forum.alglib.net

Hi! I'm new to alglib, but I liked very much it's style and I would like to use it in my research.
I tried to use rmatrixlu from c++ version, (last release: 2.6.0), and the decomposition worked well, but the compacted permutation matrix came wrong all the times. Something like (for a matrix 6x6): [5 5 3 5 5 5]. The way I understood this format, it could not have repeated values.
Did some one have the same problem? Is possible I'm doing something wrong?

No, it's alright with function. From its documentation:


[5 5 3 5 5 5] is a sequence of elementary permutations: 0th with 5th, 1st with 5th, 2nd with 3rd, 3rd with 5th. 4th with 5th, 5th with 5th.

Sorry for my mystake, I'm used to other format.
Thanks a lot! It helped very much!