Hello, The complex QR decomposition is available in the git repository - we haven't made a release since it was added. The algorithm is the Level-3 BLAS method of Elmroth and Gustavson, so you need to supply the T matrix (instead of the tau vector) to the routine.
If you are willing/able to clone the git and install it, then the function you will need is: gsl_linalg_complex_QR_decomp_r(gsl_matrix_complex * A, gsl_matrix_complex * T) The other functions (solve, lssolve) follow the same calling format as the real versions (with the _r suffix). Pivoted QR is only available for real matrices at the moment. On 4/13/21 3:16 PM, Songting Luo wrote: > Hello GSL users and developers, > > Could you please let me know whether GSL has QR and pivoted QR for complex > matrices? I couldn't find them in the online manual. Thanks. > > -SL
