529 lines
9.1 KiB
C
529 lines
9.1 KiB
C
/*********************************************************************/
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/* Copyright 2009, 2010 The University of Texas at Austin. */
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/* All rights reserved. */
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/* */
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/* Redistribution and use in source and binary forms, with or */
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/* without modification, are permitted provided that the following */
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/* conditions are met: */
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/* */
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/* 1. Redistributions of source code must retain the above */
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/* copyright notice, this list of conditions and the following */
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/* disclaimer. */
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/* */
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/* 2. Redistributions in binary form must reproduce the above */
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/* copyright notice, this list of conditions and the following */
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/* disclaimer in the documentation and/or other materials */
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/* provided with the distribution. */
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/* */
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/* THIS SOFTWARE IS PROVIDED BY THE UNIVERSITY OF TEXAS AT */
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/* AUSTIN ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, */
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/* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF */
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/* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE */
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/* DISCLAIMED. IN NO EVENT SHALL THE UNIVERSITY OF TEXAS AT */
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/* AUSTIN OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, */
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/* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES */
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/* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE */
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/* GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR */
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/* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF */
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/* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT */
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/* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT */
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/* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE */
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/* POSSIBILITY OF SUCH DAMAGE. */
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/* */
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/* The views and conclusions contained in the software and */
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/* documentation are those of the authors and should not be */
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/* interpreted as representing official policies, either expressed */
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/* or implied, of The University of Texas at Austin. */
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/*********************************************************************/
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#include <stdio.h>
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#include "common.h"
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#ifndef MINUS
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#define a2 (a1 + 1)
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#define a4 (a3 + 1)
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#define a6 (a5 + 1)
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#define a8 (a7 + 1)
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#else
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#define a2 (a1 - 1)
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#define a4 (a3 - 1)
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#define a6 (a5 - 1)
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#define a8 (a7 - 1)
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#endif
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int CNAME(BLASLONG n, BLASLONG k1, BLASLONG k2, FLOAT dummy1, FLOAT *a, BLASLONG lda,
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FLOAT *dummy2, BLASLONG dumy3, blasint *ipiv, BLASLONG incx){
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BLASLONG i, j, ip1, ip2;
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blasint *piv;
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FLOAT *a1, *a3, *a5, *a7;
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FLOAT *b1, *b2, *b3, *b4;
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FLOAT *b5, *b6, *b7, *b8;
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FLOAT A1, A2, B1, B2, A3, A4, B3, B4;
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FLOAT A5, A6, B5, B6, A7, A8, B7, B8;
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a--;
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k1 --;
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#ifndef MINUS
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ipiv += k1
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;
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#else
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ipiv -= (k2 - 1) * incx;
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#endif
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if (n <= 0) return 0;
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j = (n >> 2);
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if (j > 0) {
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do {
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piv = ipiv;
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#ifndef MINUS
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a1 = a + k1 + 1;
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#else
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a1 = a + k2;
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#endif
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a3 = a1 + 1 * lda;
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a5 = a1 + 2 * lda;
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a7 = a1 + 3 * lda;
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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b1 = a + ip1;
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b2 = a + ip2;
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b3 = b1 + 1 * lda;
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b4 = b2 + 1 * lda;
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b5 = b1 + 2 * lda;
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b6 = b2 + 2 * lda;
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b7 = b1 + 3 * lda;
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b8 = b2 + 3 * lda;
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i = ((k2 - k1) >> 1);
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if (i > 0) {
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do {
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A1 = *a1;
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A2 = *a2;
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A3 = *a3;
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A4 = *a4;
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A5 = *a5;
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A6 = *a6;
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A7 = *a7;
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A8 = *a8;
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B1 = *b1;
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B2 = *b2;
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B3 = *b3;
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B4 = *b4;
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B5 = *b5;
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B6 = *b6;
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B7 = *b7;
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B8 = *b8;
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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if (b1 == a1) {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = A1;
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*a3 = A4;
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*a4 = A3;
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*a5 = A6;
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*a6 = A5;
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*a7 = A8;
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*a8 = A7;
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} else
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if (b2 != a2) {
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*a2 = B2;
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*b2 = A2;
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*a4 = B4;
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*b4 = A4;
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*a6 = B6;
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*b6 = A6;
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*a8 = B8;
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*b8 = A8;
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}
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} else
