Module DSLUCN in SLATEC

• SLATEC Information

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

DSLUCN

 
Incomplete LU CG Sparse Ax=b Solver for Normal Equations. Routine to solve a
general linear system Ax = b using the incomplete LU decomposition with the
Conjugate Gradient method applied to the normal equations, viz., AA'y = b, x = A'y.
(SLAP Package).
 
Classes  :  D2a4 . Solution of systems of linear equations, including matrix
                 inverses, and LU and related factorizations (real
                 nonsymmetric sparse matrices)
 
Type     : Fortran subroutine in SLATEC library.
Access   : Public domain. Portable.
Precision: Double.
 
Usage    : CALL DSLUCN (N, B, X, NELT, IA, JA, A, ISYM, ITOL, TOL, ITMAX, ITER,
           ERR, IERR, IUNIT, RWORK, LENW, IWORK, LENIW)
 
See also : DCGN, SDCGN, DSILUS
 
Details  : Documentation Fullsource Source
Sites    : (1) ARNO (2) ITL
 

Implementation of DSLUCN 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: SSLUCN)
 
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 DSLUCN from SLATEC on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double. (Single: SSLUCN)
 
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 dslucn
   Source       : slatecsrc DSLUCN
   Fullsource   : slatecsrcx dslucn