Re: Strange behavior w/%editc()

>(Negative minus a negative is an addition).
Do you mean Negative "multiply" by Negative is an addition?

----- Original Message -----
From: <rob@dekko.com>
To: <rpg400-l@midrange.com>
Sent: Tuesday, February 26, 2002 10:34 AM
Subject: RE: Strange behavior w/%editc()


>
> >This is part and parcel of the 'expression' rules for EVAL.
> Basically, 'fiscalYr - 1' is an expression.  In order to hold all the
> possible digits of the resulting value, the compiler applies some rules to
> create an 'intermediate' or 'work' variable.  The %editc() is working
> against the work variable.
>
> I wondered about that.  I should have tested that.  Changing my program
> from:
>        headdesc = 'Fixed Model FY ' + %editc(fiscalYr - 1:'X');
>        dsply headdesc;
>        headdesc = 'Fixed Model FY ' + %editc(year1 - 1:'X');
>        dsply headdesc;
>        headdesc = 'Fixed Model FY ' + %editc(year2 - 1:'X');
>        dsply headdesc;
>        headdesc = 'Fixed Model FY ' + %editc(year3 - 1:'X');
>        dsply headdesc;
> to:
>        headdesc = 'Fixed Model FY ' + %editc(fiscalYr:'X');
>        dsply headdesc;
>        headdesc = 'Fixed Model FY ' + %editc(year1:'X');
>        dsply headdesc;
>        headdesc = 'Fixed Model FY ' + %editc(year2:'X');
>        dsply headdesc;
>        headdesc = 'Fixed Model FY ' + %editc(year3:'X');
>        dsply headdesc;
> changed the results from:
> DSPLY  Fixed Model FY 02001
> DSPLY  Fixed Model FY 02002
> DSPLY  Fixed Model FY 02003
> DSPLY  Fixed Model FY 002004
> to:
> DSPLY  Fixed Model FY 2002
> DSPLY  Fixed Model FY 2003
> DSPLY  Fixed Model FY 2004
> DSPLY  Fixed Model FY 02005
>
>
> It just baffles me as to why the compiler thought to add an extra digit on
> a subtraction.  Granted if it was a variable, and there was a possibility
> that the variable was negative, then it would make sense.  (Negative minus
> a negative is an addition.  And if year was 9999 -(-1) would be 10000 or
> 0000 in 4 digits.)  But that isn't the case here.
>
> Rob Berendt
> --
> "They that can give up essential liberty to obtain a little temporary
> safety deserve neither liberty nor safety."
> Benjamin Franklin
>
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