Module DSMMI2 in SLATEC

• SLATEC Information

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

DSMMI2

 
SLAP Backsolve for LDU Factorization of Normal Equations. To solve a system of the
form (L*D*U)*(L*D*U)' X = B, where L is a unit lower triangular matrix, D is a
diagonal matrix, and U is a unit upper triangular matrix and ' denotes transpose.
(SLAP Package).
 
Classes  :  D2e . Operations associated with the solution of systems of linear
                equations, including matrix inverses, and LU and related
                factorizations (e.g., matrix reorderings)
 
Type     : Fortran subroutine in SLATEC library.
Access   : Public domain. Portable.
Precision: Double.
 
Usage    : CALL DSMMI2 (N, B, X, IL, JL, L, DINV, IU, JU, U)
 
See also : DSILUS
 
Details  : Documentation Fullsource Source
Sites    : (1) ARNO (2) ITL
 

Implementation of DSMMI2 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: SSMMI2)
 
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 DSMMI2 from SLATEC on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double. (Single: SSMMI2)
 
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 dsmmi2
   Source       : slatecsrc DSMMI2
   Fullsource   : slatecsrcx dsmmi2