Re: Could we have a roots() method in PolynomilFunction class?

2014-07-03 Thread Axel
Ok, but what about my main question: Could we have a roots() method in PolynomialFunction class? Which in the first step delegates to LaguerreSolver#solveAllComplex()? On Sat, Jun 28, 2014 at 8:26 PM, Ted Dunning ted.dunn...@gmail.com wrote: That is one article, but it doesn't actually compare

Re: Could we have a roots() method in PolynomilFunction class?

2014-07-03 Thread Gilles
On Thu, 3 Jul 2014 18:14:41 +0200, Axel wrote: Ok, but what about my main question: Could we have a roots() method in PolynomialFunction class? Which in the first step delegates to LaguerreSolver#solveAllComplex()? I guess that people want to be careful before changing the API of

Re: Could we have a roots() method in PolynomilFunction class?

2014-07-03 Thread Phil Steitz
On Jul 3, 2014, at 2:30 PM, Gilles gil...@harfang.homelinux.org wrote: On Thu, 3 Jul 2014 18:14:41 +0200, Axel wrote: Ok, but what about my main question: Could we have a roots() method in PolynomialFunction class? Which in the first step delegates to LaguerreSolver#solveAllComplex()?

Re: Could we have a roots() method in PolynomilFunction class?

2014-06-28 Thread Axel
On Fri, Jun 27, 2014 at 10:56 PM, Thomas Neidhart thomas.neidh...@gmail.com wrote: ... I did take a look at the stackoverflow question, and there is already a way to do this in Commons Math using the LaguerreSolver via the solveComplex and solveAllComplex methods. But it might be good to

Re: Could we have a roots() method in PolynomilFunction class?

2014-06-28 Thread Ted Dunning
That is one article, but it doesn't actually compare the numerical stability or efficiency of this method. It just invokes the stability of numerical linear algebra. Whether this is a good way to compute roots is an open question. The other major question here is operation count. Computing

Could we have a roots() method in PolynomilFunction class?

2014-06-27 Thread Axel
Hello Jira seems to be down? So I'm trying here to post my request for an enhancement: Could we have a roots() method in PolynomialFunction class? For example I ported the code in this stackoverflow question to apache commons math by using the EigenDecomposition class:

Re: Could we have a roots() method in PolynomilFunction class?

2014-06-27 Thread Thomas Neidhart
On 06/27/2014 04:24 PM, Axel wrote: Hello Jira seems to be down? So I'm trying here to post my request for an enhancement: Could we have a roots() method in PolynomialFunction class? For example I ported the code in this stackoverflow question to apache commons math by using the