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if (b1 == a2) {
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if (b2 != a1) {
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if (b2 == a2) {
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*a1 = A2;
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*a2 = A1;
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*a3 = A4;
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*a4 = A3;
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*a5 = A6;
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*a6 = A5;
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*a7 = A8;
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*a8 = A7;
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} else {
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*a1 = A2;
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*a2 = B2;
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*b2 = A1;
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*a3 = A4;
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*a4 = B4;
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*b4 = A3;
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*a5 = A6;
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*a6 = B6;
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*b6 = A5;
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*a7 = A8;
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*a8 = B8;
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*b8 = A7;
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}
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}
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} else {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = B1;
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*b1 = A1;
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*a3 = A4;
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*a4 = B3;
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*b3 = A3;
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*a5 = A6;
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*a6 = B5;
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*b5 = A5;
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*a7 = A8;
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*a8 = B7;
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*b7 = A7;
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} else
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if (b2 == a2) {
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*a1 = B1;
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*b1 = A1;
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*a3 = B3;
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*b3 = A3;
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*a5 = B5;
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*b5 = A5;
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*a7 = B7;
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*b7 = A7;
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} else
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if (b2 == b1) {
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*a1 = B1;
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*a2 = A1;
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*b1 = A2;
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*a3 = B3;
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*a4 = A3;
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*b3 = A4;
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*a5 = B5;
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*a6 = A5;
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*b5 = A6;
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*a7 = B7;
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*a8 = A7;
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*b7 = A8;
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} else {
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*a1 = B1;
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*a2 = B2;
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*b1 = A1;
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*b2 = A2;
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*a3 = B3;
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*a4 = B4;
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*b3 = A3;
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*b4 = A4;
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*a5 = B5;
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*a6 = B6;
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*b5 = A5;
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*b6 = A6;
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*a7 = B7;
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*a8 = B8;
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*b7 = A7;
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*b8 = A8;
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}
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}
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b1 = a + ip1;
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b2 = a + ip2;
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b3 = b1 + 1 * lda;
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b4 = b2 + 1 * lda;
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b5 = b1 + 2 * lda;
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b6 = b2 + 2 * lda;
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b7 = b1 + 3 * lda;
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b8 = b2 + 3 * lda;
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#ifndef MINUS
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a1 += 2;
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a3 += 2;
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a5 += 2;
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a7 += 2;
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#else
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a1 -= 2;
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a3 -= 2;
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a5 -= 2;
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a7 -= 2;
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#endif
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i --;
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} while (i > 0);
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}
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i = ((k2 - k1) & 1);
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if (i > 0) {
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A1 = *a1;
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B1 = *b1;
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A3 = *a3;
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B3 = *b3;
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A5 = *a5;
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B5 = *b5;
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A7 = *a7;
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B7 = *b7;
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*a1 = B1;
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*b1 = A1;
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*a3 = B3;
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*b3 = A3;
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*a5 = B5;
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*b5 = A5;
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*a7 = B7;
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*b7 = A7;
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}
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a += 4 * lda;
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j --;
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} while (j > 0);
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}
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if (n & 2) {
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piv = ipiv;
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#ifndef MINUS
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a1 = a + k1 + 1;
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#else
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a1 = a + k2;
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#endif
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a3 = a1 + 1 * lda;
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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b1 = a + ip1;
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b2 = a + ip2;
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b3 = b1 + 1 * lda;
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b4 = b2 + 1 * lda;
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i = ((k2 - k1) >> 1);
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if (i > 0) {
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do {
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A1 = *a1;
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A2 = *a2;
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A3 = *a3;
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A4 = *a4;
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B1 = *b1;
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B2 = *b2;
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B3 = *b3;
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B4 = *b4;
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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if (b1 == a1) {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = A1;
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*a3 = A4;
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*a4 = A3;
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} else
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if (b2 != a2) {
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*a2 = B2;
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*b2 = A2;
