Module DGLSS in SLATEC

• SLATEC Information

• Components
  • Documentation from ITL
  • Fullsource from ITL
  • Source from ITL

DGLSS

 
Solve a linear least squares problems by performing a QR factorization of the
input matrix using Householder transformations. Emphasis is put on detecting
possible rank deficiency. Easy-to-use driver for DLLSIA and DULSIA.
 
Classes  :  D9a1 . Least squares (L-2) solution of singular, overdetermined or
                 underdetermined systems of linear equations without
                 constraints
 
Type     : Fortran subroutine in SLATEC library.
Access   : Public domain. Portable.
Precision: Double.
 
Usage    : CALL DGLSS (A, MDA, M, N, B, MDB, NB, RNORM, WORK, LW, IWORK, LIW, INFO)
 
Details  : Documentation Fullsource Source
Sites    : (1) ARNO (2) ITL
 

Implementation of DGLSS from SLATEC on ARNO

 
ARNO:      Silicon Graphics Origin 2000, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double. (Single: SGLSS)
 
Those logged in to arno.nist.gov or amur.nist.gov may access this module as
follows.
 
   Link         : f77 -o prog prog.f -lslatec
 

Implementation of DGLSS from SLATEC on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double. (Single: SGLSS)
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Link         : f77 -o example example.f -lslatec
   Documentation: slatecdoc dglss
   Source       : slatecsrc DGLSS
   Fullsource   : slatecsrcx dglss