Module LSQR in LINALG

• LINALG Information

• Components
  • Fullsource from NETLIB

LSQR

 
Solves linear systems, linear least squares problems, and damped least squares
problems, for large sparse matrices. (See C.C. Paige and M.A. Saunders, ACM TOMS 8
(1982) pp. 43-71.).
 
Classes  :  D2a4 . Solution of systems of linear equations, including matrix
                 inverses, and LU and related factorizations (real
                 nonsymmetric sparse matrices)
            D9a1 . Least squares (L-2) solution of singular, overdetermined or
                 underdetermined systems of linear equations without
                 constraints
 
Type     : Fortran software in LINALG collection.
Access   : Some uses prohibited. Portable.
Precision: Double.
 
Usage    : CALL LSQR (M, N, APROD, DAMP, LENIW, LENRW, IW, RW, U, V, W, X, SE, ATOL,
           BTOL, CONLIM, ITNLIM, NOUT, ISTOP, ITN, ANORM, ACOND, RNORM,
           ARNORM, XNORM)
 
Details  : Fullsource
Sites    : (1) NETLIB
 

Implementation of LSQR from LINALG on NETLIB

 
NETLIB:    Public access repository, The University of Tennessee at
           Knoxville and Bell Laboratories
 
Precision: Double.
 
You may access components from NETLIB outside GAMS as follows.
 
   Fullsource   : echo 'send lsqr from linalg' | mail netlib@ornl.gov