VMS Help FORTRAN, Intrinsic Procedures, AMAX0  *Conan The Librarian (sorry for the slow response - running on an old VAX)

  AMAX0 (number, number, ...)

  A function that returns the greatest of the values specified in the
  argument list.

  +------+---------+----------+------------+-------------+
  | Args | Generic | Specific |  Argument  | Result Type |
  +------+---------+----------+------------+-------------+
  |   n  | AMAX0   | AIMAX0   | INTEGER*2  | REAL*4      |
  |      |         | AJMAX0   | INTEGER*4  | REAL*4      |
  +------+---------+----------+------------+-------------+
  See also the MAX intrinsic function.