Re: fractional cents

* John Douglas Porter <[email protected]> [2004-04-20 08:39]:
> It seems to me that the precision desired should depend on
> context, and nothing else.  And that being the case...
> 
>   printf $fractional_cents ? '%7.3f' : '%7.sf', $amt;
> 
> irrespective of the value of $amt.  Why is this not right?

What you have written is neutral with regards to the issue I was
referring to.

If you do this by looking at $amt, then your method must be
mathematical, because chopping characters in the string
representation of the unrounded $amt might occasionally lead to
results different from what the mathematical method would have
produced with rounding involved.

If you already do have a string representation consistent with a
rounded $amt, f.ex using sprintf, then it's safe to mangle this
as a string.

So the key here would be what expression decides the value of
your $fractional_cents boolean. And I as I posted a bit before,
it *can* (of course) be done using just math.

-- 
Regards,
Aristotle
 
"If you can't laugh at yourself, you don't take life seriously enough."