Gilles Sadowski a écrit : > Hello. > > Would you consider transferring the contents of the Mantissa "algebra" > package to Commons-Math?
The orthogonal polynomials would be a nice addition. The current implementation in Mantissa does not look good to me, after a few years. The two internal classes Polynomial.Double and Polynomial.RationalNumber, which are mimicked after the java.awt.geom.Point2D class and its two Point2D.Double and Point2D.Float classes seems clumsy now. If we consider preserving two classes, one for double and another one for computation, I wonder if we should not split them in parallel but unrelated classes, just like RealMatrix and BigMatrix. We could add the class with exact computation afterwards too, only if really needed. I also wonder if dedicated classes are needed. Mantissa provides one abstract base class OrhtogonalPolynomial and one class for each type (Chebyshev, Legendre, Laguerre, Hermite). Could we simply use the existing polynomials class and add a utility class PolynomialsUtils with factory methods createXxxPolynomial() ? This utility class would cache already computed coefficients as exact Fraction instances and create the polynomials by converting the Fraction to simple double arrays at construction time. Any thoughts ? Luc > > Thanks, > Gilles > > --------------------------------------------------------------------- > To unsubscribe, e-mail: [email protected] > For additional commands, e-mail: [email protected] > > --------------------------------------------------------------------- To unsubscribe, e-mail: [email protected] For additional commands, e-mail: [email protected]
