org.agrona.collections

Class Hashing

java.lang.Object

org.agrona.collections.Hashing

public class Hashing
extends java.lang.Object

Hashing functions for applying to integers.

Constructor Summary

Constructors

Constructor and Description
Hashing()

Method Summary

Modifier and Type	Method and Description
static int	evenHash(int value, int mask) Generate an even hash for a int value.
static int	evenHash(long value, int mask) Generate an even hash for a long value.
static int	hash(int value, int mask) Generate a hash for a int value.
static int	hash(int valueOne, int valueTwo, int mask) Generate a hash for two ints.
static int	hash(long value, int mask) Generate a hash for a long value.

Methods inherited from class java.lang.Object

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

Constructor Detail

Hashing

public Hashing()

Method Detail

hash

public static int hash(int value,
                       int mask)

Generate a hash for a int value.

Parameters:

value - to be hashed.

mask - mask to be applied that must be a power of 2 - 1.

Returns:

the hash of the value.

hash

public static int hash(long value,
                       int mask)

Generate a hash for a long value.

Parameters:

value - to be hashed.

mask - mask to be applied that must be a power of 2 - 1.

Returns:

the hash of the value.

hash

public static int hash(int valueOne,
                       int valueTwo,
                       int mask)

Generate a hash for two ints.

Parameters:

valueOne - to be hashed.

valueTwo - to be hashed.

mask - mask to be applied that must be a power of 2 - 1.

Returns:

a hash of the values.

evenHash

public static int evenHash(int value,
                           int mask)

Generate an even hash for a int value.

Parameters:

value - to be hashed.

mask - mask to be applied that must be a power of 2 - 1.

Returns:

the hash of the value which is always even.

evenHash

public static int evenHash(long value,
                           int mask)

Generate an even hash for a long value.

Parameters:

value - to be hashed.

mask - mask to be applied that must be a power of 2 - 1.

Returns:

the hash of the value which is always even.