RE: Math Weirdness - Can it be done with integers alone??

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[quote]
I don't quite understand your problem, but I use integers for any monetary
workings as you can guarantee it is accurate (obviously, you work in pence
or cents rather than GBP or USD).

 

Alex
  

Hello Alex,

I was reading through this thread, and I was curious about what methods you
use to handle fractions of a dollar and/or fractions of a penny if you are
always using integers.  Do you only use a decimal for printing?  do you
adjust all interest rates, etc...then as well?  How about when interest
calculations result in fractions of pennies, how do you handle it then? 
Basically, I can't see how it could be done with just integers alone?  

thanks

dank
[/quote]

To be honest, I haven't used it for any complicated use - shopping carts are
additive contraptions. However, I don't see the problem.

1) I use Smarty a lot - I use a plugin to format the integer to a price (ie
divide by 100 and display in 2 decimal places). So yes, I only put the
decimal place there to print.

2) Why do interest rates need to be changed?? Take £123.45 @ 5%. 123.45 *
1.05 = (12345 [pennies] / 100) [pounds] * 1.05 = (12345 * 1.05) / 100
   Same calculation in my mind!! (Tell me if I have missed the point!!)

3) If you have a fraction of a penny - round it!! Surely, that's what the
banks do!! It's a penny!!

I think it can be done with integers alone - let me know if you disagree!!

Alex

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