110 lines
3.9 KiB
C
110 lines
3.9 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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const static FLOAT dm1 = -1.;
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#undef GEMV_UNROLL
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#define GEMV_UNROLL DTB_ENTRIES
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int CNAME(BLASLONG m, FLOAT *a, BLASLONG lda, FLOAT *b, BLASLONG incb, void *buffer){
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BLASLONG i, is, min_i;
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FLOAT *gemvbuffer = (FLOAT *)buffer;
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FLOAT *B = b;
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if (incb != 1) {
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B = buffer;
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gemvbuffer = (FLOAT *)(((BLASLONG)buffer + m * sizeof(FLOAT) + 4095) & ~4095);
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COPY_K(m, b, incb, buffer, 1);
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}
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for (is = 0; is < m; is += GEMV_UNROLL){
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min_i = MIN(m - is, GEMV_UNROLL);
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#ifdef TRANSA
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if (is > 0){
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GEMV_T(is, min_i, 0, dm1,
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a + is * lda , lda,
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B, 1,
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B + is, 1, gemvbuffer);
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}
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#endif
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for (i = 0; i < min_i; i++) {
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FLOAT *AA = a + is + (i + is) * lda;
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FLOAT *BB = B + is;
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#ifdef TRANSA
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if (i > 0) BB[i] -= DOTU_K(i, AA, 1, BB, 1);
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#endif
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#ifndef UNIT
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BB[i] /= AA[i];
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#endif
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#ifndef TRANSA
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if (i < min_i - 1) {
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AXPYU_K(min_i - i - 1 , 0, 0, - BB[i],
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AA + i + 1, 1, BB + i + 1, 1, NULL, 0);
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}
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#endif
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}
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#ifndef TRANSA
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if (m - is > min_i){
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GEMV_N(m - is - min_i, min_i, 0, dm1,
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a + is + min_i + is * lda, lda,
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B + is, 1,
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B + (is + min_i), 1, gemvbuffer);
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}
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#endif
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}
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if (incb != 1) {
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COPY_K(m, buffer, 1, b, incb);
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}
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return 0;
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}
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