1 /* blas/source_axpy_r.h
3 * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License as published by
7 * the Free Software Foundation; either version 3 of the License, or (at
8 * your option) any later version.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License for more details.
15 * You should have received a copy of the GNU General Public License
16 * along with this program; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
27 if (incX == 1 && incY == 1) {
28 const INDEX m = N % 4;
30 for (i = 0; i < m; i++) {
34 for (i = m; i + 3 < N; i += 4) {
36 Y[i + 1] += alpha * X[i + 1];
37 Y[i + 2] += alpha * X[i + 2];
38 Y[i + 3] += alpha * X[i + 3];
41 INDEX ix = OFFSET(N, incX);
42 INDEX iy = OFFSET(N, incY);
44 for (i = 0; i < N; i++) {
45 Y[iy] += alpha * X[ix];