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There are 2,522 functions in this library.

LuhnProduct ( doubleEven )

Part of the Luhn function

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Geoff Wells
DataIsland Software LLC
http://www.dataisland.com

Sample input:

NA - Part of the Luhn function

Sample output:

Function definition: (Copy & paste into FileMaker's Edit Custom Function window)

/*
A component of the Luhn function.

Add all the numbers together

*/

If ( Length ( doubleEven )  > 0 ; 

Middle(doubleEven ; 1; 1) + Middle(doubleEven ; 2; 1) + LuhnProduct ( Right ( doubleEven ; Length ( doubleEven )  - 2 )  )

 ; "" )

One of two additional functions that must be defined before Luhn.

Comments

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