Module: svIntegratorRKF45

RKF45 integrator. It implements the method integrate() to advance one simulation time step, but can scale intermediate time steps according to the current relative error and the module’s relative tolerance.

The module PDF Description contains further information on this module’s function, how to run it, as well as testing.

The default absTol value is 1e-8, while the default relTol is 1e-4.

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class svIntegratorRKF45 : public StateVecIntegrator

#include <svIntegratorRKF45.h>

4th order Runge-Kutta-Fehlberg variable time step integrator

Public Functions

svIntegratorRKF45(DynamicObject *dyn)

class method

virtual ~svIntegratorRKF45()

virtual void integrate(double currentTime, double timeStep)

class method

Public Members

double alphaMatrix[6]

matrix of coefficients for time steps

double betaMatrix[6][5]

matrix of coefficients for state steps

double chMatrix[6]

matrix of coefficients for the result

double ctMatrix[6]

matrix of coefficients for the error

double kMatrix[6]

matrix of the k coefficients

double absTol

absolute tolerance

double relTol

relative tolerance