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/* blas/source_her.h
*
* Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman
*
* 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.
*/
{
const int conj = (order == CblasColMajor) ? -1 : 1;
INDEX i, j;
if (alpha == 0.0)
return;
if ((order == CblasRowMajor && Uplo == CblasUpper)
|| (order == CblasColMajor && Uplo == CblasLower)) {
INDEX ix = OFFSET(N, incX);
for (i = 0; i < N; i++) {
const BASE tmp_real = alpha * CONST_REAL(X, ix);
const BASE tmp_imag = alpha * conj * CONST_IMAG(X, ix);
INDEX jx = ix;
{
const BASE X_real = CONST_REAL(X, jx);
const BASE X_imag = -conj * CONST_IMAG(X, jx);
REAL(A, lda * i + i) += X_real * tmp_real - X_imag * tmp_imag;
IMAG(A, lda * i + i) = 0;
jx += incX;
}
for (j = i + 1; j < N; j++) {
const BASE X_real = CONST_REAL(X, jx);
const BASE X_imag = -conj * CONST_IMAG(X, jx);
REAL(A, lda * i + j) += X_real * tmp_real - X_imag * tmp_imag;
IMAG(A, lda * i + j) += X_imag * tmp_real + X_real * tmp_imag;
jx += incX;
}
ix += incX;
}
} else if ((order == CblasRowMajor && Uplo == CblasLower)
|| (order == CblasColMajor && Uplo == CblasUpper)) {
INDEX ix = OFFSET(N, incX);
for (i = 0; i < N; i++) {
const BASE tmp_real = alpha * CONST_REAL(X, ix);
const BASE tmp_imag = alpha * conj * CONST_IMAG(X, ix);
INDEX jx = OFFSET(N, incX);
for (j = 0; j < i; j++) {
const BASE X_real = CONST_REAL(X, jx);
const BASE X_imag = -conj * CONST_IMAG(X, jx);
REAL(A, lda * i + j) += X_real * tmp_real - X_imag * tmp_imag;
IMAG(A, lda * i + j) += X_imag * tmp_real + X_real * tmp_imag;
jx += incX;
}
{
const BASE X_real = CONST_REAL(X, jx);
const BASE X_imag = -conj * CONST_IMAG(X, jx);
REAL(A, lda * i + i) += X_real * tmp_real - X_imag * tmp_imag;
IMAG(A, lda * i + i) = 0;
jx += incX;
}
ix += incX;
}
} else {
BLAS_ERROR("unrecognized operation");
}
}
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