Simon, You are correct. 

I produce software "products" for a living. Mostly for the banking industry
where there is zero tolerance for some practices.

Example:
The solution is never allowed to be "Just make an offsetting entry in your
general ledger for the lost coins."  "Because Your Computer makes errors in
rounding off with floating point arithmetic."   "You need to demand that
Intel make CPUs that don't have floating point issues."

No - We code to handle currency, decimal points correctly!

http://en.wikipedia.org/wiki/Floating_point#Rounding_modes




-----Original Message-----
As a rule of thumb a Software Product takes about 10x as long to develop as
a Software Program.

Design, QA, Documentation etc.

Simon Brown, HB9DRV
http://sdr-radio.com



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