| /* blas/source_gemm_r.h |
| * |
| * Copyright (C) 2001 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 2 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"); |
| } |
| } |