sequence at the specified address.

The returned value will equal the value of the original sequence.

Parameters

data

pointer

Returns

hash code

vlHash8()

vl_hash vlHash8	(	const void *	data,
		vl_memsize_t	s )

Generates a hash code for the 8-bit sequence at the specified address.

This is a direct bitcast of an 8-bit sequence to a 64-bit sequence. The returned value will equal the value of the original sequence.

Parameters

data

pointer

Returns

hash code

vlHashString()

vl_hash vlHashString	(	const void *	data,
		vl_memsize_t	dataSize )

Hashes the specified string.

Uses the FNV-1A-64 string hashing algorithm. See here: https://en.wikipedia.org/wiki/Fowler%E2%80%93Noll%E2%80%93Vo_hash_function

Parameters

data	read-only pointer to the data that will be hashed
dataSize	length of the data, in bytes. Usually this can be ignored unless the data is variable in length.

Returns

corresponding hash code.

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