5th Order Runge-Kutta with adaptive stepsize.
5th Order Runge-Kutta with adaptive stepsize.

Implemented the Dormand-Prince Runge-Kutta 5th order ODE integrator from
Numerical recipes to replace the black-box scipy integrator. I will
consider implemented some others, but this one may provide the balance
between speed and accuracy that I need for the Earth Model time
integration.

skachuck/giapy,skachuck/giapy