VMS Help POSIX Threads, PTHREAD routines, pthread_exc_matches_np, Description  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    This routine compares two exception objects, taking into
    consideration whether each is an address exception or status
    exception.

    This routine returns either the C language value TRUE or the
    C language value FALSE, indicating whether the two exception
    objects specified in the arguments exception1 and exception2 are
    identical.