function  structure = ES_eqn(name,bond_number,bonds,direction,cr,args, ...
function  structure = FP_eqn(name,bond_number,bonds,direction,cr,args, ...
    structure,eqnfile);
% ES_eqn - equations for ES component
% FP_eqn - equations for FP component
% 
%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
%     %%%%% Model Transformation Tools %%%%%
%     %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% 
% Matlab function  ES_eqn
% ES_eqn(name,bond_number,bonds,direction,cr,args, ...
% Matlab function  FP_eqn
% FP_eqn(name,bond_number,bonds,direction,cr,args, ...
%    structure,eqnfile);



% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% Version control history
% %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% %% $Id$
% %% $Log$
% %% Revision 1.1  1998/06/29 09:53:22  peterg
% %% Initial revision
% %%
% %% Revision 1.3  1998/03/27 10:59:43  peterg
% %% Zapped t_0 again ...
% %%
% %% Revision 1.2  1998/02/25 16:59:56  peterg
% %% Corrected enthalpy-entropy conversion -- use temp on the entropy side.
% %%
% %% Revision 1.1  1998/02/25 15:03:51  peterg

if nargin<6
  eqnfile = 'stdout';
end;

% Check that there are exactly two bonds.
ports = 2;
if check_bonds(bonds,ports,'ES')==0
if check_bonds(bonds,ports,'FP')==0
  return
end


% There are 2 ports; extract the information
e_bond = bonds(1,:);
s_bond = bonds(2,:);