/* -- translated by f2c (version 20100827).
You must link the resulting object file with libf2c:
on Microsoft Windows system, link with libf2c.lib;
on Linux or Unix systems, link with .../path/to/libf2c.a -lm
or, if you install libf2c.a in a standard place, with -lf2c -lm
-- in that order, at the end of the command line, as in
cc *.o -lf2c -lm
Source for libf2c is in /netlib/f2c/libf2c.zip, e.g.,
http://www.netlib.org/f2c/libf2c.zip
*/
#include "f2c.h"
/* Table of constant values */
static integer c__1 = 1;
/* > \brief \b DLARFX applies an elementary reflector to a general rectangular matrix, with loop unrolling whe
n the reflector has order ≤ 10.
=========== DOCUMENTATION ===========
Online html documentation available at
http://www.netlib.org/lapack/explore-html/
> \htmlonly
> Download DLARFX + dependencies
> <a href="http://www.netlib.org/cgi-bin/netlibfiles.tgz?format=tgz&filename=/lapack/lapack_routine/dlarfx.
f">
> [TGZ]</a>
> <a href="http://www.netlib.org/cgi-bin/netlibfiles.zip?format=zip&filename=/lapack/lapack_routine/dlarfx.
f">
> [ZIP]</a>
> <a href="http://www.netlib.org/cgi-bin/netlibfiles.txt?format=txt&filename=/lapack/lapack_routine/dlarfx.
f">
> [TXT]</a>
> \endhtmlonly
Definition:
===========
SUBROUTINE DLARFX( SIDE, M, N, V, TAU, C, LDC, WORK )
CHARACTER SIDE
INTEGER LDC, M, N
DOUBLE PRECISION TAU
DOUBLE PRECISION C( LDC, * ), V( * ), WORK( * )
> \par Purpose:
=============
>
> \verbatim
>
> DLARFX applies a real elementary reflector H to a real m by n
> matrix C, from either the left or the right. H is represented in the
> form
>
> H = I - tau * v * v**T
>
> where tau is a real scalar and v is a real vector.
>
> If tau = 0, then H is taken to be the unit matrix
>
> This version uses inline code if H has order < 11.
> \endverbatim
Arguments:
==========
> \param[in] SIDE
> \verbatim
> SIDE is CHARACTER*1
> = 'L': form H * C
> = 'R': form C * H
> \endverbatim
>
> \param[in] M
> \verbatim
> M is INTEGER
> The number of rows of the matrix C.
> \endverbatim
>
> \param[in] N
> \verbatim
> N is INTEGER
> The number of columns of the matrix C.
> \endverbatim
>
> \param[in] V
> \verbatim
> V is DOUBLE PRECISION array, dimension (M) if SIDE = 'L'
> or (N) if SIDE = 'R'
> The vector v in the representation of H.
> \endverbatim
>
> \param[in] TAU
> \verbatim
> TAU is DOUBLE PRECISION
> The value tau in the representation of H.
> \endverbatim
>
> \param[in,out] C
> \verbatim
> C is DOUBLE PRECISION 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'.
> \endverbatim
>
> \param[in] LDC
> \verbatim
> LDC is INTEGER
> The leading dimension of the array C. LDA >= (1,M).
> \endverbatim
>
> \param[out] WORK
> \verbatim
> WORK is DOUBLE PRECISION array, dimension
> (N) if SIDE = 'L'
> or (M) if SIDE = 'R'
> WORK is not referenced if H has order < 11.
> \endverbatim
Authors:
========
> \author Univ. of Tennessee
> \author Univ. of California Berkeley
> \author Univ. of Colorado Denver
> \author NAG Ltd.
