Topic       : The GFA-Basic Compendium
Author      : GFA Systemtechnik GmbH
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View Ref-FileAND(x,y)
OR(x,y)
XOR(x,y)
IMP(x,y)
EQV(x,y)

x, y: iexp

These functions operate logically on two numerical expressions.

The function AND() returns a result in which only those bits are set which are
set in both x and y.

The result of OR() contains bits set in the places in which bits are set in
either x or y or both.

XOR() sets only those bits which are set in x or y but not both (or, to put it
another way: XOR() sets those bits which are different in x and y).

IMP() resets a bit to zero if the appropriate bit in x is set and in y is
reset, otherwise the bit is set.

EQV() sets a bit of the result if the appropriate bits in x and y are both set,
or both reset.

See the section on Logical Operators for the truth table for this function.

Examples:

    x=3
    y=2
    z=AND(x,y)
    PRINT z,OR(2,7),XOR(x,1+4+8)

--> On the screen, the numbers 2, 7, and 14 appear.

    PRINT BIN$(15,4),15
    PRINT BIN$(6,4),6
    PRINT BIN$(IMP(15,6),4),"IMP(15,6)"
    PRINT BIN$(EQV(15,6),4),"EQV(15,6)"

--> Displays: 1111 15
              0110 6
              0110 IMP(15,6)
              0110 EQV(15,6)