source: branches/newlanguage/sample/miscellaneous/sample_if.mso @ 125

#*-------------------------------------------------------------------
* EMSO Model Library (EML) Copyright (C) 2004 - 2007 ALSOC.
*
* This LIBRARY is free software; you can distribute it and/or modify
* it under the therms of the ALSOC FREE LICENSE as available at
* http://www.enq.ufrgs.br/alsoc.
*
* EMSO Copyright (C) 2004 - 2007 ALSOC, original code
* from http://www.rps.eng.br Copyright (C) 2002-2004.
* All rights reserved.
*
* EMSO is distributed under the therms of the ALSOC LICENSE as
* available at http://www.enq.ufrgs.br/alsoc.
*
*--------------------------------------------------------------------
* FlowSheet showing how to use the 'if' conditional.
*--------------------------------------------------------------------
* Author: Rafael de Pelegrini Soares
* $Id: sample_if.mso 125 2007-01-22 19:57:16Z rafael $
*--------------------------------------------------------------------*#

FlowSheet TestIF
        VARIABLES
        y as Real(Lower = -2);
        x as Real;
        z as Real;

        EQUATIONS
        if x < 1 then
                diff(y) = 1 / "s";
                z = 3;
        else
                diff(y) = - 1 / "s";
                if y < 1 then
                        z = x + y;
                else
                        z = 10;
                end             
        end
        
        diff(x) = y / "s";

        INITIAL
        x = 0;
        y = 0;
        
        OPTIONS
        TimeStep = 0.1;
        TimeEnd = 10.0;
        TimeUnit = "s";
end