Brian Dunning's FileMaker Custom Functions

IsNthBinRoot ( Number ; Factor )

Calculates whether a number is a binary positional number, i.e., 001 is the first binary position, 010 (2) is the second binary position, 100 (4) is the third binary position, etc..

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Tim Griffith   Tim Griffith

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  Sample input:
IsNthBinRoot ( 256 ; "" )
IsNthBinRoot ( 11 ; "" )
  Sample output:
9,
0

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

IsNthBinRoot ( Number ; Factor ) Factor is initially an empty set "". Calculates whether a number is a binary positional number, i.e., 001 is the first binary position, 010 (2) is the second binary position, 100 (4) is the third binary position, etc.. All numbers that do not represent a binary position return zero ('0'). DEPENDENCY FUNCTION: 'IsNthRootNumToBin (decNumber ; binary )' This dependent function is comment included at the end of this function for your convenience.

 

Comments

Erich   Erich, Germany
Aug 15, 2012
What about:

let(
[
lb=if(Number;lg(Number);1,3)
];
if(lb = int(lb);1+lb;0)
)

It's much shorter.
 

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