<> > I thought Fortran-77 required constant actual parameters to be > "copied in" rather than passed by reference? FORTRAN parameters are always pass-by-reference. -- D Gary Grady Duke University Computation Center, Durham, NC 27706 (919) 684-4146 USENET: {decvax,ihnp4,akgua,etc.}!mcnc!ecsvax!dgary