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-- All rights reserved. 

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-- June 1991. A copy of this license agreement can be found in the file
-- "COPYING", distributed with this archive.

-- You should have received a copy of the GNU General Public License
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-- ---------------------------------------------------------------------
--
-- $Id: test123.ams,v 1.1 2002-03-27 22:11:18 paw Exp $
-- $Revision: 1.1 $
--
-- ---------------------------------------------------------------------

----------------------------------------------------------------------
-- SIERRA REGRESSION TESTING MODEL
-- Develooped at:
-- Distriburted Processing Laboratory
-- University of Cincinnati
-- Cincinnati
----------------------------------------------------------------------
-- File          : test113.ams
-- Author(s)     : Geeta Balarkishnan(gbalakri@ececs.uc.edu)
-- Created       : May 2001
----------------------------------------------------------------------
-- Description :
----------------------------------------------------------------------
-- to check the correct implementation of the simultaneous if statement
-- break and 'above is also used. it checks for the eqns v'=g*v**2 for 
-- +g and -g.
----------------------------------------------------------------------
PACKAGE electricalSystem IS
    NATURE electrical IS real ACROSS real THROUGH;
    FUNCTION SIN(X : real) RETURN real;
--    alias ground is electrical'reference;
END PACKAGE electricalSystem;

use work.electricalsystem.all;
entity test is
end entity test;

architecture atest of test is

  quantity v : real;
  quantity s: real;
  constant g : real :=9.81;
  constant r : real:=1.02;

begin

break v=>0.0, s=>100.0;

break v=>-v when not s'above(0.0);

s'dot==v;

if v>0.0 use
   v'dot == -g+v*v*r;
else
   v'dot == -g-v*v*r;
end use;

end architecture atest;