    The books in this directory define a refinement proof correlating
    a concurrent deque implementation to a simple deque specification.

    The refinement proof is broken into the following chain:

         cdeq <-> cdeq+ <-> intr <-> intr+ >> spec

    Gzipped tar file: cdeq.tar.gz

    BOOK descriptions
    -----------------
    records.lisp     -- defines record operations and theorems
    cdeq-defs.lisp   -- defines the step functions and several supporting lemmas
     -- presents proof that cdeq and cdeq+ are equivalent
     -- presents proof that cdeq+ and intr are equivalent
     -- presents proof that intr and intr+ are equivalent
     -- presents proof that intr+ is a refinement of spec

    To build the books in this directory (in the correct order), perform the
    following commands, or else just type make on a Unix or Linux
    system if this directory is installed in a copy of the ACL2 distribution, under
    books/workshops/2000/sumners1/cdeq/.

    <shell> ACL2
    <lisp>  (lp)
    ACL2 !> (ld "make.lsp")

       -Rob Sumners
        robert.sumners@amd.com