Integrate a system of ODEs via external Xptr.

CALL_INTEGRATE_STEM_ODE(init, start, end, step_size, stem_ode_ptr)

Arguments

init

initial condition

start

time at left endpoint of interval

end

time at right endpoint

step_size

set automatically by caller, required argument not specified by user

stem_ode_ptr

external pointer for calling the ODE integrator