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/* blas/source_syrk_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;
int uplo, trans;
if (alpha == 0.0 && beta == 1.0)
return;
if (Order == CblasRowMajor) {
uplo = Uplo;
trans = (Trans == CblasConjTrans) ? CblasTrans : Trans;
} else {
uplo = (Uplo == CblasUpper) ? CblasLower : CblasUpper;
if (Trans == CblasTrans || Trans == CblasConjTrans) {
trans = CblasNoTrans;
} else {
trans = CblasTrans;
}
}
/* form y := beta*y */
if (beta == 0.0) {
if (uplo == CblasUpper) {
for (i = 0; i < N; i++) {
for (j = i; j < N; j++) {
C[ldc * i + j] = 0.0;
}
}
} else {
for (i = 0; i < N; i++) {
for (j = 0; j <= i; j++) {
C[ldc * i + j] = 0.0;
}
}
}
} else if (beta != 1.0) {
if (uplo == CblasUpper) {
for (i = 0; i < N; i++) {
for (j = i; j < N; j++) {
C[ldc * i + j] *= beta;
}
}
} else {
for (i = 0; i < N; i++) {
for (j = 0; j <= i; j++) {
C[ldc * i + j] *= beta;
}
}
}
}
if (alpha == 0.0)
return;
if (uplo == CblasUpper && trans == CblasNoTrans) {
for (i = 0; i < N; i++) {
for (j = i; j < N; j++) {
BASE temp = 0.0;
for (k = 0; k < K; k++) {
temp += A[i * lda + k] * A[j * lda + k];
}
C[i * ldc + j] += alpha * temp;
}
}
} else if (uplo == CblasUpper && trans == CblasTrans) {
for (i = 0; i < N; i++) {
for (j = i; j < N; j++) {
BASE temp = 0.0;
for (k = 0; k < K; k++) {
temp += A[k * lda + i] * A[k * lda + j];
}
C[i * ldc + j] += alpha * temp;
}
}
} else if (uplo == CblasLower && trans == CblasNoTrans) {
for (i = 0; i < N; i++) {
for (j = 0; j <= i; j++) {
BASE temp = 0.0;
for (k = 0; k < K; k++) {
temp += A[i * lda + k] * A[j * lda + k];
}
C[i * ldc + j] += alpha * temp;
}
}
} else if (uplo == CblasLower && trans == CblasTrans) {
for (i = 0; i < N; i++) {
for (j = 0; j <= i; j++) {
BASE temp = 0.0;
for (k = 0; k < K; k++) {
temp += A[k * lda + i] * A[k * lda + j];
}
C[i * ldc + j] += alpha * temp;
}
}
} else {
BLAS_ERROR("unrecognized operation");
}
}
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