1 /* blas/source_gemm_c.h
3 * Copyright (C) 2001, 2007 Brian Gough
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 int conjF, conjG, TransF, TransG;
27 const BASE alpha_real = CONST_REAL0(alpha);
28 const BASE alpha_imag = CONST_IMAG0(alpha);
30 const BASE beta_real = CONST_REAL0(beta);
31 const BASE beta_imag = CONST_IMAG0(beta);
33 if ((alpha_real == 0.0 && alpha_imag == 0.0)
34 && (beta_real == 1.0 && beta_imag == 0.0))
37 if (Order == CblasRowMajor) {
42 conjF = (TransA == CblasConjTrans) ? -1 : 1;
43 TransF = (TransA == CblasNoTrans) ? CblasNoTrans : CblasTrans;
46 conjG = (TransB == CblasConjTrans) ? -1 : 1;
47 TransG = (TransB == CblasNoTrans) ? CblasNoTrans : CblasTrans;
53 conjF = (TransB == CblasConjTrans) ? -1 : 1;
54 TransF = (TransB == CblasNoTrans) ? CblasNoTrans : CblasTrans;
57 conjG = (TransA == CblasConjTrans) ? -1 : 1;
58 TransG = (TransA == CblasNoTrans) ? CblasNoTrans : CblasTrans;
61 /* form y := beta*y */
62 if (beta_real == 0.0 && beta_imag == 0.0) {
63 for (i = 0; i < n1; i++) {
64 for (j = 0; j < n2; j++) {
65 REAL(C, ldc * i + j) = 0.0;
66 IMAG(C, ldc * i + j) = 0.0;
69 } else if (!(beta_real == 1.0 && beta_imag == 0.0)) {
70 for (i = 0; i < n1; i++) {
71 for (j = 0; j < n2; j++) {
72 const BASE Cij_real = REAL(C, ldc * i + j);
73 const BASE Cij_imag = IMAG(C, ldc * i + j);
74 REAL(C, ldc * i + j) = beta_real * Cij_real - beta_imag * Cij_imag;
75 IMAG(C, ldc * i + j) = beta_real * Cij_imag + beta_imag * Cij_real;
80 if (alpha_real == 0.0 && alpha_imag == 0.0)
83 if (TransF == CblasNoTrans && TransG == CblasNoTrans) {
85 /* form C := alpha*A*B + C */
87 for (k = 0; k < K; k++) {
88 for (i = 0; i < n1; i++) {
89 const BASE Fik_real = CONST_REAL(F, ldf * i + k);
90 const BASE Fik_imag = conjF * CONST_IMAG(F, ldf * i + k);
91 const BASE temp_real = alpha_real * Fik_real - alpha_imag * Fik_imag;
92 const BASE temp_imag = alpha_real * Fik_imag + alpha_imag * Fik_real;
93 if (!(temp_real == 0.0 && temp_imag == 0.0)) {
94 for (j = 0; j < n2; j++) {
95 const BASE Gkj_real = CONST_REAL(G, ldg * k + j);
96 const BASE Gkj_imag = conjG * CONST_IMAG(G, ldg * k + j);
97 REAL(C, ldc * i + j) += temp_real * Gkj_real - temp_imag * Gkj_imag;
98 IMAG(C, ldc * i + j) += temp_real * Gkj_imag + temp_imag * Gkj_real;
104 } else if (TransF == CblasNoTrans && TransG == CblasTrans) {
106 /* form C := alpha*A*B' + C */
108 for (i = 0; i < n1; i++) {
109 for (j = 0; j < n2; j++) {
110 BASE temp_real = 0.0;
111 BASE temp_imag = 0.0;
112 for (k = 0; k < K; k++) {
113 const BASE Fik_real = CONST_REAL(F, ldf * i + k);
114 const BASE Fik_imag = conjF * CONST_IMAG(F, ldf * i + k);
115 const BASE Gjk_real = CONST_REAL(G, ldg * j + k);
116 const BASE Gjk_imag = conjG * CONST_IMAG(G, ldg * j + k);
117 temp_real += Fik_real * Gjk_real - Fik_imag * Gjk_imag;
118 temp_imag += Fik_real * Gjk_imag + Fik_imag * Gjk_real;
120 REAL(C, ldc * i + j) += alpha_real * temp_real - alpha_imag * temp_imag;
121 IMAG(C, ldc * i + j) += alpha_real * temp_imag + alpha_imag * temp_real;
125 } else if (TransF == CblasTrans && TransG == CblasNoTrans) {
127 for (k = 0; k < K; k++) {
128 for (i = 0; i < n1; i++) {
129 const BASE Fki_real = CONST_REAL(F, ldf * k + i);
130 const BASE Fki_imag = conjF * CONST_IMAG(F, ldf * k + i);
131 const BASE temp_real = alpha_real * Fki_real - alpha_imag * Fki_imag;
132 const BASE temp_imag = alpha_real * Fki_imag + alpha_imag * Fki_real;
133 if (!(temp_real == 0.0 && temp_imag == 0.0)) {
134 for (j = 0; j < n2; j++) {
135 const BASE Gkj_real = CONST_REAL(G, ldg * k + j);
136 const BASE Gkj_imag = conjG * CONST_IMAG(G, ldg * k + j);
137 REAL(C, ldc * i + j) += temp_real * Gkj_real - temp_imag * Gkj_imag;
138 IMAG(C, ldc * i + j) += temp_real * Gkj_imag + temp_imag * Gkj_real;
144 } else if (TransF == CblasTrans && TransG == CblasTrans) {
146 for (i = 0; i < n1; i++) {
147 for (j = 0; j < n2; j++) {
148 BASE temp_real = 0.0;
149 BASE temp_imag = 0.0;
150 for (k = 0; k < K; k++) {
151 const BASE Fki_real = CONST_REAL(F, ldf * k + i);
152 const BASE Fki_imag = conjF * CONST_IMAG(F, ldf * k + i);
153 const BASE Gjk_real = CONST_REAL(G, ldg * j + k);
154 const BASE Gjk_imag = conjG * CONST_IMAG(G, ldg * j + k);
156 temp_real += Fki_real * Gjk_real - Fki_imag * Gjk_imag;
157 temp_imag += Fki_real * Gjk_imag + Fki_imag * Gjk_real;
159 REAL(C, ldc * i + j) += alpha_real * temp_real - alpha_imag * temp_imag;
160 IMAG(C, ldc * i + j) += alpha_real * temp_imag + alpha_imag * temp_real;
165 BLAS_ERROR("unrecognized operation");