ZLATZM(3)      LAPACK routine of NEC Numeric Library Collection      ZLATZM(3)



NAME
       ZLATZM

SYNOPSIS
       SUBROUTINE ZLATZM (SIDE, M, N, V, INCV, TAU, C1, C2, LDC, WORK)



PURPOSE
            This routine is deprecated and has been replaced by routine ZUNMRZ.

            ZLATZM applies a Householder matrix generated by ZTZRQF to a matrix.

            Let P = I - tau*u*u**H,   u = ( 1 ),
                                          ( v )
            where v is an (m-1) vector if SIDE = 'L', or a (n-1) vector if
            SIDE = 'R'.

            If SIDE equals 'L', let
                   C = [ C1 ] 1
                       [ C2 ] m-1
                         n
            Then C is overwritten by P*C.

            If SIDE equals 'R', let
                   C = [ C1, C2 ] m
                          1  n-1
            Then C is overwritten by C*P.




ARGUMENTS
           SIDE      (input)
                     SIDE is CHARACTER*1
                     = 'L': form P * C
                     = 'R': form C * P

           M         (input)
                     M is INTEGER
                     The number of rows of the matrix C.

           N         (input)
                     N is INTEGER
                     The number of columns of the matrix C.

           V         (input)
                     V is COMPLEX*16 array, dimension
                             (1 + (M-1)*abs(INCV)) if SIDE = 'L'
                             (1 + (N-1)*abs(INCV)) if SIDE = 'R'
                     The vector v in the representation of P. V is not used
                     if TAU = 0.

           INCV      (input)
                     INCV is INTEGER
                     The increment between elements of v. INCV <> 0

           TAU       (input)
                     TAU is COMPLEX*16
                     The value tau in the representation of P.

           C1        (input/output)
                     C1 is COMPLEX*16 array, dimension
                                    (LDC,N) if SIDE = 'L'
                                    (M,1)   if SIDE = 'R'
                     On entry, the n-vector C1 if SIDE = 'L', or the m-vector C1
                     if SIDE = 'R'.

                     On exit, the first row of P*C if SIDE = 'L', or the first
                     column of C*P if SIDE = 'R'.

           C2        (input/output)
                     C2 is COMPLEX*16 array, dimension
                                    (LDC, N)   if SIDE = 'L'
                                    (LDC, N-1) if SIDE = 'R'
                     On entry, the (m - 1) x n matrix C2 if SIDE = 'L', or the
                     m x (n - 1) matrix C2 if SIDE = 'R'.

                     On exit, rows 2:m of P*C if SIDE = 'L', or columns 2:m of C*P
                     if SIDE = 'R'.

           LDC       (input)
                     LDC is INTEGER
                     The leading dimension of the arrays C1 and C2.
                     LDC >= max(1,M).

           WORK      (output)
                     WORK is COMPLEX*16 array, dimension
                                 (N) if SIDE = 'L'
                                 (M) if SIDE = 'R'



LAPACK routine                  31 October 2017                      ZLATZM(3)