Dave Korn wrote:
> Have you considered that your sunblade might be operating
> in a different rounding mode, by default?
I didn't know there were different rounding modes.
I thought everyone used so-called "unbiased rounding",
so I'm sorry for adding confusion.
> I would imagine that printf may well work under-the-hood
> by shifting the desired decimal places above the point,
> rounding to integer, and printing out that number.
Could be. I haven't dug into those matters, but your
suggestion certainly makes sense.
Anyway, the following line
seq -4.5 1 4.5 | while read x; do printf '%4s -> %3.0f\n' $x $x; done
which gives
-4.5 -> -4
-3.5 -> -3
-2.5 -> -2
-1.5 -> -1
-0.5 -> -1
0.5 -> 1
1.5 -> 1
2.5 -> 2
3.5 -> 3
4.5 -> 4
suggests that printf rounds towards zero, but something
funny happens for -0.5 and 0.5.
Peter
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