hash.h File Reference

#include <stddef.h>
#include <stdint.h>

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Macros
#define	CU_FNV1A32_OFFSET_BASIS   2166136261u
	32-bit FNV-1a offset basis.
#define	CU_FNV1A32_PRIME   16777619u
	32-bit FNV-1a prime.
#define	CU_FNV1A64_OFFSET_BASIS   14695981039346656037ull
	64-bit FNV-1a offset basis.
#define	CU_FNV1A64_PRIME   1099511628211ull
	64-bit FNV-1a prime.
#define	CU_MURMUR3_C1   0xcc9e2d51u
	Murmur3 constant c1.
#define	CU_MURMUR3_C2   0x1b873593u
	Murmur3 constant c2.
#define	CU_MURMUR3_N   0xe6546b64u
	Murmur3 constant used during mixing.
#define	CU_MURMUR3_F1   0x85ebca6bu
	Murmur3 finalization constant 1.
#define	CU_MURMUR3_F2   0xc2b2ae35u
	Murmur3 finalization constant 2.
#define	CU_SIPHASH_V0_INIT   0x736f6d6570736575ull
	SipHash initial v0 constant.
#define	CU_SIPHASH_V1_INIT   0x646f72616e646f6dull
	SipHash initial v1 constant.
#define	CU_SIPHASH_V2_INIT   0x6c7967656e657261ull
	SipHash initial v2 constant.
#define	CU_SIPHASH_V3_INIT   0x7465646279746573ull
	SipHash initial v3 constant.

Functions
uint32_t	cu_Hash_FNV1a32 (const void *data, size_t len)
	Compute a 32-bit FNV-1a hash.
uint64_t	cu_Hash_FNV1a64 (const void *data, size_t len)
	Compute a 64-bit FNV-1a hash.
uint32_t	cu_Hash_Murmur3_32 (const void *data, size_t len, uint32_t seed)
	Compute a 32-bit Murmur3 hash.
uint64_t	cu_Hash_SipHash24 (const uint8_t key[16], const void *data, size_t len)
	Compute SipHash-2-4.

Detailed Description

Hashing utilities.

Function Documentation

cu_Hash_FNV1a32()

uint32_t cu_Hash_FNV1a32	(	const void *	data,
		size_t	len
	)

Compute a 32-bit FNV-1a hash.

Parameters

data	input bytes
len	number of bytes

Compute the 32-bit FNV-1a hash of a buffer.

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cu_Hash_FNV1a64()

uint64_t cu_Hash_FNV1a64	(	const void *	data,
		size_t	len
	)

Compute a 64-bit FNV-1a hash.

Compute the 64-bit FNV-1a hash of a buffer.

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cu_Hash_Murmur3_32()

uint32_t cu_Hash_Murmur3_32	(	const void *	data,
		size_t	len,
		uint32_t	seed
	)

Compute a 32-bit Murmur3 hash.

Compute the 32-bit Murmur3 hash of a buffer.

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cu_Hash_SipHash24()

uint64_t cu_Hash_SipHash24	(	const uint8_t	key[16],
		const void *	data,
		size_t	len
	)

Compute SipHash-2-4.

Compute SipHash-2-4 for the given input.

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