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ode solvers v1.07

From: Marc Compere
Subject: ode solvers v1.07
Date: Mon, 15 May 2000 12:24:19 -0500

Octave users,

        The latest and greatest versions of 6 Ordinary Differential Equation
(ODE) solvers have been posted to the octave-sources mailing list.  This
is Copyrighted & licensed software (GPL) designed for use with Octave. 
They are also available and being maintained at

        The archive octave_ode_solvers_v1.07.tar.gz contains 6 single-step
Runge-Kutta ODE solvers along with 2 files demonstrating example uses of
each solver:

   - ode23.m    : variable step, 2nd-3rd order
   - ode45.m    : variable step, 4th-5th order
   - ode78.m    : variable step, 7th-8th order

   - rk2fixed.m : fixed step, 2nd order
   - rk4fixed.m : fixed step, 4th order
   - rk8fixed.m : fixed step, 8th order

   - pendulum.m : a sample m-file script that runs all solvers
   - penddot.m  : derivative function file, returning dy/dt for a simple

        None of these solvers are designed to work with stiff systems, however,
the fortran code sdirk4.f is a stiff ODE solver written by E. Hairer and
arranged for use within Octave by Marc Compere.  More infomation is
available at

Best regards,
Marc Compere

Marc Compere, The University of Texas at Austin
e-mail: address@hidden
www   :
office: ETC 4.134a, (512) 471-7347

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