function sys = mtt2sys (Name)

  ## usage:  sys = mtt2sys (Name)
  ##
  ## Creates a sys structure for the Octave Control Systems Toolbox
  ## from an MTT system with name "Name"
  ## Assumes that Name_sm.m and Name_struc.m exist

  ## Copyright (C) 2000 by Peter J Gawthrop

  if nargin<1
    error("missing system name, usage:  sys = mtt2sys (Name)");
  endif
  
  ## Function names
  numpar_name = sprintf("%s_numpar",Name);
  sm_name = sprintf("%s_sm",Name);
  struc_name = sprintf("%s_struc",Name);

  ## Check files exist
  if exist(numpar_name)!=2
    error("File %s.m does not exist: use <mtt %s numpar m> to create it",\
	  numpar_name,Name);
  endif

  if exist(sm_name)!=2
    error("File %s.m does not exist: use <mtt %s sm m> to create it",\
	  sm_name,Name);
  endif

  if exist(struc_name)!=2
    error("File %s.m does not exist: use <mtt %s struc m> to create it",\
	  struc_name,Name);
  endif
  
  eval(sprintf("par=%s_numpar;", Name)); # Parameters
  eval(sprintf("[A,B,C,D]=%s_sm(par);", Name)); # State matrices
  sys = ss2sys(A,B,C,D);	# Sys form
  eval(sprintf("[sys.inname,sys.outname,sys.stname]=%s_struc;", Name)); # Setup names
  
endfunction