zstegr(3) on Linux
The text 92e0528c578a, as Debian 3.1 (Sarge) shipped it.
compute selected eigenvalues and, optionally, eigenvectors of a real symmetric tridiagonal matrix T
The text 92e0528c578a, as Debian 3.1 (Sarge) shipped it.
compute selected eigenvalues and, optionally, eigenvectors of a real symmetric tridiagonal matrix T