* Bernie Cosell <[EMAIL PROTECTED]> [2004-04-22 00:02]: > On 21 Apr 2004 at 22:55, A. Pagaltzis wrote: > > 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. > > Correct, but doesn't "%.Xf" round? And so running it through > the (s)printf before you mess with it gets you the desired > rounding, doesn't it?
Yes, that's what I said further down in my mail. The point is that using something like $amt =~ /\.\d\d\d/ will probably lead to inconsistencies because $amt is unrounded, while printf then produces a rounded form that depends on at least one more digit, probably also on whether the non-fractional part is odd or even, and a number of other factors. So if your conditional refers to $amt, it should use math, like ($amt * 1000) % 10. You *can* use string mangling, however, if you mangle the *result*. > When you're pricing things, prices are in dollars and cents.... > except for [...] I know what he wanted and why, and wasn't even saying anything about that. -- Regards, Aristotle "If you can't laugh at yourself, you don't take life seriously enough."