> \date September 2012
> \ingroup doubleOTHERauxiliary
=====================================================================
Subroutine */ int igraphdlarfx_(char *side, integer *m, integer *n, doublereal *
v, doublereal *tau, doublereal *c__, integer *ldc, doublereal *work)
{
/* System generated locals */
integer c_dim1, c_offset, i__1;
/* Local variables */
integer j;
doublereal t1, t2, t3, t4, t5, t6, t7, t8, t9, v1, v2, v3, v4, v5, v6, v7,
v8, v9, t10, v10, sum;
extern /* Subroutine */ int igraphdlarf_(char *, integer *, integer *,
doublereal *, integer *, doublereal *, doublereal *, integer *,
doublereal *);
extern logical igraphlsame_(char *, char *);
/* -- LAPACK auxiliary routine (version 3.4.2) --
-- LAPACK is a software package provided by Univ. of Tennessee, --
-- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..--
September 2012
=====================================================================
Parameter adjustments */
--v;
c_dim1 = *ldc;
c_offset = 1 + c_dim1;
c__ -= c_offset;
--work;
/* Function Body */
if (*tau == 0.) {
return 0;
}
if (igraphlsame_(side, "L")) {
/* Form H * C, where H has order m. */
switch (*m) {
case 1: goto L10;
case 2: goto L30;
case 3: goto L50;
case 4: goto L70;
case 5: goto L90;
case 6: goto L110;
case 7: goto L130;
case 8: goto L150;
case 9: goto L170;
case 10: goto L190;
}
/* Code for general M */
igraphdlarf_(side, m, n, &v[1], &c__1, tau, &c__[c_offset], ldc, &work[1]);
goto L410;
L10:
/* Special code for 1 x 1 Householder */
t1 = 1. - *tau * v[1] * v[1];
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
c__[j * c_dim1 + 1] = t1 * c__[j * c_dim1 + 1];
/* L20: */
}
goto L410;
L30:
/* Special code for 2 x 2 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
/* L40: */
}
goto L410;
L50:
/* Special code for 3 x 3 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
/* L60: */
}
goto L410;
L70:
/* Special code for 4 x 4 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3] + v4 * c__[j * c_dim1 + 4];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
c__[j * c_dim1 + 4] -= sum * t4;
/* L80: */
}
goto L410;
L90:
/* Special code for 5 x 5 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3] + v4 * c__[j * c_dim1 + 4] + v5 * c__[
j * c_dim1 + 5];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
c__[j * c_dim1 + 4] -= sum * t4;
c__[j * c_dim1 + 5] -= sum * t5;
/* L100: */
}
goto L410;
L110:
/* Special code for 6 x 6 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3] + v4 * c__[j * c_dim1 + 4] + v5 * c__[
j * c_dim1 + 5] + v6 * c__[j * c_dim1 + 6];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
c__[j * c_dim1 + 4] -= sum * t4;
c__[j * c_dim1 + 5] -= sum * t5;
c__[j * c_dim1 + 6] -= sum * t6;
/* L120: */
}
goto L410;
L130:
/* Special code for 7 x 7 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3] + v4 * c__[j * c_dim1 + 4] + v5 * c__[
j * c_dim1 + 5] + v6 * c__[j * c_dim1 + 6] + v7 * c__[j *
c_dim1 + 7];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
c__[j * c_dim1 + 4] -= sum * t4;
c__[j * c_dim1 + 5] -= sum * t5;
c__[j * c_dim1 + 6] -= sum * t6;
c__[j * c_dim1 + 7] -= sum * t7;
/* L140: */
}
goto L410;
L150:
