 <p>Your best bet appears to be 'CEESITST', as it appears to exist in z/OS COBOL. I found an example using that as well as the other bit manipulation programs.</p> <p><a href="http://esj.com/articles/2000/09/01/callable-service-manipulating-binary-data-at-the-bit-level.aspx" rel="nofollow">http://esj.com/articles/2000/09/01/callable-service-manipulating-binary-data-at-the-bit-level.aspx</a></p>