Hi, this question was raised while working on MATH-659, which I quote {quote} In rev1166533, I removed the call to this method in AdamsNordsieckTransformer.initializeHighOrderDerivatives(double, double[], double[][], double[][]). This raises one important question. All across the package o.a.c.m.ode, matrix variables are explicitely declared as Array2DRowRealMatrix (as opposed to RealMatrix). This leads to an ugly cast (see the end of the presently modified method). I was wondering how necessary that was. Would it be thinkable to use the most general supertype for all matrices? {quote} I should mention I have no knowledge at all about this package, so I do apologize if it is naive. Sébastien
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