98 lines
3.8 KiB
C
98 lines
3.8 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 <ctype.h>
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#include "common.h"
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int CNAME(BLASLONG n, BLASLONG k, FLOAT alpha,
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FLOAT *a, BLASLONG lda,
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FLOAT *x, BLASLONG incx, FLOAT *y, BLASLONG incy, void *buffer){
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BLASLONG i, length;
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FLOAT *X = x;
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FLOAT *Y = y;
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FLOAT *sbmvbuffer = (FLOAT *)buffer;
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FLOAT *bufferY = sbmvbuffer;
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FLOAT *bufferX = sbmvbuffer;
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if (incy != 1) {
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Y = bufferY;
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bufferX = (FLOAT *)(((BLASLONG)bufferY + n * sizeof(FLOAT) + 4095) & ~4095);
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sbmvbuffer = bufferX;
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COPY_K(n, y, incy, Y, 1);
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}
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if (incx != 1) {
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X = bufferX;
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sbmvbuffer = (FLOAT *)(((BLASLONG)bufferX + n * sizeof(FLOAT) + 4095) & ~4095);
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COPY_K(n, x, incx, X, 1);
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}
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for (i = 0; i < n; i++) {
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#ifndef LOWER
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length = i;
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if (length > k) length = k;
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AXPYU_K(length + 1, 0, 0,
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alpha * X[i],
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a + k - length, 1, Y + i - length, 1, NULL, 0);
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Y[i] += alpha * DOTU_K(length, a + k - length, 1, X + i - length, 1);
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#else
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length = k;
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if (n - i - 1 < k) length = n - i - 1;
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AXPYU_K(length + 1, 0, 0,
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alpha * X[i],
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a, 1, Y + i, 1, NULL, 0);
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Y[i] += alpha * DOTU_K(length, a + 1, 1, X + i + 1, 1);
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#endif
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a += lda;
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}
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if (incy != 1) {
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COPY_K(n, Y, 1, y, incy);
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}
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return 0;
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}
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