diff options
Diffstat (limited to 'gsl-1.9/cblas/source_syrk_c.h')
| -rw-r--r-- | gsl-1.9/cblas/source_syrk_c.h | 164 |
1 files changed, 164 insertions, 0 deletions
diff --git a/gsl-1.9/cblas/source_syrk_c.h b/gsl-1.9/cblas/source_syrk_c.h new file mode 100644 index 0000000..97dcc20 --- /dev/null +++ b/gsl-1.9/cblas/source_syrk_c.h @@ -0,0 +1,164 @@ +/* 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; + + 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) { + uplo = Uplo; + /* FIXME: original blas does not make distinction between Trans and ConjTrans?? */ + trans = (Trans == CblasNoTrans) ? CblasNoTrans : CblasTrans; + } else { + uplo = (Uplo == CblasUpper) ? CblasLower : CblasUpper; + trans = (Trans == CblasNoTrans) ? CblasTrans : CblasNoTrans; + } + + /* form y := beta*y */ + if (beta_real == 0.0 && beta_imag == 0.0) { + if (uplo == CblasUpper) { + for (i = 0; i < N; i++) { + for (j = i; j < N; j++) { + REAL(C, ldc * i + j) = 0.0; + IMAG(C, ldc * i + j) = 0.0; + } + } + } else { + for (i = 0; i < N; i++) { + for (j = 0; j <= i; 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)) { + if (uplo == CblasUpper) { + for (i = 0; i < N; i++) { + for (j = i; j < N; 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; + } + } + } else { + for (i = 0; i < N; i++) { + for (j = 0; j <= i; 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 (uplo == CblasUpper && trans == CblasNoTrans) { + + for (i = 0; i < N; i++) { + for (j = i; j < N; j++) { + BASE temp_real = 0.0; + BASE temp_imag = 0.0; + for (k = 0; k < K; k++) { + const BASE Aik_real = CONST_REAL(A, i * lda + k); + const BASE Aik_imag = CONST_IMAG(A, i * lda + k); + const BASE Ajk_real = CONST_REAL(A, j * lda + k); + const BASE Ajk_imag = CONST_IMAG(A, j * lda + k); + temp_real += Aik_real * Ajk_real - Aik_imag * Ajk_imag; + temp_imag += Aik_real * Ajk_imag + Aik_imag * Ajk_real; + } + REAL(C, i * ldc + j) += alpha_real * temp_real - alpha_imag * temp_imag; + IMAG(C, i * ldc + j) += alpha_real * temp_imag + alpha_imag * temp_real; + } + } + + } else if (uplo == CblasUpper && trans == CblasTrans) { + + for (i = 0; i < N; i++) { + for (j = i; j < N; j++) { + BASE temp_real = 0.0; + BASE temp_imag = 0.0; + for (k = 0; k < K; k++) { + const BASE Aki_real = CONST_REAL(A, k * lda + i); + const BASE Aki_imag = CONST_IMAG(A, k * lda + i); + const BASE Akj_real = CONST_REAL(A, k * lda + j); + const BASE Akj_imag = CONST_IMAG(A, k * lda + j); + temp_real += Aki_real * Akj_real - Aki_imag * Akj_imag; + temp_imag += Aki_real * Akj_imag + Aki_imag * Akj_real; + } + REAL(C, i * ldc + j) += alpha_real * temp_real - alpha_imag * temp_imag; + IMAG(C, i * ldc + j) += alpha_real * temp_imag + alpha_imag * temp_real; + } + } + + } else if (uplo == CblasLower && trans == CblasNoTrans) { + + for (i = 0; i < N; i++) { + for (j = 0; j <= i; j++) { + BASE temp_real = 0.0; + BASE temp_imag = 0.0; + for (k = 0; k < K; k++) { + const BASE Aik_real = CONST_REAL(A, i * lda + k); + const BASE Aik_imag = CONST_IMAG(A, i * lda + k); + const BASE Ajk_real = CONST_REAL(A, j * lda + k); + const BASE Ajk_imag = CONST_IMAG(A, j * lda + k); + temp_real += Aik_real * Ajk_real - Aik_imag * Ajk_imag; + temp_imag += Aik_real * Ajk_imag + Aik_imag * Ajk_real; + } + REAL(C, i * ldc + j) += alpha_real * temp_real - alpha_imag * temp_imag; + IMAG(C, i * ldc + j) += alpha_real * temp_imag + alpha_imag * temp_real; + } + } + + } else if (uplo == CblasLower && trans == CblasTrans) { + + for (i = 0; i < N; i++) { + for (j = 0; j <= i; j++) { + BASE temp_real = 0.0; + BASE temp_imag = 0.0; + for (k = 0; k < K; k++) { + const BASE Aki_real = CONST_REAL(A, k * lda + i); + const BASE Aki_imag = CONST_IMAG(A, k * lda + i); + const BASE Akj_real = CONST_REAL(A, k * lda + j); + const BASE Akj_imag = CONST_IMAG(A, k * lda + j); + temp_real += Aki_real * Akj_real - Aki_imag * Akj_imag; + temp_imag += Aki_real * Akj_imag + Aki_imag * Akj_real; + } + REAL(C, i * ldc + j) += alpha_real * temp_real - alpha_imag * temp_imag; + IMAG(C, i * ldc + j) += alpha_real * temp_imag + alpha_imag * temp_real; + } + } + + } else { + BLAS_ERROR("unrecognized operation"); + } +} |