🚀 go-pugleaf

dataman@cyberdude.com wrote:
> 
> I am really confused about float precision ..officially it's 3.4 *
> (10**-38) to 3.4 * (10**+38)
> But, that does not help me much even it confuse me more ....
> 
> Here is my problem:
> 
> I need to define a world of 10 000 000 units .  I need to use float for
> that . I think to use only the positive part (but will depend from the
> answer of my question).
> What precision (after the dot ) can i expect  ?
> 

Not much. If you need to do some arithmetic on the
coordinates, and you will need to do this, you run
into big problems. floats usually have a precision
of 6 or 7 digits. If you do some arithmetics on
them, the error grows very rapidly, so better count
with 5 or 6 significant digits. Since you used all
of them for the integer part, .....

-----------------------------------------------------------
Karl Heinz Buchegger
kbuchegg@gascad.at