VMS Help FORTRAN, Intrinsic Procedures, MAX0  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  MAX0 (number, number, ...)

  A function that returns the greatest of the values specified in the
  argument list.
  +------+---------+----------+------------+-------------+
  | Args | Generic | Specific |  Argument  | Result Type |
  +------+---------+----------+------------+-------------+
  |  n   | MAX0    | IMAX0    | INTEGER*2  | INTEGER*2   |
  |      |         | JMAX0    | INTEGER*4  | INTEGER*4   |
  +------+---------+----------+------------+-------------+
  See also the MAX intrinsic function.