diff options
Diffstat (limited to 'gsl-1.9/cblas/source_gemm_r.h')
-rw-r--r-- | gsl-1.9/cblas/source_gemm_r.h | 125 |
1 files changed, 125 insertions, 0 deletions
diff --git a/gsl-1.9/cblas/source_gemm_r.h b/gsl-1.9/cblas/source_gemm_r.h new file mode 100644 index 0000000..aa625dd --- /dev/null +++ b/gsl-1.9/cblas/source_gemm_r.h @@ -0,0 +1,125 @@ +/* blas/source_gemm_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; + INDEX n1, n2; + INDEX ldf, ldg; + int TransF, TransG; + const BASE *F, *G; + + if (alpha == 0.0 && beta == 1.0) + return; + + if (Order == CblasRowMajor) { + n1 = M; + n2 = N; + F = A; + ldf = lda; + TransF = (TransA == CblasConjTrans) ? CblasTrans : TransA; + G = B; + ldg = ldb; + TransG = (TransB == CblasConjTrans) ? CblasTrans : TransB; + } else { + n1 = N; + n2 = M; + F = B; + ldf = ldb; + TransF = (TransB == CblasConjTrans) ? CblasTrans : TransB; + G = A; + ldg = lda; + TransG = (TransA == CblasConjTrans) ? CblasTrans : TransA; + } + + /* form y := beta*y */ + if (beta == 0.0) { + for (i = 0; i < n1; i++) { + for (j = 0; j < n2; j++) { + C[ldc * i + j] = 0.0; + } + } + } else if (beta != 1.0) { + for (i = 0; i < n1; i++) { + for (j = 0; j < n2; j++) { + C[ldc * i + j] *= beta; + } + } + } + + if (alpha == 0.0) + return; + + if (TransF == CblasNoTrans && TransG == CblasNoTrans) { + + /* form C := alpha*A*B + C */ + + for (k = 0; k < K; k++) { + for (i = 0; i < n1; i++) { + const BASE temp = alpha * F[ldf * i + k]; + if (temp != 0.0) { + for (j = 0; j < n2; j++) { + C[ldc * i + j] += temp * G[ldg * k + j]; + } + } + } + } + + } else if (TransF == CblasNoTrans && TransG == CblasTrans) { + + /* form C := alpha*A*B' + C */ + + for (i = 0; i < n1; i++) { + for (j = 0; j < n2; j++) { + BASE temp = 0.0; + for (k = 0; k < K; k++) { + temp += F[ldf * i + k] * G[ldg * j + k]; + } + C[ldc * i + j] += alpha * temp; + } + } + + } else if (TransF == CblasTrans && TransG == CblasNoTrans) { + + for (k = 0; k < K; k++) { + for (i = 0; i < n1; i++) { + const BASE temp = alpha * F[ldf * k + i]; + if (temp != 0.0) { + for (j = 0; j < n2; j++) { + C[ldc * i + j] += temp * G[ldg * k + j]; + } + } + } + } + + } else if (TransF == CblasTrans && TransG == CblasTrans) { + + for (i = 0; i < n1; i++) { + for (j = 0; j < n2; j++) { + BASE temp = 0.0; + for (k = 0; k < K; k++) { + temp += F[ldf * k + i] * G[ldg * j + k]; + } + C[ldc * i + j] += alpha * temp; + } + } + + } else { + BLAS_ERROR("unrecognized operation"); + } +} |