https://uk.mathworks.com/help/fixedpoint/ug/perform-qr-factorization-using-cordic.html
Perform QR Factorization Using CORDIC - MATLAB & Simulink
This example shows how to write MATLAB code that works for both floating-point and fixed-point data types.
qr factorizationperformusingcordicmatlab
https://www.netlib.org/lapack/lug/node69.html
QR Factorization
qrfactorization
https://help.scilab.org/docs/2024.1.0/ru_RU/rankqr.html
rankqr - Rank revealing QR factorization
rankrevealingqrfactorization