 # 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..     Average rating: 4.6 (23 votes) Log in to vote Tim Griffith - Show more from this author
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. Erich, GermanyAug 15, 2012 What about: let( [ lb=if(Number;lg(Number);1,3) ]; if(lb = int(lb);1+lb;0) ) It's much shorter.