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zlarf examples
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Man Page Details
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 Online html documentation available at 
            http://www.netlib.org/lapack/explore-html/ 

 Definition:
 ===========

       SUBROUTINE ZLARF( SIDE, M, N, V, INCV, TAU, C, LDC, WORK )
 
       .. Scalar Arguments ..
       CHARACTER          SIDE
       INTEGER            INCV, LDC, M, N
       COMPLEX*16         TAU
       ..
       .. Array Arguments ..
       COMPLEX*16         C( LDC, * ), V( * ), WORK( * )
       ..
  

 Purpose:
 =============

 ZLARF applies a complex elementary reflector H to a complex M-by-N
 matrix C, from either the left or the right. H is represented in the
 form

       H = I - tau * v * v**H

 where tau is a complex scalar and v is a complex vector.

 If tau = 0, then H is taken to be the unit matrix.

 To apply H**H, supply conjg(tau) instead
 tau.

 Arguments:
 ==========

  [in] SIDE

          SIDE is CHARACTER*1
          = 'L': form  H * C
          = 'R': form  C * H

  [in] M

          M is INTEGER
          The number of rows of the matrix C.

  [in] N

          N is INTEGER
          The number of columns of the matrix C.

  [in] V

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

  [in] INCV

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

  [in] TAU

          TAU is COMPLEX*16
          The value tau in the representation of H.

  [in,out] C

          C is COMPLEX*16 array, dimension (LDC,N)
          On entry, the M-by-N matrix C.
          On exit, C is overwritten by the matrix H * C if SIDE = 'L',
          or C * H if SIDE = 'R'.

  [in] LDC

          LDC is INTEGER
          The leading dimension of the array C. LDC >= max(1,M).

  [out] WORK

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

 Authors:
 ========

  Univ. of Tennessee 
  Univ. of California Berkeley 
  Univ. of Colorado Denver 
  NAG Ltd. 

 November 2011

