Module SPOIR in SLATEC

General Information

Solve a positive definite symmetric system of linear equations. Iterative refinement is used to obtain an error estimate.

Usage

CALL SPOIR (A, LDA, N, V, ITASK, IND, WORK)

Classification

D2b1b

Solution of systems of linear equations, including matrix inverses, and LU and related factorizations (real symmetric positive definite matrices)

Type

subroutine in SLATEC package

Language

Fortran

Availability

Public domain, Portable

Precision

Single Precision

Location

National Institute of Standards and Technology (NIST), Gaithersburg, MD.

Contact

Gaithersburg Consulting Office: 301-975-2968, consult@nist.gov

Usage

Those logged in to arno.nist.gov or amur.nist.gov may access this module as follows.

Location

National Institute of Standards and Technology (NIST), Gaithersburg, MD.

Contact

Gaithersburg Consulting Office: 301-975-2968 (FTS 879-2968)

Usage

Access available only to NIST staff on internal Unix systems. They may access this package provided the /itl tree is cross-mounted.