subroutine magfld_arg( argc, argv )
!
!     Argument break-out for Unix IDL call_external calls of magfld.
!
!     B. Knapp, 1998-11-19, 2000-12-28
!
C
C     RCS DATA
C     
C     $Header$
C     
C     $Log$
C
C
      implicit none
      integer argc, argv(3)
      external magfld
!
      call magfld( %val(argv(1)), %val(argv(2)), %val(argv(3)) )
!
      return
      end