Module HQR2 in SLATEC

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

HQR2

 
Compute the eigenvalues and eigenvectors of a real upper Hessenberg matrix using
QR method.
 
Classes  :  D4c2b . Compute eigenvalues of Hessenberg matrix
 
Type     : Fortran subroutine in SLATEC library.
Access   : Public domain. Portable.
Precision: Single.
 
Usage    : CALL HQR2 (NM, N, LOW, IGH, H, WR, WI, Z, IERR)
 
See also : EISDOC
 
Details  : Documentation Fullsource Source
Sites    : (1) ARNO (2) ITL
 

Implementation of HQR2 from SLATEC on ARNO

 
ARNO:      Silicon Graphics Origin 2000, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Single.
 
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 HQR2 from SLATEC on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Single.
 
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 hqr2
   Source       : slatecsrc HQR2
   Fullsource   : slatecsrcx hqr2