Provided by: liblapack-doc_3.3.1-1_all bug

NAME

       LAPACK-3  -  forms  the right or left eigenvectors of a complex general matrix by backward
       transformation on the computed eigenvectors of the balanced matrix output by ZGEBAL

SYNOPSIS

       SUBROUTINE ZGEBAK( JOB, SIDE, N, ILO, IHI, SCALE, M, V, LDV, INFO )

           CHARACTER      JOB, SIDE

           INTEGER        IHI, ILO, INFO, LDV, M, N

           DOUBLE         PRECISION SCALE( * )

           COMPLEX*16     V( LDV, * )

PURPOSE

       ZGEBAK forms the right or left eigenvectors  of  a  complex  general  matrix  by  backward
       transformation on the computed eigenvectors of the balanced matrix output by ZGEBAL.

ARGUMENTS

        JOB     (input) CHARACTER*1
                Specifies the type of backward transformation required:
                = 'N', do nothing, return immediately;
                = 'P', do backward transformation for permutation only;
                = 'S', do backward transformation for scaling only;
                = 'B', do backward transformations for both permutation and
                scaling.
                JOB must be the same as the argument JOB supplied to ZGEBAL.

        SIDE    (input) CHARACTER*1
                = 'R':  V contains right eigenvectors;
                = 'L':  V contains left eigenvectors.

        N       (input) INTEGER
                The number of rows of the matrix V.  N >= 0.

        ILO     (input) INTEGER
                IHI     (input) INTEGER
                The integers ILO and IHI determined by ZGEBAL.
                1 <= ILO <= IHI <= N, if N > 0; ILO=1 and IHI=0, if N=0.

        SCALE   (input) DOUBLE PRECISION array, dimension (N)
                Details of the permutation and scaling factors, as returned
                by ZGEBAL.

        M       (input) INTEGER
                The number of columns of the matrix V.  M >= 0.

        V       (input/output) COMPLEX*16 array, dimension (LDV,M)
                On entry, the matrix of right or left eigenvectors to be
                transformed, as returned by ZHSEIN or ZTREVC.
                On exit, V is overwritten by the transformed eigenvectors.

        LDV     (input) INTEGER
                The leading dimension of the array V. LDV >= max(1,N).

        INFO    (output) INTEGER
                = 0:  successful exit
                < 0:  if INFO = -i, the i-th argument had an illegal value.

 LAPACK routine (version 3.2)               April 2011                            ZGEBAK(3lapack)