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- /* blas/source_gemm_r.h
- *
- * Copyright (C) 2001, 2007 Brian Gough
- *
- * 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, k;
- INDEX n1, n2;
- INDEX ldf, ldg;
- int TransF, TransG;
- const BASE *F, *G;
- if (alpha == 0.0 && beta == 1.0)
- return;
- if (Order == CblasRowMajor) {
- n1 = M;
- n2 = N;
- F = A;
- ldf = lda;
- TransF = (TransA == CblasConjTrans) ? CblasTrans : TransA;
- G = B;
- ldg = ldb;
- TransG = (TransB == CblasConjTrans) ? CblasTrans : TransB;
- } else {
- n1 = N;
- n2 = M;
- F = B;
- ldf = ldb;
- TransF = (TransB == CblasConjTrans) ? CblasTrans : TransB;
- G = A;
- ldg = lda;
- TransG = (TransA == CblasConjTrans) ? CblasTrans : TransA;
- }
- /* form y := beta*y */
- if (beta == 0.0) {
- for (i = 0; i < n1; i++) {
- for (j = 0; j < n2; j++) {
- C[ldc * i + j] = 0.0;
- }
- }
- } else if (beta != 1.0) {
- for (i = 0; i < n1; i++) {
- for (j = 0; j < n2; j++) {
- C[ldc * i + j] *= beta;
- }
- }
- }
- if (alpha == 0.0)
- return;
- if (TransF == CblasNoTrans && TransG == CblasNoTrans) {
- /* form C := alpha*A*B + C */
- for (k = 0; k < K; k++) {
- for (i = 0; i < n1; i++) {
- const BASE temp = alpha * F[ldf * i + k];
- if (temp != 0.0) {
- for (j = 0; j < n2; j++) {
- C[ldc * i + j] += temp * G[ldg * k + j];
- }
- }
- }
- }
- } else if (TransF == CblasNoTrans && TransG == CblasTrans) {
- /* form C := alpha*A*B' + C */
- for (i = 0; i < n1; i++) {
- for (j = 0; j < n2; j++) {
- BASE temp = 0.0;
- for (k = 0; k < K; k++) {
- temp += F[ldf * i + k] * G[ldg * j + k];
- }
- C[ldc * i + j] += alpha * temp;
- }
- }
- } else if (TransF == CblasTrans && TransG == CblasNoTrans) {
- for (k = 0; k < K; k++) {
- for (i = 0; i < n1; i++) {
- const BASE temp = alpha * F[ldf * k + i];
- if (temp != 0.0) {
- for (j = 0; j < n2; j++) {
- C[ldc * i + j] += temp * G[ldg * k + j];
- }
- }
- }
- }
- } else if (TransF == CblasTrans && TransG == CblasTrans) {
- for (i = 0; i < n1; i++) {
- for (j = 0; j < n2; j++) {
- BASE temp = 0.0;
- for (k = 0; k < K; k++) {
- temp += F[ldf * k + i] * G[ldg * j + k];
- }
- C[ldc * i + j] += alpha * temp;
- }
- }
- } else {
- BLAS_ERROR("unrecognized operation");
- }
- }
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