From QB64.org wiki
The EQV operator returns a value based on the equivalence of two conditions or values.
- result = firstValue EQV secondValue
- Returns true (-1) when both values are the same (equivalent).
- Turns a bit on if both bits are the same, turns a bit off if both bits are different.
Operands Operations A B NOT B A AND B A OR B A XOR B A EQV B A IMP B T T F T T F T T T F T F T T F F F T F F T T F T F F T F F F T T