org.apache.mahout.math.map

Class HashFunctions

java.lang.Object

org.apache.mahout.math.map.HashFunctions

public final class HashFunctions
extends Object

Provides various hash functions.

Method Summary

Methods

Modifier and Type	Method and Description
static int	hash(boolean value) Returns a hashcode for the specified value.
static int	hash(char value) Returns a hashcode for the specified value.
static int	hash(double value) Returns a hashcode for the specified value.
static int	hash(float value) Returns a hashcode for the specified value.
static int	hash(int value) Returns a hashcode for the specified value.
static int	hash(long value) Returns a hashcode for the specified value.
static int	hash(Object object) Returns a hashcode for the specified object.
static int	hash(short value) Returns a hashcode for the specified value.

Methods inherited from class java.lang.Object

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

Method Detail

hash

public static int hash(char value)

Returns a hashcode for the specified value.

Returns:

a hash code value for the specified value.

hash

public static int hash(double value)

Returns a hashcode for the specified value.

Returns:

a hash code value for the specified value.

hash

public static int hash(float value)

Returns a hashcode for the specified value.

Returns:

a hash code value for the specified value.

hash

public static int hash(int value)

Returns a hashcode for the specified value. The hashcode computation is similar to the last step of MurMurHash3.

Returns:

a hash code value for the specified value.

hash

public static int hash(long value)

Returns a hashcode for the specified value.

Returns:

a hash code value for the specified value.

hash

public static int hash(Object object)

Returns a hashcode for the specified object.

Returns:

a hash code value for the specified object.

hash

public static int hash(short value)

Returns a hashcode for the specified value.

Returns:

a hash code value for the specified value.

hash

public static int hash(boolean value)

Returns a hashcode for the specified value.

Returns:

a hash code value for the specified value.