Module COMQR in CMLIB

• CMLIB Information

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

COMQR

 
Computes eigenvalues of complex upper Hessenberg matrix using the QR method.
 
Classes  :  D4c2b . Compute eigenvalues of Hessenberg matrix
 
Type     : Fortran subroutine in CMLIB library (EISPACK sublibrary).
Access   : Public domain. Portable.
Precision: Single.
 
Usage    : CALL COMQR(NM,N,LOW,IGH,HR,HI,WR,WI,IERR)
 
Details  : Documentation Fullsource Source
Sites    : (1) ARNO (2) ITL
 

Implementation of COMQR from CMLIB 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         : See cmlib man page.
   Documentation: cmdoc comqr
   Source       : cmsrc comqr
   Fullsource   : cmsrcx comqr
 

Implementation of COMQR from CMLIB 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 main main.f -lcm
   Documentation: cmdoc comqr
   Source       : cmsrc COMQR
   Fullsource   : cmsrcx comqr