anchor.diff:  c         0:  No error
   c         1:  Error opening input file (no exception should be raised
   c             in this case since a differential force file is optional)
  -c         2:  Units not specified (not yet used for this routine)
   c         3:  Read error
   c
         include "implicit.inc"
   c
  +c...  parameter definitions
  +c
  +      include "ndimens.inc"
  +      include "nconsts.inc"
  +c
   c...  subroutine arguments
   c
  -      integer ndof,numslp,numdif,kr,ierr
  -      character difile*(*)
  +      integer numslp,numdif,kr,ierr
  +      character difile*(*),errstrng*(*)
   c
   c...  local variables
   c
  
positive.code: c~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  c
  c
        subroutine scan_diff(ndof,numslp,numdif,kr,ierr,difile)
  c
  c...  subroutine to perform an initial scan of the slippery node
  c     differential forces input file to determine the number of
  
negative.code: c...  read error
  c
   30   continue
          close(kr)
          ierr=3
          errstrng="scan_diff"
          return
  c
        end
  c
  c version
  c $Id: scan_diff.f,v 1.2 2004/07/12 19:47:26 willic3 Exp $
  c
  c Generated automatically by Fortran77Mill on Wed May 21 14:15:03 2003
  c
  