Apply permutation matrix

[jgpallero]

Hi,
Exist any subroutine in lapack for apply a permutation matrix to another matrix without build and multiply the matrices explicitly? That is, for example, I can apply the permutation matrix of LU decomposition (IPIV from DGETRF) via DLASWP subroutine because IPIV is a representation of internal row interchanges. But, what about the JPVT vector from DGEQP3? For that I can't use DLSWP. Exist any function for apply this?

Thanks

[Julien Langou]

You can apply the column permutation of xGEQP3 with xSWAP.
For an example, please refer to the xGEQP3 itself.
Julien.