Module DLQRRR in IMSLM

General Information

Compute the QR decomposition using Householder transformations.

Usage

CALL DLQRRR (NRA, NCA, A, LDA, PIVOT, IPVT, QR, LDQR, QRAUX, CONORM)

Classification

D5	QR decomposition, Gram-Schmidt orthogonalization

Type

subroutine in IMSLM package

Language

Fortran

Availability

Proprietary, Portable

Precision

Double Precision

Alternates

LQRRR

Single Precision

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.

Documentation

cat /home/fetch/Subjects/Math-Stat-Software/imsl/Documentation/dlqrrr

Example

cat /home/fetch/Subjects/Math-Stat-Software/imsl/Examples/dlqrrr

To Link

Login to spruce.nist.gov and see ITL How-To for information on how to setup your environment and link.