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- /* blas/source_spr2.h
- *
- * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 3 of the License, or (at
- * your option) any later version.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
- */
- {
- INDEX i, j;
- if (N == 0)
- return;
- if (alpha == 0.0)
- return;
- if ((order == CblasRowMajor && Uplo == CblasUpper)
- || (order == CblasColMajor && Uplo == CblasLower)) {
- INDEX ix = OFFSET(N, incX);
- INDEX iy = OFFSET(N, incY);
- for (i = 0; i < N; i++) {
- const BASE tmp1 = alpha * X[ix];
- const BASE tmp2 = alpha * Y[iy];
- INDEX jx = ix;
- INDEX jy = iy;
- for (j = i; j < N; j++) {
- Ap[TPUP(N, i, j)] += tmp1 * Y[jy] + tmp2 * X[jx];
- jx += incX;
- jy += incY;
- }
- ix += incX;
- iy += incY;
- }
- } else if ((order == CblasRowMajor && Uplo == CblasLower)
- || (order == CblasColMajor && Uplo == CblasUpper)) {
- INDEX ix = OFFSET(N, incX);
- INDEX iy = OFFSET(N, incY);
- for (i = 0; i < N; i++) {
- const BASE tmp1 = alpha * X[ix];
- const BASE tmp2 = alpha * Y[iy];
- INDEX jx = OFFSET(N, incX);
- INDEX jy = OFFSET(N, incY);
- for (j = 0; j <= i; j++) {
- Ap[TPLO(N, i, j)] += tmp1 * Y[jy] + tmp2 * X[jx];
- jx += incX;
- jy += incY;
- }
- ix += incX;
- iy += incY;
- }
- } else {
- BLAS_ERROR("unrecognized operation");
- }
- }
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