Module DLQRRV in IMSLM

General Information

Compute the least-squares solution using Householder transformations applied in blocked form.

Usage

CALL DLQRRV (NRA, NCA, NUMEXC, A, LDA, X, LDX)

Classification

D9a1	Least squares (L-2) solution of singular, overdetermined or underdetermined systems of linear equations without constraints

Type

subroutine in IMSLM package

Language

Fortran

Availability

Proprietary, Portable

Precision

Double Precision

Alternates

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/dlqrrv
Example: cat /home/fetch/Subjects/Math-Stat-Software/imsl/Examples/dlqrrv
To Link: Login to spruce.nist.gov and see ITL How-To for information on how to setup your environment and link.