* Runge-Kutta in Ada
@ 1999-06-17 0:00 Frank Oppenheimer
1999-06-17 0:00 ` Gautier
0 siblings, 1 reply; 2+ messages in thread
From: Frank Oppenheimer @ 1999-06-17 0:00 UTC (permalink / raw)
For modelling a continous physical system I am searching for a numeric package
including the Runge-Kutta method to solve differential equations. Since the
equations are oft second order it would be great to find a package that is
flexible enough to handle a vector of functions.
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: Runge-Kutta in Ada
1999-06-17 0:00 Runge-Kutta in Ada Frank Oppenheimer
@ 1999-06-17 0:00 ` Gautier
0 siblings, 0 replies; 2+ messages in thread
From: Gautier @ 1999-06-17 0:00 UTC (permalink / raw)
To: Frank Oppenheimer
> For modelling a continous physical system I am searching for a numeric package
> including the Runge-Kutta method to solve differential equations. Since the
> equations are oft second order it would be great to find a package that is
> flexible enough to handle a vector of functions.
There is a vectorial RK implementation in my math packages / programs
URL http://members.xoom.com/gdemont/gsoft.htm
arenstor.adb in:
http://members.xoom.com/gdemont/logiciel/mathprog.zip
uses packages from:
http://members.xoom.com/gdemont/logiciel/mathpaqs.zip
Methods implemented
type t_meth is
(Euler1, Runge_Kutta_class4, Runge_Kutta_3_8_4,
Butcher6, DoPriF7, DoPriF8,
DoPriV8 ); -- V: variable step size (F: fixed)
As you see there is even the Dormand-Prince 13 stages
variable step method...
--
Gautier
--------
http://members.xoom.com/gdemont/
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