TESTING/LIN/zgerqs.f(3)    Library Functions Manual    TESTING/LIN/zgerqs.f(3)

NAME
       TESTING/LIN/zgerqs.f

SYNOPSIS
   Functions/Subroutines
       subroutine zgerqs (m, n, nrhs, a, lda, tau, b, ldb, work, lwork, info)
           ZGERQS

Function/Subroutine Documentation
   subroutine zgerqs (integer m, integer n, integer nrhs, complex*16,
       dimension( lda, * ) a, integer lda, complex*16, dimension( * ) tau,
       complex*16, dimension( ldb, * ) b, integer ldb, complex*16, dimension(
       lwork ) work, integer lwork, integer info)
       ZGERQS

       Purpose:


            Compute a minimum-norm solution
                min || A*X - B ||
            using the RQ factorization
                A = R*Q
            computed by ZGERQF.

       Parameters
           M

                     M is INTEGER
                     The number of rows of the matrix A.  M >= 0.

           N

                     N is INTEGER
                     The number of columns of the matrix A.  N >= M >= 0.

           NRHS

                     NRHS is INTEGER
                     The number of columns of B.  NRHS >= 0.

           A

                     A is COMPLEX*16 array, dimension (LDA,N)
                     Details of the RQ factorization of the original matrix A as
                     returned by ZGERQF.

           LDA

                     LDA is INTEGER
                     The leading dimension of the array A.  LDA >= M.

           TAU

                     TAU is COMPLEX*16 array, dimension (M)
                     Details of the orthogonal matrix Q.

           B

                     B is COMPLEX*16 array, dimension (LDB,NRHS)
                     On entry, the right hand side vectors for the linear system.
                     On exit, the solution vectors X.  Each solution vector
                     is contained in rows 1:N of a column of B.

           LDB

                     LDB is INTEGER
                     The leading dimension of the array B. LDB >= max(1,N).

           WORK

                     WORK is COMPLEX*16 array, dimension (LWORK)

           LWORK

                     LWORK is INTEGER
                     The length of the array WORK.  LWORK must be at least NRHS,
                     and should be at least NRHS*NB, where NB is the block size
                     for this environment.

           INFO

                     INFO is INTEGER
                     = 0: successful exit
                     < 0: if INFO = -i, the i-th argument had an illegal value

       Author
           Univ. of Tennessee

           Univ. of California Berkeley

           Univ. of Colorado Denver

           NAG Ltd.

       Definition at line 120 of file zgerqs.f.

Author
       Generated automatically by Doxygen for LAPACK from the source code.

LAPACK                          Version 3.12.0         TESTING/LIN/zgerqs.f(3)