call "CBL_AND" using    source
               by value length


  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 AND.
target The other data item to AND.
length The number of bytes of source and target to AND. Positions in target beyond this are unchanged.

On Exit:

target The result.


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

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