Module SPOFA in SLATEC

General Information

Factor a real symmetric positive definite matrix.

Usage

CALL SPOFA (A, LDA, N, INFO)

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

Alternates

DPOFA

Double Precision

Download from ARNO; Silicon Graphics Origin 2000

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.

To Link

f77 -o prog prog.f -lslatec

Installation on ITL; Unix Workstation Network

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.

Documentation

slatecdoc spofa

Fullsource

slatecsrcx spofa

Source

slatecsrc SPOFA

To Link

f77 -o example example.f -lslatec