Truth Table for Logical Operators
 
Each operator returns results as indicated below. A "T" indicates a true
value and an "F" indicates a false value. Operators are listed in order of
operator precedence.
 
     Values of      Value Returned by Logical Operator
                           X    X    X     X     X
                     NOT  AND  OR   XOR   EQV   IMP
     X     Y          X    Y    Y    Y     Y     Y
     T     T          F    T    T    F     T     T
 
     T     F          F    F    T    T     F     F
 
     F     T          T    F    T    T     F     T
 
     F     F          T    F    F    F     T     T