Not Operator

Description

Used to perform logical negation on an expression.

Syntax

result = Not expression

The Not operator syntax has these parts:

Part

Description

result

Any numeric variable.

expression

Any expression.


Remarks

The following table illustrates how result is determined:

If expression is

Then result is

True

False

False

True

Null

Null


In addition, the Not operator inverts the bit values of any variable and sets the corresponding bit in result according to the following truth table:

TR>

Bit in expression

Bit in result

0

1

1

0


See Also

Operator Precedence.

Example

This example uses the Not operator to perform logical negation on an expression.


A = 10: B = 8: C = 6: D = Null    ' Initialize variables.= Not(A > B)                ' Returns False.= Not(B > A)                ' Returns True.= Not(C > D)                ' Returns Null.= Not A                    ' Returns -11 (bit-wise comparison).