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: