235 lines
7.7 KiB
C
235 lines
7.7 KiB
C
/***************************************************************************
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Copyright (c) 2021, The OpenBLAS Project
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are
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met:
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1. Redistributions of source code must retain the above copyright
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notice, this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in
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the documentation and/or other materials provided with the
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distribution.
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3. Neither the name of the OpenBLAS project nor the names of
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its contributors may be used to endorse or promote products
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derived from this software without specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE OPENBLAS PROJECT OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*****************************************************************************/
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#include "common.h"
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int CNAME(BLASLONG rows, BLASLONG cols, FLOAT alpha, FLOAT *a, BLASLONG lda, FLOAT *b, BLASLONG ldb)
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{
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BLASLONG i, j;
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FLOAT *a_offset, *a_offset1, *a_offset2, *a_offset3, *a_offset4;
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FLOAT *b_offset, *b_offset1, *b_offset2, *b_offset3, *b_offset4;
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if (rows <= 0) return 0;
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if (cols <= 0) return 0;
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a_offset = a;
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b_offset = b;
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i = (rows >> 2);
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if (i > 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_offset3 = a_offset2 + lda;
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a_offset4 = a_offset3 + lda;
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a_offset += 4 * lda;
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b_offset1 = b_offset;
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b_offset2 = b_offset1 + ldb;
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b_offset3 = b_offset2 + ldb;
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b_offset4 = b_offset3 + ldb;
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b_offset += 4;
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j = (cols >> 2);
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if (j > 0) {
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do {
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/* Column 1 of MAT_B */
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha; // Row 1 of MAT_A
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*(b_offset2 + 0) = *(a_offset1 + 1)*alpha;
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*(b_offset3 + 0) = *(a_offset1 + 2)*alpha;
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*(b_offset4 + 0) = *(a_offset1 + 3)*alpha;
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/* Column 2 of MAT_B */
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha; // Row 2 of MAT_A
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*(b_offset2 + 1) = *(a_offset2 + 1)*alpha;
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*(b_offset3 + 1) = *(a_offset2 + 2)*alpha;
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*(b_offset4 + 1) = *(a_offset2 + 3)*alpha;
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/* Column 3 of MAT_B */
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*(b_offset1 + 2) = *(a_offset3 + 0)*alpha; // Row 3 of MAT_A
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*(b_offset2 + 2) = *(a_offset3 + 1)*alpha;
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*(b_offset3 + 2) = *(a_offset3 + 2)*alpha;
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*(b_offset4 + 2) = *(a_offset3 + 3)*alpha;
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/* Column 4 of MAT_B */
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*(b_offset1 + 3) = *(a_offset4 + 0)*alpha; // Row 4 of MAT_A
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*(b_offset2 + 3) = *(a_offset4 + 1)*alpha;
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*(b_offset3 + 3) = *(a_offset4 + 2)*alpha;
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*(b_offset4 + 3) = *(a_offset4 + 3)*alpha;
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a_offset1 += 4;
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a_offset2 += 4;
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a_offset3 += 4;
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a_offset4 += 4;
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b_offset1 += ldb * 4;
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b_offset2 += ldb * 4;
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b_offset3 += ldb * 4;
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b_offset4 += ldb * 4;
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j--;
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} while (j > 0);
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} // if(j > 0)
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if (cols & 2) {
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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*(b_offset2 + 0) = *(a_offset1 + 1)*alpha;
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha;
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*(b_offset2 + 1) = *(a_offset2 + 1)*alpha;
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*(b_offset1 + 2) = *(a_offset3 + 0)*alpha;
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*(b_offset2 + 2) = *(a_offset3 + 1)*alpha;
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*(b_offset1 + 3) = *(a_offset4 + 0)*alpha;
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*(b_offset2 + 3) = *(a_offset4 + 1)*alpha;
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a_offset1 += 2;
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a_offset2 += 2;
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a_offset3 += 2;
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a_offset4 += 2;
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b_offset1 += ldb*2;
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}
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if (cols & 1) {
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha;
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*(b_offset1 + 2) = *(a_offset3 + 0)*alpha;
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*(b_offset1 + 3) = *(a_offset4 + 0)*alpha;
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}
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i--;
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} while (i > 0);
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}
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if (rows & 2) {
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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_offset2 = b_offset1 + ldb;
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b_offset3 = b_offset2 + ldb;
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b_offset4 = b_offset3 + ldb;
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b_offset += 2;
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j = (cols >> 2);
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if (j > 0){
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do {
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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*(b_offset2 + 0) = *(a_offset1 + 1)*alpha;
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*(b_offset3 + 0) = *(a_offset1 + 2)*alpha;
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*(b_offset4 + 0) = *(a_offset1 + 3)*alpha;
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha;
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*(b_offset2 + 1) = *(a_offset2 + 1)*alpha;
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*(b_offset3 + 1) = *(a_offset2 + 2)*alpha;
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*(b_offset4 + 1) = *(a_offset2 + 3)*alpha;
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a_offset1 += 4;
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a_offset2 += 4;
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b_offset1 += ldb * 4;
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b_offset2 += ldb * 4;
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b_offset3 += ldb * 4;
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b_offset4 += ldb * 4;
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j--;
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} while (j > 0);
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}
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if (cols & 2){
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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*(b_offset2 + 0) = *(a_offset1 + 1)*alpha;
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha;
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*(b_offset2 + 1) = *(a_offset2 + 1)*alpha;
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a_offset1 += 2;
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a_offset2 += 2;
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b_offset1 += ldb*2;
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}
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if (cols & 1){
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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*(b_offset1 + 1) = *(a_offset2 + 0)*alpha;
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}
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} // if (rows & 2)
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if (rows & 1) {
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a_offset1 = a_offset;
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a_offset += lda;
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b_offset1 = b_offset;
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b_offset2 = b_offset1 + ldb;
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b_offset3 = b_offset2 + ldb;
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b_offset4 = b_offset3 + ldb;
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j = (cols >> 2);
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if (j > 0){
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do {
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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*(b_offset2 + 0) = *(a_offset1 + 1)*alpha;
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*(b_offset3 + 0) = *(a_offset1 + 2)*alpha;
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*(b_offset4 + 0) = *(a_offset1 + 3)*alpha;
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a_offset1 += 4;
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b_offset1 += ldb * 4;
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b_offset2 += ldb * 4;
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b_offset3 += ldb * 4;
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b_offset4 += ldb * 4;
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j--;
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} while (j > 0);
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}
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if (cols & 2){
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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*(b_offset2 + 0) = *(a_offset1 + 1)*alpha;
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a_offset1 += 2;
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b_offset1 += ldb * 2;
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}
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if (cols & 1){
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*(b_offset1 + 0) = *(a_offset1 + 0)*alpha;
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}
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}
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return 0;
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}
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