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Eqv operator

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Used to perform a logical equivalence on two expressions.

Syntax

result=expression1 Eqv expression2

The Eqv operator syntax has these parts:

Part Description
result Required; any numeric variable.
expression1 Required; any expression.
expression2 Required; any expression.

Remarks

If either expression is Null, result is also Null. When neither expression is 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 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 The result is
0 0 1
0 1 0
1 0 0
1 1 1

Example

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

Dim A, B, C, D, MyCheck
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 (bitwise comparison).

See also

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