Provided by: liblapack-doc_3.3.1-1_all

#### NAME

```       LAPACK-3 - routine i deprecated and has been replaced by routine ZUNMRZ

```

#### SYNOPSIS

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

CHARACTER      SIDE

INTEGER        INCV, LDC, M, N

COMPLEX*16     TAU

COMPLEX*16     C1( LDC, * ), C2( LDC, * ), V( * ), 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```       This routine is deprecated and has been replaced by routine ZUNMRZ.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) CHARACTER*1
= 'L': form P * C
= 'R': form C * P

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

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

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

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

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

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

LAPACK routine (version 3.3.1)             April 2011                            ZLATZM(3lapack)
```