clarfx man page on Scientific

```CLARFX(1)	    LAPACK auxiliary routine (version 3.2)	     CLARFX(1)

NAME
CLARFX  -  applies a complex elementary reflector H to a complex m by n
matrix C, from either the left or the right

SYNOPSIS
SUBROUTINE CLARFX( SIDE, M, N, V, TAU, C, LDC, WORK )

IMPLICIT	  NONE

CHARACTER	  SIDE

INTEGER	  LDC, M, N

COMPLEX	  TAU

COMPLEX	  C( LDC, * ), V( * ), WORK( * )

PURPOSE
CLARFX 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'
where tau is a complex scalar and v is a complex vector.
If tau = 0, then H is taken to be the unit matrix
This version uses inline code if H has order < 11.

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

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 array, dimension (M) if SIDE = 'L'
or (N) if SIDE = 'R' The vector v in the representation of H.

TAU     (input) COMPLEX
The value tau in the representation of H.

C       (input/output) COMPLEX 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'.

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

WORK    (workspace) COMPLEX array, dimension (N) if SIDE = 'L'
or  (M)	if  SIDE = 'R' WORK is not referenced if H has order <
11.

LAPACK auxiliary routine (versioNovember 2008			     CLARFX(1)
```
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