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Bitwise logic in record selection formula

Posted on 2004-08-31
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Last Modified: 2008-02-01

Public Const LngVal As Long = 2048

'In vb for bitwise operation you do this.
if table.fieldname and Lngval = 0 then
end if

I need to do the same in crystal reports in record selection formula. How to handle bitwise logic in record selection formula in crystal reports.

table.fieldname not in (table.fieldname and lngVal = 0)
or
table.fieldname not in (table.fieldname and lngVal > 0)

Note :

where table.fieldname value is 1114112
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Question by:PradeepYadhav
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2 Comments
 
LVL 10

Expert Comment

by:ebolek
ID: 11941377
all the statements must be boolean, in other words, the formula should give out boolean for record selection formula

you can write smt like this

table.fieldname not in (table.fieldname and lngVal = 0)
or
table.fieldname not in (table.fieldname and lngVal > 0)

and table.fieldname <> 111412

Regards
Emre


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LVL 42

Accepted Solution

by:
frodoman earned 1500 total points
ID: 11941455
Crystal supports the following bit operators: Not, And, Or, Xor, Eqv and Imp

Usage of them is exactly as used in vb.  Note that order of precedence is the order listed above but just like vb you can use parenthesis to override the default order.

I'm not sure exactly what you're trying to accomplish though but I think the formula you want for record selection is actually this:

(not (table.fieldname and lngVal = 0)) and (not (table.fieldname and lngVal > 0))

HTH

frodoman
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