Module DIR in SLATEC

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

DIR

 
Preconditioned Iterative Refinement Sparse Ax = b Solver. Routine to solve a
general linear system Ax = b using iterative refinement with a matrix splitting.
(SLAP Package).
 
Classes  :  D2a4 . Solution of systems of linear equations, including matrix
                 inverses, and LU and related factorizations (real
                 nonsymmetric sparse matrices)
            D2b4 . Solution of systems of linear equations, including matrix
                 inverses, and LU and related factorizations (real symmetric
                 sparse matrices)
 
Type     : Fortran subroutine in SLATEC library.
Access   : Public domain. Portable.
Precision: Double.
 
Usage    : CALL DIR (N, B, X, NELT, IA, JA, A, ISYM, MATVEC, MSOLVE, ITOL, TOL,
           ITMAX, ITER, ERR, IERR, IUNIT, R, Z, DZ, RWORK, IWORK)
 
See also : DSJAC, DSGS
 
Details  : Documentation Fullsource Source
Sites    : (1) ARNO (2) ITL
 

Implementation of DIR 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: SIR)
 
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 DIR from SLATEC on ITL

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