1 /* blas/source_gemv_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.
24 const int Trans = (TransA != CblasConjTrans) ? TransA : CblasTrans;
29 if (alpha == 0.0 && beta == 1.0)
32 if (Trans == CblasNoTrans) {
40 /* form y := beta*y */
42 INDEX iy = OFFSET(lenY, incY);
43 for (i = 0; i < lenY; i++) {
47 } else if (beta != 1.0) {
48 INDEX iy = OFFSET(lenY, incY);
49 for (i = 0; i < lenY; i++) {
58 if ((order == CblasRowMajor && Trans == CblasNoTrans)
59 || (order == CblasColMajor && Trans == CblasTrans)) {
60 /* form y := alpha*A*x + y */
61 INDEX iy = OFFSET(lenY, incY);
62 for (i = 0; i < lenY; i++) {
64 INDEX ix = OFFSET(lenX, incX);
65 for (j = 0; j < lenX; j++) {
66 temp += X[ix] * A[lda * i + j];
69 Y[iy] += alpha * temp;
72 } else if ((order == CblasRowMajor && Trans == CblasTrans)
73 || (order == CblasColMajor && Trans == CblasNoTrans)) {
74 /* form y := alpha*A'*x + y */
75 INDEX ix = OFFSET(lenX, incX);
76 for (j = 0; j < lenX; j++) {
77 const BASE temp = alpha * X[ix];
79 INDEX iy = OFFSET(lenY, incY);
80 for (i = 0; i < lenY; i++) {
81 Y[iy] += temp * A[lda * j + i];
88 BLAS_ERROR("unrecognized operation");