> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of John H Kington
>
> John,
>
> > John,
> > >>
> > >> >INCLUDE COND=(1,9,CH,GE,C'000000000',AND,1,9,CH,LE,C'999999999')
> > >>
> > >> That would allow '00x000001'.
> > >
> > >How so? Any position in the field less than c'0' (x'F0') would
cause
> > >the entire field to evaluate less than c'000000000', thus failing
the
> GE
> > >requirement; and any position in the field greater than c'9'
(x'F9')
> > >would cause the entire field to evaluate greater than c'999999999',
> thus
> > >failing the LE requirement.
> >
> > Once you hit a character that is greater than zero (F0) in any
> position in the field, the remainder of
> > the field can be anything including blanks or hex zeros for the
first
> test. Any character less than 9
> > (F9) will satisfy the second part of the test.
>
> >Visualize it with these parameters:
>
> >INCLUDE COND=(1,6,CH,GE,C'SMITH ',AND,1,6,CH,LE,C'SMYTHE')
> >
> >Show how, e.g., c'SMILEY' in positions 1 through 6 would qualify for
> >Inclusion in the output.
>
> SMILEY would fail because every character is the same until you hit
the L but what about SMO99Y where
> you wanted every position in the field to be alphabetic?
As specified, the second ("upper") bound is (1,6,CH,LE,C'SMYTHE'), so
"do the comparisons":
First character 'S' is less or equal to 'S', so it "qualifies;
Second character 'M' is less or equal to 'M', so it "qualifies";
Third character 'O' is less or equal to 'Y', so it "qualifies";
Fourth character '9' is NOT less or equal to 'T', so the entire value
c'SMO99Y' is "disqualified".
-jc-
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