CBL_XOR

Syntax:

call "CBL_XOR" using    source
                        target
               by value length

Parameters:

	Using call prototype (see Key)	Picture
`source`	cblt-x1-compx	Any data item.
`target`	cblt-x1-compx	Any data item.
`length`	cblt-os-size	Numeric literal or pic x(4) comp-5.

On Entry:

`source`	One of the data items to exclusive-OR.
`target`	The other data item to exclusive-OR.
`length`	The number of bytes of `source` and `target` to exclusive-OR. Positions in `target` beyond this are unchanged.

On Exit:

target

The result.

Comments:

The routine starts at the left-hand end of source and target and exclusive-ORs the bits together, storing the result in target. The truth table for this is:

`source`	`target`	result
0	0	0
0	1	1
1	0	1
1	1	0