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

NAME
       TESTING/LIN/zgeqls.f

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

Function/Subroutine Documentation
   subroutine zgeqls (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)
       ZGEQLS

       Purpose:


            Solve the least squares problem
                min || A*X - B ||
            using the QL factorization
                A = Q*L
            computed by ZGEQLF.

       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.  M >= N >= 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 QL factorization of the original matrix A as
                     returned by ZGEQLF.

           LDA

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

           TAU

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

           B

                     B is COMPLEX*16 array, dimension (LDB,NRHS)
                     On entry, the m-by-nrhs right hand side matrix B.
                     On exit, the n-by-nrhs solution matrix X, stored in rows
                     m-n+1:m.

           LDB

                     LDB is INTEGER
                     The leading dimension of the array B. LDB >= M.

           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 zgeqls.f.

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

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