Good point I hadn't considered currency exchange.
This is why you ask why something was implemented that way and not assume
its unnecessary.
Yes I am talking to you Elon ;)
Chris
On 16/11/2022 2:12 am, Thomas Baumgart via KMyMoney-devel wrote:
On Dienstag, 15. November 2022 09:08:44 CET Chris via KMyMoney-devel wrote:
Thanks
I have always used integer's, never floats or doubles, I realised back in
the 90's that was a mistake when implementing credit card transactions.
Rounding errors bite hard.
I have always decided at the start of a project what was the maximum
precision needed, usually 2 decimal places but occasionally more. I can see
with kmymoney 4 digits is the best because I believe that is normal for
shares. however I don't do shares so I could be wrong.
Just looked it up, shares below $1.00 is to 4 decimal places, 2 places
otherwise.
I can see storing it using numerator denominator is more flexible.
4 digits is not enough if it comes to currency exchange. We do have a user
that converts between (I believe) Indonesian Rupia and Euros a lot and
needs at least 10 digits of precision for the price to get correct results.
