1 /* blas/source_symm_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.
25 const BASE alpha_real = CONST_REAL0(alpha);
26 const BASE alpha_imag = CONST_IMAG0(alpha);
27 const BASE beta_real = CONST_REAL0(beta);
28 const BASE beta_imag = CONST_IMAG0(beta);
30 if ((alpha_real == 0.0 && alpha_imag == 0.0)
31 && (beta_real == 1.0 && beta_imag == 0.0))
34 if (Order == CblasRowMajor) {
42 uplo = (Uplo == CblasUpper) ? CblasLower : CblasUpper;
43 side = (Side == CblasLeft) ? CblasRight : CblasLeft;
46 /* form y := beta*y */
47 if (beta_real == 0.0 && beta_imag == 0.0) {
48 for (i = 0; i < n1; i++) {
49 for (j = 0; j < n2; j++) {
50 REAL(C, ldc * i + j) = 0.0;
51 IMAG(C, ldc * i + j) = 0.0;
54 } else if (!(beta_real == 1.0 && beta_imag == 0.0)) {
55 for (i = 0; i < n1; i++) {
56 for (j = 0; j < n2; j++) {
57 const BASE Cij_real = REAL(C, ldc * i + j);
58 const BASE Cij_imag = IMAG(C, ldc * i + j);
59 REAL(C, ldc * i + j) = beta_real * Cij_real - beta_imag * Cij_imag;
60 IMAG(C, ldc * i + j) = beta_real * Cij_imag + beta_imag * Cij_real;
65 if (alpha_real == 0.0 && alpha_imag == 0.0)
68 if (side == CblasLeft && uplo == CblasUpper) {
70 /* form C := alpha*A*B + C */
72 for (i = 0; i < n1; i++) {
73 for (j = 0; j < n2; j++) {
74 const BASE Bij_real = CONST_REAL(B, ldb * i + j);
75 const BASE Bij_imag = CONST_IMAG(B, ldb * i + j);
76 const BASE temp1_real = alpha_real * Bij_real - alpha_imag * Bij_imag;
77 const BASE temp1_imag = alpha_real * Bij_imag + alpha_imag * Bij_real;
78 BASE temp2_real = 0.0;
79 BASE temp2_imag = 0.0;
81 const BASE Aii_real = CONST_REAL(A, i * lda + i);
82 const BASE Aii_imag = CONST_IMAG(A, i * lda + i);
83 REAL(C, i * ldc + j) += temp1_real * Aii_real - temp1_imag * Aii_imag;
84 IMAG(C, i * ldc + j) += temp1_real * Aii_imag + temp1_imag * Aii_real;
86 for (k = i + 1; k < n1; k++) {
87 const BASE Aik_real = CONST_REAL(A, i * lda + k);
88 const BASE Aik_imag = CONST_IMAG(A, i * lda + k);
89 const BASE Bkj_real = CONST_REAL(B, ldb * k + j);
90 const BASE Bkj_imag = CONST_IMAG(B, ldb * k + j);
91 REAL(C, k * ldc + j) += Aik_real * temp1_real - Aik_imag * temp1_imag;
92 IMAG(C, k * ldc + j) += Aik_real * temp1_imag + Aik_imag * temp1_real;
93 temp2_real += Aik_real * Bkj_real - Aik_imag * Bkj_imag;
94 temp2_imag += Aik_real * Bkj_imag + Aik_imag * Bkj_real;
96 REAL(C, i * ldc + j) += alpha_real * temp2_real - alpha_imag * temp2_imag;
97 IMAG(C, i * ldc + j) += alpha_real * temp2_imag + alpha_imag * temp2_real;
101 } else if (side == CblasLeft && uplo == CblasLower) {
103 /* form C := alpha*A*B + C */
105 for (i = 0; i < n1; i++) {
106 for (j = 0; j < n2; j++) {
107 const BASE Bij_real = CONST_REAL(B, ldb * i + j);
108 const BASE Bij_imag = CONST_IMAG(B, ldb * i + j);
109 const BASE temp1_real = alpha_real * Bij_real - alpha_imag * Bij_imag;
110 const BASE temp1_imag = alpha_real * Bij_imag + alpha_imag * Bij_real;
111 BASE temp2_real = 0.0;
112 BASE temp2_imag = 0.0;
113 for (k = 0; k < i; k++) {
114 const BASE Aik_real = CONST_REAL(A, i * lda + k);
115 const BASE Aik_imag = CONST_IMAG(A, i * lda + k);
116 const BASE Bkj_real = CONST_REAL(B, ldb * k + j);
117 const BASE Bkj_imag = CONST_IMAG(B, ldb * k + j);
118 REAL(C, k * ldc + j) += Aik_real * temp1_real - Aik_imag * temp1_imag;
119 IMAG(C, k * ldc + j) += Aik_real * temp1_imag + Aik_imag * temp1_real;
