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From: Gautier <Gautier.deMontmollin@Maths.UniNe.CH>
Subject: Re: Runge-Kutta in Ada
Date: 1999/06/17
Message-ID: <3768E98D.E233B4A1@Maths.UniNe.CH>#1/1
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References: <3768DAA6.2CBF7F87@informatik.uni-oldenburg.de>
To: Frank Oppenheimer <frank.oppenheimer@informatik.uni-oldenburg.de>
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Newsgroups: comp.lang.ada
Date: 1999-06-17T00:00:00+00:00
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> 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/