Applies a block reflector or its transpose/conjugate-transpose as returned by p?tzrzf to a general matrix.
Applies (multiplies by) the conjugate transpose of an elementary reflector as returned by p?tzrzf to a general matrix.
Forms the triangular factor T of a block reflector H=I-V*T*VH as returned by p?tzrzf.
Multiplies a general rectangular matrix by a real scalar defined as
Initializes the offdiagonal elements of a matrix to alpha and the diagonal elements to beta.
Looks for a small subdiagonal element from the bottom of the matrix that it can safely set to zero.
Updates a sum of squares represented in scaled form.
Performs a series of row interchanges on a general rectangular matrix.
Computes the trace of a general square distributed matrix.
Computes selected eigenvalues and, optionally, eigenvectors of a generalized Hermitian definite eigenproblem with matrices in packed storage.