| /* blas/source_gemm_c.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 conjF, conjG, TransF, TransG; |
| const BASE *F, *G; |
| |
| const BASE alpha_real = CONST_REAL0(alpha); |
| const BASE alpha_imag = CONST_IMAG0(alpha); |
| |
| const BASE beta_real = CONST_REAL0(beta); |
| const BASE beta_imag = CONST_IMAG0(beta); |
| |
| if ((alpha_real == 0.0 && alpha_imag == 0.0) |
| && (beta_real == 1.0 && beta_imag == 0.0)) |
| return; |
| |
| if (Order == CblasRowMajor) { |
| n1 = M; |
| n2 = N; |
| F = (const BASE *)A; |
| ldf = lda; |
| conjF = (TransA == CblasConjTrans) ? -1 : 1; |
| TransF = (TransA == CblasNoTrans) ? CblasNoTrans : CblasTrans; |
| G = (const BASE *)B; |
| ldg = ldb; |
| conjG = (TransB == CblasConjTrans) ? -1 : 1; |
| TransG = (TransB == CblasNoTrans) ? CblasNoTrans : CblasTrans; |
| } else { |
| n1 = N; |
| n2 = M; |
| F = (const BASE *)B; |
| ldf = ldb; |
| conjF = (TransB == CblasConjTrans) ? -1 : 1; |
| TransF = (TransB == CblasNoTrans) ? CblasNoTrans : CblasTrans; |
| G = (const BASE *)A; |
| ldg = lda; |
| conjG = (TransA == CblasConjTrans) ? -1 : 1; |
| TransG = (TransA == CblasNoTrans) ? CblasNoTrans : CblasTrans; |
| } |
| |
| /* form y := beta*y */ |
| if (beta_real == 0.0 && beta_imag == 0.0) { |
| for (i = 0; i < n1; i++) { |
| for (j = 0; j < n2; j++) { |
| REAL(C, ldc * i + j) = 0.0; |
| IMAG(C, ldc * i + j) = 0.0; |
| } |
| } |
| } else if (!(beta_real == 1.0 && beta_imag == 0.0)) { |
| for (i = 0; i < n1; i++) { |
| for (j = 0; j < n2; j++) { |
| const BASE Cij_real = REAL(C, ldc * i + j); |
| const BASE Cij_imag = IMAG(C, ldc * i + j); |
| REAL(C, ldc * i + j) = beta_real * Cij_real - beta_imag * Cij_imag; |
| IMAG(C, ldc * i + j) = beta_real * Cij_imag + beta_imag * Cij_real; |
| } |
| } |
| } |
| |
| if (alpha_real == 0.0 && alpha_imag == 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 Fik_real = CONST_REAL(F, ldf * i + k); |
| const BASE Fik_imag = conjF * CONST_IMAG(F, ldf * i + k); |
| const BASE temp_real = alpha_real * Fik_real - alpha_imag * Fik_imag; |
| const BASE temp_imag = alpha_real * Fik_imag + alpha_imag * Fik_real; |
| if (!(temp_real == 0.0 && temp_imag == 0.0)) { |
| for (j = 0; j < n2; j++) { |
| const BASE Gkj_real = CONST_REAL(G, ldg * k + j); |
| const BASE Gkj_imag = conjG * CONST_IMAG(G, ldg * k + j); |
| REAL(C, ldc * i + j) += temp_real * Gkj_real - temp_imag * Gkj_imag; |
| IMAG(C, ldc * i + j) += temp_real * Gkj_imag + temp_imag * Gkj_real; |
| } |
| } |
| } |
| } |
| |
| } 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_real = 0.0; |
| BASE temp_imag = 0.0; |
| for (k = 0; k < K; k++) { |
| const BASE Fik_real = CONST_REAL(F, ldf * i + k); |
| const BASE Fik_imag = conjF * CONST_IMAG(F, ldf * i + k); |
| const BASE Gjk_real = CONST_REAL(G, ldg * j + k); |
| const BASE Gjk_imag = conjG * CONST_IMAG(G, ldg * j + k); |
| temp_real += Fik_real * Gjk_real - Fik_imag * Gjk_imag; |
| temp_imag += Fik_real * Gjk_imag + Fik_imag * Gjk_real; |
| } |
| REAL(C, ldc * i + j) += alpha_real * temp_real - alpha_imag * temp_imag; |
| IMAG(C, ldc * i + j) += alpha_real * temp_imag + alpha_imag * temp_real; |
| } |
| } |
| |
| } else if (TransF == CblasTrans && TransG == CblasNoTrans) { |
| |
| for (k = 0; k < K; k++) { |
| for (i = 0; i < n1; i++) { |
| const BASE Fki_real = CONST_REAL(F, ldf * k + i); |
| const BASE Fki_imag = conjF * CONST_IMAG(F, ldf * k + i); |
| const BASE temp_real = alpha_real * Fki_real - alpha_imag * Fki_imag; |
| const BASE temp_imag = alpha_real * Fki_imag + alpha_imag * Fki_real; |
| if (!(temp_real == 0.0 && temp_imag == 0.0)) { |
| for (j = 0; j < n2; j++) { |
| const BASE Gkj_real = CONST_REAL(G, ldg * k + j); |
| const BASE Gkj_imag = conjG * CONST_IMAG(G, ldg * k + j); |
| REAL(C, ldc * i + j) += temp_real * Gkj_real - temp_imag * Gkj_imag; |
| IMAG(C, ldc * i + j) += temp_real * Gkj_imag + temp_imag * Gkj_real; |
| } |
| } |
| } |
| } |
| |
| } else if (TransF == CblasTrans && TransG == CblasTrans) { |
| |
| for (i = 0; i < n1; i++) { |
| for (j = 0; j < n2; j++) { |
| BASE temp_real = 0.0; |
| BASE temp_imag = 0.0; |
| for (k = 0; k < K; k++) { |
| const BASE Fki_real = CONST_REAL(F, ldf * k + i); |
| const BASE Fki_imag = conjF * CONST_IMAG(F, ldf * k + i); |
| const BASE Gjk_real = CONST_REAL(G, ldg * j + k); |
| const BASE Gjk_imag = conjG * CONST_IMAG(G, ldg * j + k); |
| |
| temp_real += Fki_real * Gjk_real - Fki_imag * Gjk_imag; |
| temp_imag += Fki_real * Gjk_imag + Fki_imag * Gjk_real; |
| } |
| REAL(C, ldc * i + j) += alpha_real * temp_real - alpha_imag * temp_imag; |
| IMAG(C, ldc * i + j) += alpha_real * temp_imag + alpha_imag * temp_real; |
| } |
| } |
| |
| } else { |
| BLAS_ERROR("unrecognized operation"); |
| } |
| } |