Module A14A15 in NASHLIB

• NASHLIB Information

• Components
  • Source from ITL

A14A15

 
Use the Jacobi algorithm to find the eigenvalues and eigenvectors of a real
symmetric matrix. Use the Jacobi algorithm to solve the generalized eigenvalue
problem for real symmetric matrices. Illustrates use of algorithms A14JE and
A15GSE. (See J.C. Nash, Compact Numerical Methods for Computers: Linear Algebra
and Function Minimization, John Wiley, New York, 1979, pages 106-115.).
 
Classes  :  D4a1 . Real symmetric matrix eigenvalue problems
            D4b1 . Real symmetric generalized matrix eigenvalue problems
 
Type     : Fortran software in NASHLIB collection.
Access   : Public domain. Portable.
Precision: Single.
 
Usage    : CALL A14JE(N, A, NA, V, NV, ISWP, IPR, SETV, COMV), CALL A15GSE(N, A,
           NA, B, NB, V, NV, FAIL, ISWP, IPR)
 
Details  : Source
Sites    : (1) ITL
 

Implementation of A14A15 from NASHLIB on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Single.