chpgvx(3) on Linux
The text a76a2d4b99c5, as Debian 3.0 (Woody) shipped it.
compute selected eigenvalues and, optionally, eigenvectors of a complex generalized Hermitian-definite eigenproblem, of the form A*x=(lambda)*B*x, A*Bx=(lambda)*x, or B*A*x=(lambda)*x