120 temp2_real += Aik_real * Bkj_real - Aik_imag * Bkj_imag;
121 temp2_imag += Aik_real * Bkj_imag + Aik_imag * Bkj_real;
124 const BASE Aii_real = CONST_REAL(A, i * lda + i);
125 const BASE Aii_imag = CONST_IMAG(A, i * lda + i);
126 REAL(C, i * ldc + j) += temp1_real * Aii_real - temp1_imag * Aii_imag;
127 IMAG(C, i * ldc + j) += temp1_real * Aii_imag + temp1_imag * Aii_real;
129 REAL(C, i * ldc + j) += alpha_real * temp2_real - alpha_imag * temp2_imag;
130 IMAG(C, i * ldc + j) += alpha_real * temp2_imag + alpha_imag * temp2_real;
134 } else if (side == CblasRight && uplo == CblasUpper) {
136 /* form C := alpha*B*A + C */
138 for (i = 0; i < n1; i++) {
139 for (j = 0; j < n2; j++) {
140 const BASE Bij_real = CONST_REAL(B, ldb * i + j);
141 const BASE Bij_imag = CONST_IMAG(B, ldb * i + j);
142 const BASE temp1_real = alpha_real * Bij_real - alpha_imag * Bij_imag;
143 const BASE temp1_imag = alpha_real * Bij_imag + alpha_imag * Bij_real;
144 BASE temp2_real = 0.0;
145 BASE temp2_imag = 0.0;
147 const BASE Ajj_real = CONST_REAL(A, j * lda + j);
148 const BASE Ajj_imag = CONST_IMAG(A, j * lda + j);
149 REAL(C, i * ldc + j) += temp1_real * Ajj_real - temp1_imag * Ajj_imag;
150 IMAG(C, i * ldc + j) += temp1_real * Ajj_imag + temp1_imag * Ajj_real;
152 for (k = j + 1; k < n2; k++) {
153 const BASE Ajk_real = CONST_REAL(A, j * lda + k);
154 const BASE Ajk_imag = CONST_IMAG(A, j * lda + k);
155 const BASE Bik_real = CONST_REAL(B, ldb * i + k);
156 const BASE Bik_imag = CONST_IMAG(B, ldb * i + k);
157 REAL(C, i * ldc + k) += temp1_real * Ajk_real - temp1_imag * Ajk_imag;
158 IMAG(C, i * ldc + k) += temp1_real * Ajk_imag + temp1_imag * Ajk_real;
159 temp2_real += Bik_real * Ajk_real - Bik_imag * Ajk_imag;
160 temp2_imag += Bik_real * Ajk_imag + Bik_imag * Ajk_real;
162 REAL(C, i * ldc + j) += alpha_real * temp2_real - alpha_imag * temp2_imag;
163 IMAG(C, i * ldc + j) += alpha_real * temp2_imag + alpha_imag * temp2_real;
167 } else if (side == CblasRight && uplo == CblasLower) {
169 /* form C := alpha*B*A + C */
171 for (i = 0; i < n1; i++) {
172 for (j = 0; j < n2; j++) {
173 const BASE Bij_real = CONST_REAL(B, ldb * i + j);
174 const BASE Bij_imag = CONST_IMAG(B, ldb * i + j);
175 const BASE temp1_real = alpha_real * Bij_real - alpha_imag * Bij_imag;
176 const BASE temp1_imag = alpha_real * Bij_imag + alpha_imag * Bij_real;
177 BASE temp2_real = 0.0;
178 BASE temp2_imag = 0.0;
179 for (k = 0; k < j; k++) {
180 const BASE Ajk_real = CONST_REAL(A, j * lda + k);
181 const BASE Ajk_imag = CONST_IMAG(A, j * lda + k);
182 const BASE Bik_real = CONST_REAL(B, ldb * i + k);
183 const BASE Bik_imag = CONST_IMAG(B, ldb * i + k);
184 REAL(C, i * ldc + k) += temp1_real * Ajk_real - temp1_imag * Ajk_imag;
185 IMAG(C, i * ldc + k) += temp1_real * Ajk_imag + temp1_imag * Ajk_real;
186 temp2_real += Bik_real * Ajk_real - Bik_imag * Ajk_imag;
187 temp2_imag += Bik_real * Ajk_imag + Bik_imag * Ajk_real;
190 const BASE Ajj_real = CONST_REAL(A, j * lda + j);
191 const BASE Ajj_imag = CONST_IMAG(A, j * lda + j);
192 REAL(C, i * ldc + j) += temp1_real * Ajj_real - temp1_imag * Ajj_imag;
193 IMAG(C, i * ldc + j) += temp1_real * Ajj_imag + temp1_imag * Ajj_real;
195 REAL(C, i * ldc + j) += alpha_real * temp2_real - alpha_imag * temp2_imag;
196 IMAG(C, i * ldc + j) += alpha_real * temp2_imag + alpha_imag * temp2_real;
201 BLAS_ERROR("unrecognized operation");