clals0(3) on Linux
The text 52f9a168ef16, as Debian 4.0 (Etch), Debian 3.1 (Sarge) shipped it.
applie back the multiplying factors of either the left or the right singular vector matrix of a diagonal matrix appended by a row to the right hand side matrix B in solving the least squares problem using the divide-and-conquer SVD approach