cgbbrd(3) on Linux
The text 194803fb5a47, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
reduce a complex general m-by-n band matrix A to real upper bidiagonal form B by a unitary transformation
The text 194803fb5a47, as Debian 2.2 (Potato), Debian 2.1 (Slink), Debian 2.0 (Hamm) shipped it.
reduce a complex general m-by-n band matrix A to real upper bidiagonal form B by a unitary transformation