http://www.perlmonks.org?node_id=804235


in reply to Re^3: sprintf rounding convention
in thread sprintf rounding convention

I think the main problem is that neither of those two numbers can be accurately represented by binary (IEEE) floating points.

For what it's worth, I get the same results as your linux test on my intel macbook, v5.8.9 built for darwin-2level and v5.8.8 built for darwin-thread-multi-2level.