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digitSum ( _Zahl )

The digit sum of a given integer is the sum of all its digits

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Alexander Baier - Show more from this author datamat Software Development http://fm-tutorial.de

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

If ( _Zahl ≤ 9 ; _Zahl ; Mod( _Zahl ; 10) + digitSum(Floor( _Zahl / 10 ) ) ) Click to copy

The recursive function sum all digit of a Number.

1234 = 1 + 2 + 3 + 4 = 10

 

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