Install libqrupdate1 by entering the following commands in the terminal:
sudo apt update sudo apt install libqrupdate1
Description:
Fast updates of QR and Cholesky decompositions
qrupdate is a Fortran library for QR and Cholesky decompositions. It is most notably used by Octave. . This package contains the shared library.
Homepage: http://qrupdate.sf.net
Version: 1.1.2-2build1
Section: universe/libs