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*a4 = B4;
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*b4 = A4;
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}
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} else
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if (b1 == a2) {
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if (b2 != a1) {
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if (b2 == a2) {
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*a1 = A2;
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*a2 = A1;
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*a3 = A4;
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*a4 = A3;
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} else {
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*a1 = A2;
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*a2 = B2;
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*b2 = A1;
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*a3 = A4;
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*a4 = B4;
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*b4 = A3;
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}
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}
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} else {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = B1;
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*b1 = A1;
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*a3 = A4;
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*a4 = B3;
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*b3 = A3;
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} else
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if (b2 == a2) {
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*a1 = B1;
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*b1 = A1;
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*a3 = B3;
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*b3 = A3;
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} else
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if (b2 == b1) {
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*a1 = B1;
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*a2 = A1;
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*b1 = A2;
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*a3 = B3;
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*a4 = A3;
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*b3 = A4;
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} else {
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*a1 = B1;
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*a2 = B2;
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*b1 = A1;
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*b2 = A2;
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*a3 = B3;
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*a4 = B4;
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*b3 = A3;
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*b4 = A4;
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}
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}
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b1 = a + ip1;
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b2 = a + ip2;
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b3 = b1 + 1 * lda;
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b4 = b2 + 1 * lda;
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#ifndef MINUS
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a1 += 2;
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a3 += 2;
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#else
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a1 -= 2;
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a3 -= 2;
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#endif
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i --;
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} while (i > 0);
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}
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i = ((k2 - k1) & 1);
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if (i > 0) {
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A1 = *a1;
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B1 = *b1;
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A3 = *a3;
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B3 = *b3;
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*a1 = B1;
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*b1 = A1;
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*a3 = B3;
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*b3 = A3;
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}
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a += 2 * lda;
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}
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if (n & 1) {
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piv = ipiv;
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#ifndef MINUS
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a1 = a + k1 + 1;
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#else
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a1 = a + k2;
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#endif
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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b1 = a + ip1;
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b2 = a + ip2;
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i = ((k2 - k1) >> 1);
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if (i > 0) {
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do {
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A1 = *a1;
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A2 = *a2;
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B1 = *b1;
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B2 = *b2;
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ip1 = *piv;
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piv += incx;
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ip2 = *piv;
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piv += incx;
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if (b1 == a1) {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = A1;
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} else
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if (b2 != a2) {
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*a2 = B2;
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*b2 = A2;
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}
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} else
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if (b1 == a2) {
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if (b2 != a1) {
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if (b2 == a2) {
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*a1 = A2;
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*a2 = A1;
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} else {
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*a1 = A2;
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*a2 = B2;
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*b2 = A1;
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}
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}
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} else {
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if (b2 == a1) {
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*a1 = A2;
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*a2 = B1;
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*b1 = A1;
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} else
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if (b2 == a2) {
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*a1 = B1;
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*b1 = A1;
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} else
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if (b2 == b1) {
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*a1 = B1;
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*a2 = A1;
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*b1 = A2;
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} else {
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*a1 = B1;
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*a2 = B2;
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*b1 = A1;
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*b2 = A2;
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}
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}
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b1 = a + ip1;
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b2 = a + ip2;
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#ifndef MINUS
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a1 += 2;
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#else
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a1 -= 2;
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#endif
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i --;
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} while (i > 0);
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}
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i = ((k2 - k1) & 1);
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if (i > 0) {
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A1 = *a1;
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B1 = *b1;
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*a1 = B1;
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*b1 = A1;
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}
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}
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return 0;
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}
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