include/linux/xxhash.h

2  * xxHash - Extremely Fast Hash algorithm
44  * xxHash is an extremely fast Hash algorithm, running at RAM speed limits.
64  * Q.Score is a measure of quality of the hash function.
81  * Simple Hash Functions
85  * xxh32() - calculate the 32-bit hash of the input with a given seed.
87  * @input:  The data to hash.
88  * @length: The length of the data to hash.
93  * Return:  The 32-bit hash of the data.
98  * xxh64() - calculate the 64-bit hash of the input with a given seed.
100  * @input:  The data to hash.
101  * @length: The length of the data to hash.
106  * Return:  The 64-bit hash of the data.
111  * xxhash() - calculate wordsize hash of the input with a given seed
112  * @input:  The data to hash.
113  * @length: The length of the data to hash.
116  * If the hash does not need to be comparable between machines with
120  * Return:  wordsize hash of the data.
134  * Streaming Hash Functions
174  * @seed:  Initialize the hash state with this seed.
181  * xxh32_update() - hash the data given and update the xxh32 state
184  * @input:  The data to hash.
185  * @length: The length of the data to hash.
194  * xxh32_digest() - produce the current xxh32 hash
196  * @state: Produce the current xxh32 hash of this state.
198  * A hash value can be produced at any time. It is still possible to continue
199  * inserting input into the hash state after a call to xxh32_digest(), and
202  * Return: The xxh32 hash stored in the state.
210  * @seed:  Initialize the hash state with this seed.
215  * xxh64_update() - hash the data given and update the xxh64 state
217  * @input:  The data to hash.
218  * @length: The length of the data to hash.
227  * xxh64_digest() - produce the current xxh64 hash
229  * @state: Produce the current xxh64 hash of this state.
231  * A hash value can be produced at any time. It is still possible to continue
232  * inserting input into the hash state after a call to xxh64_digest(), and
235  * Return: The xxh64 hash stored in the state.