combit List & Label
Logical Operators
A logical operator is a function that returns a true/false value. The result (return value) is the Boolean value true or false.
Depending on the type of logical operator, the compound expression is true if both joined expressions are true (AND conjunction) or if at least one of the joined expressions is true (OR conjunction).
The rules of precedence are: Negations are evaluated first, then the "logical AND" and finally the "logical OR".
Example: Zip code >=70000 AND zip code <=80000
|
Operator |
Meaning |
Data type |
|
NOT or .NOT. |
negation |
Boolean |
|
AND or .AND. |
logical AND |
Boolean |
|
OR or .OR. |
logical OR |
Boolean |
|
XOR or .XOR. |
logical exclusive OR |
Boolean |