function [ret,x0,str,ts,xts]=enzyme1(t,x,u,flag);
%ENZYME1	is the M-file description of the SIMULINK system named ENZYME1.
%	The block-diagram can be displayed by typing: ENZYME1.
%
%	SYS=ENZYME1(T,X,U,FLAG) returns depending on FLAG certain
%	system values given time point, T, current state vector, X,
%	and input vector, U.
%	FLAG is used to indicate the type of output to be returned in SYS.
%
%	Setting FLAG=1 causes ENZYME1 to return state derivatives, FLAG=2
%	discrete states, FLAG=3 system outputs and FLAG=4 next sample
%	time. For more information and other options see SFUNC.
%
%	Calling ENZYME1 with a FLAG of zero:
%	[SIZES]=ENZYME1([],[],[],0),  returns a vector, SIZES, which
%	contains the sizes of the state vector and other parameters.
%		SIZES(1) number of states
%		SIZES(2) number of discrete states
%		SIZES(3) number of outputs
%		SIZES(4) number of inputs
%		SIZES(5) number of roots (currently unsupported)
%		SIZES(6) direct feedthrough flag
%		SIZES(7) number of sample times
%
%	For the definition of other parameters in SIZES, see SFUNC.
%	See also, TRIM, LINMOD, LINSIM, EULER, RK23, RK45, ADAMS, GEAR.

% Note: This M-file is only used for saving graphical information;
%       after the model is loaded into memory an internal model
%       representation is used.

% the system will take on the name of this mfile:
sys = mfilename;
new_system(sys)
simver(1.3)
if (0 == (nargin + nargout))
     set_param(sys,'Location',[4,42,788,479])
     open_system(sys)
end;
set_param(sys,'algorithm',     'Adams/Gear')
set_param(sys,'Start time',    '0.0')
set_param(sys,'Stop time',     '16000')
set_param(sys,'Min step size', '0.001')
set_param(sys,'Max step size', '0.2')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')
set_param(sys,'AssignWideVectorLines','on');

add_block('built-in/To Workspace',[sys,'/','To Workspace1'])
set_param([sys,'/','To Workspace1'],...
		'ForeGround',4,...
		'mat-name','gamma',...
		'buffer','[8000,1,1]',...
		'position',[595,212,645,228])

add_block('built-in/Integrator',[sys,'/','gamma'])
set_param([sys,'/','gamma'],...
		'ForeGround',4,...
		'move name',0,...
		'Drop Shadow',4,...
		'position',[465,210,485,230])

add_block('built-in/To Workspace',[sys,'/','To Workspace'])
set_param([sys,'/','To Workspace'],...
		'ForeGround',2,...
		'mat-name','alpha',...
		'buffer','[8000,1,1]',...
		'position',[590,137,640,153])

add_block('built-in/Integrator',[sys,'/','alpha'])
set_param([sys,'/','alpha'],...
		'ForeGround',2,...
		'move name',0,...
		'Drop Shadow',4,...
		'position',[460,135,480,155])

add_block('built-in/Sum',[sys,'/','Sum'])
set_param([sys,'/','Sum'],...
		'ForeGround',2,...
		'inputs','++-',...
		'position',[365,107,385,143])

add_block('built-in/Fcn',[sys,'/','Sigma-i*Fn'])
set_param([sys,'/','Sigma-i*Fn'],...
		'orientation',2,...
		'ForeGround',3,...
		'Expr','1.3*u^4/(10^4+u^4)',...
		'position',[455,45,495,65])

add_block('built-in/Sum',[sys,'/','Sum1'])
set_param([sys,'/','Sum1'],...
		'ForeGround',4,...
		'inputs','+--',...
		'position',[365,217,385,253])

add_block('built-in/Gain',[sys,'/','ks'])
set_param([sys,'/','ks'],...
		'ForeGround',4,...
		'Gain','.06',...
		'position',[195,222,220,248])

