edu.berkeley.nlp.lm.util

Class MurmurHash

java.lang.Object

edu.berkeley.nlp.lm.util.MurmurHash

public final class MurmurHash
extends java.lang.Object

Taken/modified from http://d3s.mff.cuni.cz/~holub/sw/javamurmurhash/MurmurHash.java

Constructor Summary

Constructors

Constructor and Description
MurmurHash()

Method Summary

Modifier and Type	Method and Description
static int	hash32(int[] data, int startPos, int endPos)
static int	hash32(int[] data, int startPos, int endPos, int seed) Generates 32 bit hash from byte array of the given length and seed.
static long	hashOneLong(long k_, int seed)
static long	hashThreeLongs(long k1, long k2, long k3)

Methods inherited from class java.lang.Object

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

Constructor Detail

MurmurHash

public MurmurHash()

Method Detail

hash32

public static int hash32(int[] data,
                         int startPos,
                         int endPos,
                         int seed)

Generates 32 bit hash from byte array of the given length and seed.

Parameters:

data - int array to hash

length - length of the array to hash

seed - initial seed value

Returns:

32 bit hash of the given array

hash32

public static int hash32(int[] data,
                         int startPos,
                         int endPos)

hashOneLong

public static long hashOneLong(long k_,
                               int seed)

hashThreeLongs

public static long hashThreeLongs(long k1,
                                  long k2,
                                  long k3)