| /* |
| Copyright (c) 2011, Intel Corporation. All rights reserved. |
| |
| Redistribution and use in source and binary forms, with or without modification, |
| are permitted provided that the following conditions are met: |
| |
| * Redistributions of source code must retain the above copyright notice, this |
| list of conditions and the following disclaimer. |
| * Redistributions in binary form must reproduce the above copyright notice, |
| this list of conditions and the following disclaimer in the documentation |
| and/or other materials provided with the distribution. |
| * Neither the name of Intel Corporation nor the names of its contributors may |
| be used to endorse or promote products derived from this software without |
| specific prior written permission. |
| |
| THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND |
| ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
| WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
| DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR |
| ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON |
| ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| |
| ******************************************************************************** |
| * Content : Eigen bindings to BLAS F77 |
| * General matrix-matrix product functionality based on ?GEMM. |
| ******************************************************************************** |
| */ |
| |
| #ifndef EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H |
| #define EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H |
| |
| // IWYU pragma: private |
| #include "../InternalHeaderCheck.h" |
| |
| namespace Eigen { |
| |
| namespace internal { |
| |
| /********************************************************************** |
| * This file implements general matrix-matrix multiplication using BLAS |
| * gemm function via partial specialization of |
| * general_matrix_matrix_product::run(..) method for float, double, |
| * std::complex<float> and std::complex<double> types |
| **********************************************************************/ |
| |
| // gemm specialization |
| |
| #define GEMM_SPECIALIZATION(EIGTYPE, EIGPREFIX, BLASTYPE, BLASFUNC) \ |
| template <typename Index, int LhsStorageOrder, bool ConjugateLhs, int RhsStorageOrder, bool ConjugateRhs> \ |
| struct general_matrix_matrix_product<Index, EIGTYPE, LhsStorageOrder, ConjugateLhs, EIGTYPE, RhsStorageOrder, \ |
| ConjugateRhs, ColMajor, 1> { \ |
| typedef gebp_traits<EIGTYPE, EIGTYPE> Traits; \ |
| \ |
| static void run(Index rows, Index cols, Index depth, const EIGTYPE* _lhs, Index lhsStride, const EIGTYPE* _rhs, \ |
| Index rhsStride, EIGTYPE* res, Index resIncr, Index resStride, EIGTYPE alpha, \ |
| level3_blocking<EIGTYPE, EIGTYPE>& /*blocking*/, GemmParallelInfo<Index>* /*info = 0*/) { \ |
| using std::conj; \ |
| if (rows == 0 || cols == 0 || depth == 0) return; \ |
| EIGEN_ONLY_USED_FOR_DEBUG(resIncr); \ |
| eigen_assert(resIncr == 1); \ |
| char transa, transb; \ |
| BlasIndex m, n, k, lda, ldb, ldc; \ |
| const EIGTYPE *a, *b; \ |
| EIGTYPE beta(1); \ |
| MatrixX##EIGPREFIX a_tmp, b_tmp; \ |
| \ |
| /* Set transpose options */ \ |
| transa = (LhsStorageOrder == RowMajor) ? ((ConjugateLhs) ? 'C' : 'T') : 'N'; \ |
| transb = (RhsStorageOrder == RowMajor) ? ((ConjugateRhs) ? 'C' : 'T') : 'N'; \ |
| \ |
| /* Set m, n, k */ \ |
| m = convert_index<BlasIndex>(rows); \ |
| n = convert_index<BlasIndex>(cols); \ |
| k = convert_index<BlasIndex>(depth); \ |
| \ |
| /* Set lda, ldb, ldc */ \ |
| lda = convert_index<BlasIndex>(lhsStride); \ |
| ldb = convert_index<BlasIndex>(rhsStride); \ |
| ldc = convert_index<BlasIndex>(resStride); \ |
| \ |
| /* Set a, b, c */ \ |
| if ((LhsStorageOrder == ColMajor) && (ConjugateLhs)) { \ |
| Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > lhs(_lhs, m, k, OuterStride<>(lhsStride)); \ |
| a_tmp = lhs.conjugate(); \ |
| a = a_tmp.data(); \ |
| lda = convert_index<BlasIndex>(a_tmp.outerStride()); \ |
| } else \ |
| a = _lhs; \ |
| \ |
| if ((RhsStorageOrder == ColMajor) && (ConjugateRhs)) { \ |
| Map<const MatrixX##EIGPREFIX, 0, OuterStride<> > rhs(_rhs, k, n, OuterStride<>(rhsStride)); \ |
| b_tmp = rhs.conjugate(); \ |
| b = b_tmp.data(); \ |
| ldb = convert_index<BlasIndex>(b_tmp.outerStride()); \ |
| } else \ |
| b = _rhs; \ |
| \ |
| BLASFUNC(&transa, &transb, &m, &n, &k, (const BLASTYPE*)&numext::real_ref(alpha), (const BLASTYPE*)a, &lda, \ |
| (const BLASTYPE*)b, &ldb, (const BLASTYPE*)&numext::real_ref(beta), (BLASTYPE*)res, &ldc); \ |
| } \ |
| }; |
| |
| #ifdef EIGEN_USE_MKL |
| GEMM_SPECIALIZATION(double, d, double, dgemm) |
| GEMM_SPECIALIZATION(float, f, float, sgemm) |
| GEMM_SPECIALIZATION(dcomplex, cd, MKL_Complex16, zgemm) |
| GEMM_SPECIALIZATION(scomplex, cf, MKL_Complex8, cgemm) |
| #else |
| GEMM_SPECIALIZATION(double, d, double, dgemm_) |
| GEMM_SPECIALIZATION(float, f, float, sgemm_) |
| GEMM_SPECIALIZATION(dcomplex, cd, double, zgemm_) |
| GEMM_SPECIALIZATION(scomplex, cf, float, cgemm_) |
| #endif |
| |
| } // namespace internal |
| |
| } // end namespace Eigen |
| |
| #endif // EIGEN_GENERAL_MATRIX_MATRIX_BLAS_H |
