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Diffstat (limited to 'testsuite/vests/vhdl-ams/ad-hoc/fromUC/free_equations/2nd_order_ode.ams')
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diff --git a/testsuite/vests/vhdl-ams/ad-hoc/fromUC/free_equations/2nd_order_ode.ams b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/free_equations/2nd_order_ode.ams new file mode 100644 index 000000000..88b5c9aae --- /dev/null +++ b/testsuite/vests/vhdl-ams/ad-hoc/fromUC/free_equations/2nd_order_ode.ams @@ -0,0 +1,47 @@ + +-- Copyright (C) 2000-2002 The University of Cincinnati. +-- All rights reserved. + +-- This file is part of VESTs (Vhdl tESTs). + +-- UC MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF THE +-- SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE +-- IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, +-- OR NON-INFRINGEMENT. UC SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY +-- LICENSEE AS A RESULT OF USING, RESULT OF USING, MODIFYING OR +-- DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. + +-- By using or copying this Software, Licensee agrees to abide by the +-- intellectual property laws, and all other applicable laws of the U.S., +-- and the terms of this license. + +-- You may modify, distribute, and use the software contained in this +-- package under the terms of the "GNU GENERAL PUBLIC LICENSE" version 2, +-- 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 +-- along with VESTs; if not, write to the Free Software Foundation, +-- Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + +-- --------------------------------------------------------------------- +-- +-- $Id: 2nd_order_ode.ams,v 1.1 2002-03-27 22:11:17 paw Exp $ +-- $Revision: 1.1 $ +-- +-- --------------------------------------------------------------------- + +entity VanDerPol is + generic (m: real := 1.0); +end entity VanDerPol; + +architecture SecondOrderODE of VanDerPol is +quantity x:real; +begin + -- the break statement sets the initial conditions + break x => 0.0, x'dot => 0.1; + + -- second-order Van Der Pol ODE + x'dot'dot == -x -m*(x*x - 1.0)*x'dot; +end architecture SecondOrderODE; + |