/* Special code for 8 x 8 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
v8 = v[8];
t8 = *tau * v8;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3] + v4 * c__[j * c_dim1 + 4] + v5 * c__[
j * c_dim1 + 5] + v6 * c__[j * c_dim1 + 6] + v7 * c__[j *
c_dim1 + 7] + v8 * c__[j * c_dim1 + 8];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
c__[j * c_dim1 + 4] -= sum * t4;
c__[j * c_dim1 + 5] -= sum * t5;
c__[j * c_dim1 + 6] -= sum * t6;
c__[j * c_dim1 + 7] -= sum * t7;
c__[j * c_dim1 + 8] -= sum * t8;
/* L160: */
}
goto L410;
L170:
/* Special code for 9 x 9 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
v8 = v[8];
t8 = *tau * v8;
v9 = v[9];
t9 = *tau * v9;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3] + v4 * c__[j * c_dim1 + 4] + v5 * c__[
j * c_dim1 + 5] + v6 * c__[j * c_dim1 + 6] + v7 * c__[j *
c_dim1 + 7] + v8 * c__[j * c_dim1 + 8] + v9 * c__[j *
c_dim1 + 9];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
c__[j * c_dim1 + 4] -= sum * t4;
c__[j * c_dim1 + 5] -= sum * t5;
c__[j * c_dim1 + 6] -= sum * t6;
c__[j * c_dim1 + 7] -= sum * t7;
c__[j * c_dim1 + 8] -= sum * t8;
c__[j * c_dim1 + 9] -= sum * t9;
/* L180: */
}
goto L410;
L190:
/* Special code for 10 x 10 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
v8 = v[8];
t8 = *tau * v8;
v9 = v[9];
t9 = *tau * v9;
v10 = v[10];
t10 = *tau * v10;
i__1 = *n;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j * c_dim1 + 1] + v2 * c__[j * c_dim1 + 2] + v3 *
c__[j * c_dim1 + 3] + v4 * c__[j * c_dim1 + 4] + v5 * c__[
j * c_dim1 + 5] + v6 * c__[j * c_dim1 + 6] + v7 * c__[j *
c_dim1 + 7] + v8 * c__[j * c_dim1 + 8] + v9 * c__[j *
c_dim1 + 9] + v10 * c__[j * c_dim1 + 10];
c__[j * c_dim1 + 1] -= sum * t1;
c__[j * c_dim1 + 2] -= sum * t2;
c__[j * c_dim1 + 3] -= sum * t3;
c__[j * c_dim1 + 4] -= sum * t4;
c__[j * c_dim1 + 5] -= sum * t5;
c__[j * c_dim1 + 6] -= sum * t6;
c__[j * c_dim1 + 7] -= sum * t7;
c__[j * c_dim1 + 8] -= sum * t8;
c__[j * c_dim1 + 9] -= sum * t9;
c__[j * c_dim1 + 10] -= sum * t10;
/* L200: */
}
goto L410;
} else {
/* Form C * H, where H has order n. */
switch (*n) {
case 1: goto L210;
case 2: goto L230;
case 3: goto L250;
case 4: goto L270;
case 5: goto L290;
case 6: goto L310;
case 7: goto L330;
case 8: goto L350;
case 9: goto L370;
case 10: goto L390;
}
/* Code for general N */
igraphdlarf_(side, m, n, &v[1], &c__1, tau, &c__[c_offset], ldc, &work[1]);
goto L410;
L210:
/* Special code for 1 x 1 Householder */
t1 = 1. - *tau * v[1] * v[1];
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
c__[j + c_dim1] = t1 * c__[j + c_dim1];
/* L220: */
}
goto L410;
L230:
/* Special code for 2 x 2 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
/* L240: */
}
goto L410;
L250:
/* Special code for 3 x 3 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
/* L260: */
}
goto L410;
L270:
/* Special code for 4 x 4 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3] + v4 * c__[j + (c_dim1 << 2)];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
c__[j + (c_dim1 << 2)] -= sum * t4;
/* L280: */
}
goto L410;
L290:
/* Special code for 5 x 5 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3] + v4 * c__[j + (c_dim1 << 2)] + v5 *
