220 lines
6.4 KiB
C
220 lines
6.4 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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int CNAME(BLASLONG m, BLASLONG n, FLOAT *a, BLASLONG lda, FLOAT *b){
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BLASLONG i, j;
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FLOAT *a_offset, *a_offset1, *a_offset2;
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FLOAT *b_offset, *b_offset1, *b_offset2;
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FLOAT ctemp1, ctemp2, ctemp3, ctemp4;
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FLOAT ctemp5, ctemp6, ctemp7, ctemp8;
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FLOAT ctemp9, ctemp10, ctemp11, ctemp12;
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FLOAT ctemp13, ctemp14, ctemp15, ctemp16;
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a_offset = a;
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b_offset = b;
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b_offset2 = b + m * (n & ~1) * 2;
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lda *= 2;
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j = (m >> 1);
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if (j > 0){
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do{
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a_offset1 = a_offset;
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a_offset2 = a_offset1 + lda;
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a_offset += 2 * lda;
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b_offset1 = b_offset;
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b_offset += 8;
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i = (n >> 2);
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if (i > 0){
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do{
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ctemp1 = *(a_offset1 + 0);
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ctemp2 = *(a_offset1 + 1);
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ctemp3 = *(a_offset1 + 2);
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ctemp4 = *(a_offset1 + 3);
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ctemp5 = *(a_offset1 + 4);
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ctemp6 = *(a_offset1 + 5);
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ctemp7 = *(a_offset1 + 6);
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ctemp8 = *(a_offset1 + 7);
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ctemp9 = *(a_offset2 + 0);
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ctemp10 = *(a_offset2 + 1);
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ctemp11 = *(a_offset2 + 2);
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ctemp12 = *(a_offset2 + 3);
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ctemp13 = *(a_offset2 + 4);
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ctemp14 = *(a_offset2 + 5);
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ctemp15 = *(a_offset2 + 6);
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ctemp16 = *(a_offset2 + 7);
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*(b_offset1 + 0) = -ctemp1;
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*(b_offset1 + 1) = -ctemp2;
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*(b_offset1 + 2) = -ctemp3;
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*(b_offset1 + 3) = -ctemp4;
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*(b_offset1 + 4) = -ctemp9;
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*(b_offset1 + 5) = -ctemp10;
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*(b_offset1 + 6) = -ctemp11;
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*(b_offset1 + 7) = -ctemp12;
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b_offset1 += m * 4;
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*(b_offset1 + 0) = -ctemp5;
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*(b_offset1 + 1) = -ctemp6;
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*(b_offset1 + 2) = -ctemp7;
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*(b_offset1 + 3) = -ctemp8;
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*(b_offset1 + 4) = -ctemp13;
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*(b_offset1 + 5) = -ctemp14;
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*(b_offset1 + 6) = -ctemp15;
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*(b_offset1 + 7) = -ctemp16;
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b_offset1 += m * 4;
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a_offset1 += 8;
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a_offset2 += 8;
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i --;
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} while(i>0);
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}
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if (n & 2){
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ctemp1 = *(a_offset1 + 0);
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ctemp2 = *(a_offset1 + 1);
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ctemp3 = *(a_offset1 + 2);
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ctemp4 = *(a_offset1 + 3);
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ctemp9 = *(a_offset2 + 0);
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ctemp10 = *(a_offset2 + 1);
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ctemp11 = *(a_offset2 + 2);
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ctemp12 = *(a_offset2 + 3);
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*(b_offset1 + 0) = -ctemp1;
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*(b_offset1 + 1) = -ctemp2;
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*(b_offset1 + 2) = -ctemp3;
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*(b_offset1 + 3) = -ctemp4;
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*(b_offset1 + 4) = -ctemp9;
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*(b_offset1 + 5) = -ctemp10;
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*(b_offset1 + 6) = -ctemp11;
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*(b_offset1 + 7) = -ctemp12;
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b_offset1 += m * 4;
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a_offset1 += 4;
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a_offset2 += 4;
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}
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if (n & 1){
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ctemp1 = *(a_offset1 + 0);
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ctemp2 = *(a_offset1 + 1);
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ctemp9 = *(a_offset2 + 0);
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ctemp10 = *(a_offset2 + 1);
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*(b_offset2 + 0) = -ctemp1;
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*(b_offset2 + 1) = -ctemp2;
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*(b_offset2 + 2) = -ctemp9;
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*(b_offset2 + 3) = -ctemp10;
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b_offset2 += 4;
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}
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j--;
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} while(j > 0);
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}
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if (m & 1){
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i = (n >> 2);
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if (i > 0){
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do{
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ctemp1 = *(a_offset + 0);
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ctemp2 = *(a_offset + 1);
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ctemp3 = *(a_offset + 2);
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ctemp4 = *(a_offset + 3);
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ctemp5 = *(a_offset + 4);
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ctemp6 = *(a_offset + 5);
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ctemp7 = *(a_offset + 6);
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ctemp8 = *(a_offset + 7);
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*(b_offset + 0) = -ctemp1;
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*(b_offset + 1) = -ctemp2;
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*(b_offset + 2) = -ctemp3;
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*(b_offset + 3) = -ctemp4;
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b_offset += m * 4;
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*(b_offset + 0) = -ctemp5;
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*(b_offset + 1) = -ctemp6;
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*(b_offset + 2) = -ctemp7;
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*(b_offset + 3) = -ctemp8;
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b_offset += m * 4;
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a_offset += 8;
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i --;
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} while(i > 0);
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}
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if (n & 2){
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ctemp1 = *(a_offset + 0);
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ctemp2 = *(a_offset + 1);
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ctemp3 = *(a_offset + 2);
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ctemp4 = *(a_offset + 3);
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*(b_offset + 0) = -ctemp1;
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*(b_offset + 1) = -ctemp2;
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*(b_offset + 2) = -ctemp3;
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*(b_offset + 3) = -ctemp4;
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b_offset += m * 4;
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a_offset += 4;
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}
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if (n & 1){
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ctemp1 = *(a_offset + 0);
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ctemp2 = *(a_offset + 1);
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*(b_offset2 + 0) = -ctemp1;
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*(b_offset2 + 1) = -ctemp2;
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}
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}
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return 0;
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}
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