103 lines
3.7 KiB
C
103 lines
3.7 KiB
C
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/*********************************************************************/
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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, BLASLONG posX, BLASLONG posY, FLOAT *b){
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BLASLONG i, js, offset;
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FLOAT data01, data02;
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FLOAT *ao1, *ao2;
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js = (n >> 1);
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while (js > 0){
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offset = posX - posY;
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if (offset > 0) ao1 = a + posX + 0 + posY * lda; else ao1 = a + posY + (posX + 0) * lda;
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if (offset > -1) ao2 = a + posX + 1 + posY * lda; else ao2 = a + posY + (posX + 1) * lda;
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i = m;
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while (i > 0) {
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data01 = *(ao1 + 0);
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data02 = *(ao2 + 0);
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if (offset > 0) ao1 += lda; else ao1 ++;
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if (offset > -1) ao2 += lda; else ao2 ++;
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b[ 0] = data01;
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b[ 1] = data02;
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b += 2;
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offset --;
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i --;
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}
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posX += 2;
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js --;
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}
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if (n & 1) {
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offset = posX - posY;
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if (offset > 0) ao1 = a + posX + 0 + posY * lda; else ao1 = a + posY + (posX + 0) * lda;
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i = m;
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while (i > 0) {
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data01 = *(ao1 + 0);
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if (offset > 0) ao1 += lda; else ao1 ++;
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b[ 0] = data01;
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b ++;
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offset --;
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i --;
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}
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}
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return 0;
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}
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