Stepsize initialisers

__all__ = ['dt0', 'dt0_adaptive'] module-attribute

dt0(vf, initial_values: Sequence, /, scale=0.01, nugget=1e-05, **vf_kwargs)

Propose an initial time-step.

dt0_adaptive(vf, initial_values: Sequence, /, t0, *, error_contraction_rate, rtol, atol)

Propose an initial time-step as a function of the tolerances.