add_block('built-in/To Workspace',[sys,'/','To Workspace2'])
set_param([sys,'/','To Workspace2'],...
		'BackGround',7,...
		'mat-name','v',...
		'buffer','[8000,1,1]',...
		'position',[595,7,645,23])

add_block('built-in/Scope',[sys,'/','alpha_scope'])
set_param([sys,'/','alpha_scope'],...
		'Vgain','120.000000',...
		'Hgain','1000.000000',...
		'Vmax','240.000000',...
		'Hmax','2000.000000',...
		'Window',[667,492,787,595])
open_system([sys,'/','alpha_scope'])
set_param([sys,'/','alpha_scope'],...
		'position',[700,95,730,125])

add_block('built-in/Scope',[sys,'/','gamma_scope'])
set_param([sys,'/','gamma_scope'],...
		'Vgain','400.000000',...
		'Hgain','1000.000000',...
		'Vmax','800.000000',...
		'Hmax','2000.000000',...
		'Window',[532,493,660,595])
open_system([sys,'/','gamma_scope'])
set_param([sys,'/','gamma_scope'],...
		'position',[705,240,735,270])

add_block('built-in/Gain',[sys,'/','SigmaM'])
set_param([sys,'/','SigmaM'],...
		'orientation',2,...
		'ForeGround',6,...
		'Gain','10.',...
		'position',[390,322,415,348])

add_block('built-in/Gain',[sys,'/','q'])
set_param([sys,'/','q'],...
		'orientation',2,...
		'ForeGround',6,...
		'position',[345,277,370,303])


%     Subsystem  'Phi'.

new_system([sys,'/','Phi'])
set_param([sys,'/','Phi'],'Location',[-5,363,600,603])

add_block('built-in/Product',[sys,'/','Phi/Product1'])
set_param([sys,'/','Phi/Product1'],...
		'inputs','3',...
		'position',[445,57,475,93])

add_block('built-in/Product',[sys,'/','Phi/Phi'])
set_param([sys,'/','Phi/Phi'],...
		'ForeGround',6,...
		'position',[535,108,565,132])

add_block('built-in/Fcn',[sys,'/','Phi/Fcn3'])
set_param([sys,'/','Phi/Fcn3'],...
		'Expr','1/u',...
		'position',[445,145,485,165])

add_block('built-in/Constant',[sys,'/','Phi/L'])
set_param([sys,'/','Phi/L'],...
		'Value','5000000',...
		'position',[285,175,305,195])

add_block('built-in/Sum',[sys,'/','Phi/Sum2'])
set_param([sys,'/','Phi/Sum2'],...
		'inputs','+++',...
		'position',[350,97,370,133])

add_block('built-in/Fcn',[sys,'/','Phi/Fcn2'])
set_param([sys,'/','Phi/Fcn2'],...
		'Expr','u*u',...
		'position',[255,125,295,145])

add_block('built-in/Fcn',[sys,'/','Phi/Fcn1'])
set_param([sys,'/','Phi/Fcn1'],...
		'Expr','u*u',...
		'position',[255,70,295,90])

add_block('built-in/Constant',[sys,'/','Phi/One'])
set_param([sys,'/','Phi/One'],...
		'position',[55,105,75,125])

add_block('built-in/Sum',[sys,'/','Phi/1+gamma'])
set_param([sys,'/','Phi/1+gamma'],...
		'position',[150,135,170,155])

add_block('built-in/Sum',[sys,'/','Phi/1+alpha'])
set_param([sys,'/','Phi/1+alpha'],...
		'position',[150,80,170,100])

add_block('built-in/Inport',[sys,'/','Phi/in_1'])
set_param([sys,'/','Phi/in_1'],...
		'position',[95,30,115,50])

add_block('built-in/Outport',[sys,'/','Phi/out_1'])
set_param([sys,'/','Phi/out_1'],...
		'position',[585,110,605,130])