Strange result with exponents...

[Scott Klement <klemscot@xxxxxxxxxxxx>]

Someone posted this question on the iSeries Network's RPG forum, and it
stumped me, so I thought I'd bring it here and see what you guys think.

I'm running the following code.   The two numbers, VAR1 and VAR2 should
have the same results, shouldn't they?

     d VAR2            S             30p 0
     d VAR1            s             30p 0

     c                   eval      VAR2 = (16**15)
     c     VAR2          dsply

     c                   eval      VAR1 = (16**14)
     c                   eval      VAR1 = VAR1 * 16
     c                   dsply                   VAR1

     c                   eval      *inlr = *on

The result of running this program looks like this:

DSPLY             1152921504606846980
DSPLY             1152921504606846976

So, my question is, what's going on here?   And, why would there be a
difference of 4?!

As far as I can tell, this only happens on V5R2.  Can anyone confirm that
it doesn't happen on older releases?