function [port_bonds, status] = abg2cbg(system_name, system_type, full_name,
					port_bonds,
					port_bond_direction,
					port_status,
					derivative_causality,
					typefile, infofile, errorfile)

# abg2cbg - acausal to causal bg conversion
#
#     ###################################### 
#     ##### Model Transformation Tools #####
#     ######################################
# 
# Matlab function  abg2cbg.m
# Acausal bond graph to causal bond graph: mfile format
# [bonds,status] = abg2cbg(system_name, system_type, full_name, port_bonds, infofile)

# ###############################################################
# ## Version control history
# ###############################################################
# ## $Id$
# ## $Log$
# ## Revision 1.42  1998/12/03 14:55:40  peterg
# ## Now uses number of components with complete causality to measure
# ## progress of algorithm -- Done.
# ## This replaces bond count -- done.
# ##
# ## Revision 1.41  1998/11/20 10:52:28  peterg
# ## Copies port bonds if the port bonds ARE set
# ## -- replaces Copies port bonds if the component bonds are NOT set
# ##
# ## Revision 1.40  1998/09/02 11:47:09  peterg
# ## Now uses explicit ordered list of ports instead of port.index.
# ## Note that subsystems are still treated in arbitrary order.

		  eval([ "[comp_bonds] = ", cause_name, "(comp_bonds);" ]); # Evaluate the built-in causality procedure

		  comp_bonds = comp_bonds.*(port_bond_direction*[1 1]);	# and convert from component orientated to arrow orientated causality
            	end;
		
	    	[comp_bonds,subsystem.status] = abg2cbg(name, subsystem.type, full_name, 
							comp_bonds, port_bond_direction, port_status, ...
							derivative_causality, ...
						    	typefile, infofile, errorfile);
				#	# Create a single status from the status vector s
				#	    if max(abs(s)) == 0 # Causal
				#	      status(i) = 0;
				#	    else
				#	      if max(s) == 1 # At least one component is overcausal
				#	    	status(i) = 1;

    	[name,prefered] = getdynamic(ABG_field) # Set causality of a C or I which is not already set
    	if prefered==0
	  ci_index=0;
    	else
	  disp("Set causality of a C or I which is not already set")
	  eval(["ci_bond_index = ABG.",field,".",name,".connections;"]); # Get bonds
	  ci_direction = sign(ci_bond_index);
	  ci_bond_index = abs(ci_bond_index);
	  if derivative_causality
	    prefered = -prefered;
	  end;
	  ABG.bonds(ci_bond_index,1:2) = prefered*ci_direction'*[1 1]
	  eval(["ABG.subsystems.",name,".status=0"]); #set status of the C or I
    	endif
      endwhile			# ( ci_index>0)
      eval(["ABG.",field," = ABG_field;"]); # Copy back to actual structure
    endif			# struct_contains(CBG,field(i,:));
  endfor