Brian Dunning's FileMaker Custom Functions

LuhnDoubleEven ( makeEven )

Part of the Luhn function

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Geoff Wells   Geoff Wells
DataIsland Software LLC

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  Sample input:
NA - called internally by Luhn
  Sample output:

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

One of two additional functions that must be defined before Luhn



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Note: these functions are not guaranteed or supported by Please contact the individual developer with any questions or problems.

Under construction. Email me your wish list for improvements.