Eqv Operator

Description

Used to perform a logical equivalence on two expressions.

Syntax

result = expression1 Eqv expression2

The Eqv operator syntax has these parts:

Part	Description

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

Remarks

If either expression is a Null, result is also a Null. When neither expression is a Null, result is determined according to the following table:

*If expression1* is**	*And expression2* is**	*The result* is**

True	True	True
True	False	False
False	True	False
False	False	True

The Eqv operator performs a bit-wise comparison of identically positioned bits in two numeric expressions and sets the corresponding bit in result according to the following truth table:

*If bit in expression1* is**	*And bit in expression2* is**	*The result* is**

0	0	1
0	1	0
1	0	0
1	1	1

See Also

Operator Precedence.

Example

This example uses the Eqv operator to perform logical equivalence on two expressions.

A = 10: B = 8: C = 6 : D = Null    ' Initialize variables.
MyCheck = A > B Eqv B > C    ' Returns True.
MyCheck = B > A Eqv B > C    ' Returns False.
MyCheck = A > B Eqv B > D    ' Returns Null.
MyCheck = A Eqv B            ' Returns -3 (bit-wise comparison).