Module ZUNGBR in LAPACK

General Information

Generates the unitary transformation matrices from a reduction to bidiagonal form determined by CGEBRD. (Computational routine.).

Usage

CALL CUNGBR( VECT, M, N, K, A, LDA, TAU, WORK, LWORK, INFO )

Classification

D6	Singular value decomposition (SVD)

Type

subroutine in LAPACK package (COMPLEX16 sublibrary)

Language

Fortran

Availability

Public domain, Portable

Precision

Double Precision

Alternates

CUNGBR

Single Precision

See also

CGEBRD

Download from NETLIB; Public access repository

Location

The University of Tennessee at Knoxville and Bell Laboratories

Contact

Jack Dongarra, ORNL (dongarra@cs.utk.edu) and Eric Grosse, Bell Labs (ehg@research.att.com)

Installation on ARNO; Silicon Graphics Origin 2000

Location

National Institute of Standards and Technology (NIST), Gaithersburg, MD.

Contact

Gaithersburg Consulting Office: 301-975-2968, consult@nist.gov

Usage

Those logged in to arno.nist.gov or amur.nist.gov may access this module as follows.

Documentation

man zungbr

To Link

f90 prog.f -lscs (or -lscs_mp for multiprocessor version)

Installation on ITL; Unix Workstation Network

Location

National Institute of Standards and Technology (NIST), Gaithersburg, MD.

Contact

Gaithersburg Consulting Office: 301-975-2968 (FTS 879-2968)

Usage

Access available only to NIST staff on internal Unix systems. They may access this package provided the /itl tree is cross-mounted.

NeededBLAS

Can be downloaded from netlib

To Link

f77 -o myprog myprog.f -llapack -lblas