Syntax

Expression1 Eqv expression2

Description

Performs a logical or binary equivalence on two expressions.

Comments

If both expressions are either Boolean, Boolean variants, or Null variants, then a logical equivalence is performed as follows:

If the first
expression is

and the second
expression is

then the
result is

TRUE

TRUE

TRUE

TRUE

FALSE

FALSE

FALSE

TRUE

FALSE

FALSE

FALSE

TRUE

If either expression is Null, then Null is returned.

Binary Equivalence

If the two expressions are Integer, then a binary equivalence is performed, returning an Integer result. All other numeric types (including Empty variants) are converted to Long and a binary equivalence is then performed, returning a Long result.

Binary equivalence forms a new value based on a bit-by-bit comparison of the binary representations of the two expressions, according to the following table:

1

Eqv

1

=

1

Example

0

Eqv

1

=

0

5 01101001

1

Eqv

0

=

0

6 10101010

0

Eqv

0

=

1

Eqv 00101000

Example

This example assigns False to A, performs some equivalent operations, and displays a dialog box with the result. Since A is equivalent to False, and False is equivalent to 0, and by definition,
A = 0, then the dialog box will display "A is False."

Sub Main()
  a = False
  If ((a Eqv False) And (False Eqv 0) And (a = 0)) Then
    MsgBox "a is False."
  Else
    MsgBox "a is True."
  End If
End Sub

See Also

Operator Precedence (topic); Or (operator); Xor (operator); Imp (operator); And (operator).

E