Imp Operator

Microsoft® Visual Basic® Scripting Edition
Imp Operator

Description

Used to perform a logical implication on two expressions.

Syntax

result = expression1 Imp expression2
The Imp operator syntax has these parts:

Part Description

result Any numeric variable.

expression1 Any expression.

expression2 Any expression.

Remarks

The following table illustrates how result is determined:

If expression1 is And expression2 is Then result is

True True True

True False False

True Null Null

False True True

False False True

False Null True

Null True True

Null False Null

Null Null Null
The Imp operator performs a bitwise comparison of identically positioned bits in two numeric expressions and sets the corresponding bit in result according to the following table:

If bit in expression1 is And bit in expression2 is Then result is

0 0 1

0 1 1

1 0 0

1 1 1

Part	Description
result	Any numeric variable.
expression1	Any expression.
expression2	Any expression.

*If expression1* is**	*And expression2* is**	*Then result* is**
True	True	True
True	False	False
True	Null	Null
False	True	True
False	False	True
False	Null	True
Null	True	True
Null	False	Null
Null	Null	Null

*If bit in expression1* is**	*And bit in expression2* is**	*Then result* is**
0	0	1
0	1	1
1	0	0
1	1	1