Re: [numbers] JTransforms and commons-math

2017-01-14 Thread Gilles
On Sat, 14 Jan 2017 16:34:24 +0100, Eric Barnhill wrote: Do you know which methods, and why (precision and/or performance)? I can look at the code this week, alternatively I could contact the developer. It's "sin" and "cos". Our CM-internal micro-benchmark indeed showed better performance, at

Re: [numbers] JTransforms and commons-math

2017-01-14 Thread Eric Barnhill
Do you know which methods, and why (precision and/or performance)? I can look at the code this week, alternatively I could contact the developer. On the other hand we will need an FFT going forward, >> > As for similar issues (cf TEXT), "SigProc" can define custom interfaces > and bridge(s). >

Re: [numbers] JTransforms and commons-math

2017-01-14 Thread Gilles
Hi. On Sat, 14 Jan 2017 11:07:12 +0100, Eric Barnhill wrote: On the subject of FFT and other transforms, I went to take another look at the JTransforms code, which is AFAIK the premiere transforms package for Java (even outperforming FFTW) and which I myself use over Commons. It is now on Git

[numbers] JTransforms and commons-math

2017-01-14 Thread Eric Barnhill
On the subject of FFT and other transforms, I went to take another look at the JTransforms code, which is AFAIK the premiere transforms package for Java (even outperforming FFTW) and which I myself use over Commons. It is now on GitHub so it was easy to browse the source code. It is in pure Java a