Eqv operator
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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