On Tue, 2009-01-13 at 11:26 -0500, Patrick Durusau wrote:
> Greetings!
>
> Just a quick note to check my understanding of the "constraint" listing
> for each function.
>
> Under 6.3.5 Infix Operator "^"
>
> Constraints: OR(Left != 0; Right != 0)
This is the same as:
not (Left == 0 and Right == 0)
so the only thing prohibited is 0^0.
0^(some non-zero number) and (some non-zero number)^0 are both allowed.
>
> Am I reading that correctly to prohibit both, 0^(some number) as well as
> (some number)^0?
>
> It has been a while but I seem to recall that (some number)^0 is valid,
> although it simply returns 1.
>
> Yes?
No :-)
>
> Or have I mis-read the constraint notation?
yes :-)
Andreas
--
Andreas J Guelzow <>
Concordia University College of Alberta
