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From: Leif Svalgaard <leif@leif.org> > From: Booth Martin <Booth@MartinVT.com> > > Leif, would you try one more thing since you are already there, please? > > What happens if you define it as 14S 0 and 15S 0? Does packed vs. signed > > make a difference? > > > > And thank you for doing that test. I've wondered the same thing for a long > > time now. > > no difference as internally they are stored the same way. > BTW, the difference is a lot less than the factor of two we used > to have on the CISC machines. > I should be more precise. I did this with an MI-program where you cannot specify signed/unsigned for packed data. It is possible that in RPG and COBOL, extra code is generate to invert the sign if the result turned out to be negative and you specified unsigned data. This should add to the time in both cases (even and odd), but there should still be a difference. Somebody else might try this. Hey it only takes a minute to write the program.
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