It don't think it has anything to do with how the numbers are represented in floating point. I think what you're seeing is a result of sprintf() following IEEE rounding semantics. It's something like even least significant digits round up at the half-way mark and odd round down at the half-way mark.

Search google for IEEE rounding semantics and I'm sure you'll find a better reference than I.

duff

Update: doh! There's even a mention in perldoc -q round

In reply to Re: Rounding a number using (s)printf by duff
in thread Rounding a number using (s)printf by the_slycer

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