net.jpountz.xxhash

Class XXHash64

java.lang.Object

net.jpountz.xxhash.XXHash64

public abstract class XXHash64
extends Object

A 64-bits hash.

Instances of this class are thread-safe.

Constructor Summary

Constructors

Constructor and Description
XXHash64()

Method Summary

Modifier and Type	Method and Description
abstract long	hash(byte[] buf, int off, int len, long seed) Computes the 64-bits hash of buf[off:off+len] using seed seed.
abstract long	hash(ByteBuffer buf, int off, int len, long seed) Computes the hash of the given slice of the ByteBuffer.
long	hash(ByteBuffer buf, long seed) Computes the hash of the given ByteBuffer.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

XXHash64

public XXHash64()

Method Detail

hash

public abstract long hash(byte[] buf,
                          int off,
                          int len,
                          long seed)

Computes the 64-bits hash of buf[off:off+len] using seed seed.

Parameters:

buf - the input data

off - the start offset in buf

len - the number of bytes to hash

seed - the seed to use

Returns:

the hash value

hash

public abstract long hash(ByteBuffer buf,
                          int off,
                          int len,
                          long seed)

Computes the hash of the given slice of the ByteBuffer. position and limit are not modified.

Parameters:

buf - the input data

off - the start offset in buf

len - the number of bytes to hash

seed - the seed to use

Returns:

the hash value

hash

public final long hash(ByteBuffer buf,
                       long seed)

Computes the hash of the given ByteBuffer. The position is moved in order to reflect bytes which have been read.

Parameters:

buf - the input data

seed - the seed to use

Returns:

the hash value

toString

public String toString()

Overrides:

toString in class Object