c__[j + c_dim1 * 5];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
c__[j + (c_dim1 << 2)] -= sum * t4;
c__[j + c_dim1 * 5] -= sum * t5;
/* L300: */
}
goto L410;
L310:
/* Special code for 6 x 6 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3] + v4 * c__[j + (c_dim1 << 2)] + v5 *
c__[j + c_dim1 * 5] + v6 * c__[j + c_dim1 * 6];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
c__[j + (c_dim1 << 2)] -= sum * t4;
c__[j + c_dim1 * 5] -= sum * t5;
c__[j + c_dim1 * 6] -= sum * t6;
/* L320: */
}
goto L410;
L330:
/* Special code for 7 x 7 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3] + v4 * c__[j + (c_dim1 << 2)] + v5 *
c__[j + c_dim1 * 5] + v6 * c__[j + c_dim1 * 6] + v7 * c__[
j + c_dim1 * 7];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
c__[j + (c_dim1 << 2)] -= sum * t4;
c__[j + c_dim1 * 5] -= sum * t5;
c__[j + c_dim1 * 6] -= sum * t6;
c__[j + c_dim1 * 7] -= sum * t7;
/* L340: */
}
goto L410;
L350:
/* Special code for 8 x 8 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
v8 = v[8];
t8 = *tau * v8;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3] + v4 * c__[j + (c_dim1 << 2)] + v5 *
c__[j + c_dim1 * 5] + v6 * c__[j + c_dim1 * 6] + v7 * c__[
j + c_dim1 * 7] + v8 * c__[j + (c_dim1 << 3)];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
c__[j + (c_dim1 << 2)] -= sum * t4;
c__[j + c_dim1 * 5] -= sum * t5;
c__[j + c_dim1 * 6] -= sum * t6;
c__[j + c_dim1 * 7] -= sum * t7;
c__[j + (c_dim1 << 3)] -= sum * t8;
/* L360: */
}
goto L410;
L370:
/* Special code for 9 x 9 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
v8 = v[8];
t8 = *tau * v8;
v9 = v[9];
t9 = *tau * v9;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3] + v4 * c__[j + (c_dim1 << 2)] + v5 *
c__[j + c_dim1 * 5] + v6 * c__[j + c_dim1 * 6] + v7 * c__[
j + c_dim1 * 7] + v8 * c__[j + (c_dim1 << 3)] + v9 * c__[
j + c_dim1 * 9];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
c__[j + (c_dim1 << 2)] -= sum * t4;
c__[j + c_dim1 * 5] -= sum * t5;
c__[j + c_dim1 * 6] -= sum * t6;
c__[j + c_dim1 * 7] -= sum * t7;
c__[j + (c_dim1 << 3)] -= sum * t8;
c__[j + c_dim1 * 9] -= sum * t9;
/* L380: */
}
goto L410;
L390:
/* Special code for 10 x 10 Householder */
v1 = v[1];
t1 = *tau * v1;
v2 = v[2];
t2 = *tau * v2;
v3 = v[3];
t3 = *tau * v3;
v4 = v[4];
t4 = *tau * v4;
v5 = v[5];
t5 = *tau * v5;
v6 = v[6];
t6 = *tau * v6;
v7 = v[7];
t7 = *tau * v7;
v8 = v[8];
t8 = *tau * v8;
v9 = v[9];
t9 = *tau * v9;
v10 = v[10];
t10 = *tau * v10;
i__1 = *m;
for (j = 1; j <= i__1; ++j) {
sum = v1 * c__[j + c_dim1] + v2 * c__[j + (c_dim1 << 1)] + v3 *
c__[j + c_dim1 * 3] + v4 * c__[j + (c_dim1 << 2)] + v5 *
c__[j + c_dim1 * 5] + v6 * c__[j + c_dim1 * 6] + v7 * c__[
j + c_dim1 * 7] + v8 * c__[j + (c_dim1 << 3)] + v9 * c__[
j + c_dim1 * 9] + v10 * c__[j + c_dim1 * 10];
c__[j + c_dim1] -= sum * t1;
c__[j + (c_dim1 << 1)] -= sum * t2;
c__[j + c_dim1 * 3] -= sum * t3;
c__[j + (c_dim1 << 2)] -= sum * t4;
c__[j + c_dim1 * 5] -= sum * t5;
c__[j + c_dim1 * 6] -= sum * t6;
c__[j + c_dim1 * 7] -= sum * t7;
c__[j + (c_dim1 << 3)] -= sum * t8;
c__[j + c_dim1 * 9] -= sum * t9;
c__[j + c_dim1 * 10] -= sum * t10;
/* L400: */
}
goto L410;
}
L410:
return 0;
/* End of DLARFX */
} /* igraphdlarfx_ */