HASH

Description

Calculates the hash value of a given string key using different hash functions.

A hash function is a reproducible method of turning some kind of data (string) into a (relatively) small number that may serve as a digital "fingerprint" of the data.

Syntax

n = HASH (HashType, sKey [, MaxValue])

Returns

Number between 1 and %MAXDWORD

Parameters

Name	Type	Optional	Meaning
HashType	Numeric	No	You can choose from 2 different type of hash algorithm. Indicate here 1 or 2. Both algorithms try to return the best distributed value.
sKey	String	No	String expression
MaxValue	Numeric	Yes	Optional maximum value you want the function to return. If present, MaxValue will be used to compound the MOD of the returning value.

Remarks

More info can be found here: http://en.wikipedia.org/wiki/Hash_function

Restrictions

If sKey is an empty string, zero will be returned.