Module ZGBBRD in LAPACK

• LAPACK Information

• Components
  • Fullsource from NETLIB
  • NeededBLAS from ITL
  • Source from NETLIB

ZGBBRD

 
Reduces a complex general m-by-n band matrix A to real upper bidiagonal form B by a
unitary transformation: Q' * A * P = B. The routine computes B and optionally forms Q
or P', or computes Q' * C for a given matrix C.
 
Classes  :  D2c2 . Solution of systems of linear equations, including matrix
                 inverses, and LU and related factorizations (complex
                 non-Hermitian banded matrices)
 
Type     : Fortran subroutine in LAPACK package.
Access   : Public domain. Portable.
Precision: Double.
 
Usage    : CALL ZGBBRD (VECT, M, N, NCC, KL, KU, AB, LDAB, D, E, Q, LDQ, PT, LDPT, C,
           LDC, WORK, RWORK, INFO)
 
Details  : Fullsource NeededBLAS Source
Sites    : (1) ITL (2) NETLIB
 

Implementation of ZGBBRD from LAPACK on ITL

 
ITL:       Unix Workstation Network, National Institute of Standards and
           Technology (NIST), Gaithersburg, MD. Available to NIST staff.
 
Precision: Double. (Single: CGBBRD)
 
Access available only to NIST staff on internal Unix systems. They may access this
package provided the /itl tree is cross-mounted.
 
   Access       : f77 -o myprog myprog.f -llapack -lblas
   NeededBLAS   : Can be downloaded from netlib
 

Implementation of ZGBBRD from LAPACK on NETLIB

 
NETLIB:    Public access repository, The University of Tennessee at
           Knoxville and Bell Laboratories
 
Precision: Double. (Single: CGBBRD)
 
You may access components from NETLIB outside GAMS as follows.
 
   Source       : See LAPACK Web Page
   Fullsource   : See LAPACK Web Page