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XOR.HDR
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1994-04-25
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/******************************************************************************
The Klipper Library, for CA-Clipper 5.x
Copyright (c), 1994, Wallace Information Systems Engineering
FUNCTION:
_XOR( nData, nKey ) --> nInteger
PARAMETERS:
nData : Binary Number to XOR with nKEY
nKey : Binary Number to XOR with nData
SHORT:
Perform a binary Exclusive OR with binary INTEGERS.
DESCRIPTION:
_XOR() performs a bitwise XOR or two binary numbers. The two numbers
are padded to the same number of positions (to a maximum of 8 digits)
before the operation takes place in order to retain positional values:
100101 XOR 101 becomes 100101 XOR 000101
NOTE:
EXAMPLE:
t = _XOR(1011,11)
original 1011 Both params are padded to eight places 00001010
key 11 00000011
--------
Result: 00001001
Result: t = 1001 (leading zeros ignored in RETURN())
******************************************************************************/