Miguel Angel Salazar de Troya <salazardetr...@gmail.com> writes: > Sorry I should have been more specific. I was talking about the explicit > Runge-Kutta method.
It is currently only diagnostic. I think it applies to RK3BS and RK5DP and I suppose by "implemented", you mean "has the method been optimized to take advantage of the property?". The answer to that question is not yet, but it's subtle in case the user changes the state or function as part of a pre/post stage/step function. We have a similar problem with explicit stages in diagonally implicit RK methods for DAE.
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