VMS Help TCPIP Services, Programming Interfaces, RPC XDR Routines, xdr_u_hyper  *Conan The Librarian (sorry for the slow response - running on an old VAX)

    Serializes and deserializes unsigned VAX quadwords (known in XDR
    as hyper-integers).
    Format
      #include  <tcpip$rpcxdr.h>
      bool_t  xdr_u_hyper(XDR *xdrs, unsigned quad *uhp);

  Additional Information (explode) :

• Arguments
• Description
• Return Values