Help with Mod and / Functions in VBA

pokeManiac

New Member
Joined
Dec 9, 2014
Messages
3
Hi,

I need help with writing the Mod and / functions in VBA in a different way. I read in another thread that these two intrinsically produce results of the Long data type. But I need more than that. This is my convertToHex function which takes in as argument a decimal number:

result = ""
while decNum > 16
result = choose(decNum Mod 16 + 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, "A", "B", "C", "D", "E", "F") & result
decNum = Int(decNum / 16)
wend
convertToHex = choose(decNum + 1, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, "A", "B", "C", "D", "E", "F") & result

It works fine for a hexadecimal value with seven digits. But when the computation produces an eighth, I get an overflow error.

Help!
 

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Darren Bartrup

Well-known Member
Joined
Mar 13, 2006
Messages
1,296
Office Version
  1. 365
Platform
  1. Windows
Hi and welcome to the board,

Couldn't you just use HEX(123456) or EVALUATE("DEC2HEX(123456)") rather than write a function?
 

pokeManiac

New Member
Joined
Dec 9, 2014
Messages
3
Hahahahaha! I didn't know there was a HEX function in vba. That would certainly simplify everything. I would just like to know though how EVALUATE works. I tried looking it up on Excel's help tool but nothing came up.
 

pokeManiac

New Member
Joined
Dec 9, 2014
Messages
3
I tried using the HEX function but I'm still getting an overflow error. This is how my statement now looks like:

doXorCalc = Hex(convertToDec(hexValue1) Xor convertToDec(hexValue2))

where hexValue1 and hexValue2 are string representations of the hexadecimal values I want to do the XOR operation on and doXorCalc is the function returning the result. I even tried converting the data type to DECIMAL with the CDEC function after getting the decimal values but it still would not work.

What am I doing wrong here?
 
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