Topic       : The GFA-Basic Compendium
Author      : GFA Systemtechnik GmbH
Version     : GFABasic.HYP v2.98 (12/31/2023)
Subject     : Documentation/Programming
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View Ref-Filex EQV y

x, y: iexp

The operator EQV (Equivalence) produces a TRUE result only if the arguments are
both TRUE or both FALSE. EQV works at the bit level and sets the bits which are
same in both arguments. This is exactly the opposite of XOR, so x EQV y is the
same as NOT (x XOR y).

    x | y | x EQV y
    --|---|--------
    T | T | T
    T | F | F
    F | T | F
    F | F | T

Example:

    PRINT TRUE EQV FALSE
    PRINT FALSE EQV FALSE

--> On the screen the numbers 0 and -1 appear.

    x=3
    y=10
    PRINT BIN$(x,4)
    PRINT BIN$(y,4)
    PRINT BIN$(x EQV y,4)

--> Displays 0011, 1011, and 0110 on the screen.