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-/*
- 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 Intel(R) MKL
- * General matrix-vector product functionality based on ?GEMV.
- ********************************************************************************
-*/
-
-#ifndef EIGEN_GENERAL_MATRIX_VECTOR_MKL_H
-#define EIGEN_GENERAL_MATRIX_VECTOR_MKL_H
-
-namespace Eigen {
-
-namespace internal {
-
-/**********************************************************************
-* This file implements general matrix-vector multiplication using BLAS
-* gemv function via partial specialization of
-* general_matrix_vector_product::run(..) method for float, double,
-* std::complex<float> and std::complex<double> types
-**********************************************************************/
-
-// gemv specialization
-
-template<typename Index, typename LhsScalar, int LhsStorageOrder, bool ConjugateLhs, typename RhsScalar, bool ConjugateRhs>
-struct general_matrix_vector_product_gemv :
- general_matrix_vector_product<Index,LhsScalar,LhsStorageOrder,ConjugateLhs,RhsScalar,ConjugateRhs,BuiltIn> {};
-
-#define EIGEN_MKL_GEMV_SPECIALIZE(Scalar) \
-template<typename Index, bool ConjugateLhs, bool ConjugateRhs> \
-struct general_matrix_vector_product<Index,Scalar,ColMajor,ConjugateLhs,Scalar,ConjugateRhs,Specialized> { \
-static void run( \
- Index rows, Index cols, \
- const Scalar* lhs, Index lhsStride, \
- const Scalar* rhs, Index rhsIncr, \
- Scalar* res, Index resIncr, Scalar alpha) \
-{ \
- if (ConjugateLhs) { \
- general_matrix_vector_product<Index,Scalar,ColMajor,ConjugateLhs,Scalar,ConjugateRhs,BuiltIn>::run( \
- rows, cols, lhs, lhsStride, rhs, rhsIncr, res, resIncr, alpha); \
- } else { \
- general_matrix_vector_product_gemv<Index,Scalar,ColMajor,ConjugateLhs,Scalar,ConjugateRhs>::run( \
- rows, cols, lhs, lhsStride, rhs, rhsIncr, res, resIncr, alpha); \
- } \
-} \
-}; \
-template<typename Index, bool ConjugateLhs, bool ConjugateRhs> \
-struct general_matrix_vector_product<Index,Scalar,RowMajor,ConjugateLhs,Scalar,ConjugateRhs,Specialized> { \
-static void run( \
- Index rows, Index cols, \
- const Scalar* lhs, Index lhsStride, \
- const Scalar* rhs, Index rhsIncr, \
- Scalar* res, Index resIncr, Scalar alpha) \
-{ \
- general_matrix_vector_product_gemv<Index,Scalar,RowMajor,ConjugateLhs,Scalar,ConjugateRhs>::run( \
- rows, cols, lhs, lhsStride, rhs, rhsIncr, res, resIncr, alpha); \
-} \
-}; \
-
-EIGEN_MKL_GEMV_SPECIALIZE(double)
-EIGEN_MKL_GEMV_SPECIALIZE(float)
-EIGEN_MKL_GEMV_SPECIALIZE(dcomplex)
-EIGEN_MKL_GEMV_SPECIALIZE(scomplex)
-
-#define EIGEN_MKL_GEMV_SPECIALIZATION(EIGTYPE,MKLTYPE,MKLPREFIX) \
-template<typename Index, int LhsStorageOrder, bool ConjugateLhs, bool ConjugateRhs> \
-struct general_matrix_vector_product_gemv<Index,EIGTYPE,LhsStorageOrder,ConjugateLhs,EIGTYPE,ConjugateRhs> \
-{ \
-typedef Matrix<EIGTYPE,Dynamic,1,ColMajor> GEMVVector;\
-\
-static void run( \
- Index rows, Index cols, \
- const EIGTYPE* lhs, Index lhsStride, \
- const EIGTYPE* rhs, Index rhsIncr, \
- EIGTYPE* res, Index resIncr, EIGTYPE alpha) \
-{ \
- MKL_INT m=rows, n=cols, lda=lhsStride, incx=rhsIncr, incy=resIncr; \
- MKLTYPE alpha_, beta_; \
- const EIGTYPE *x_ptr, myone(1); \
- char trans=(LhsStorageOrder==ColMajor) ? 'N' : (ConjugateLhs) ? 'C' : 'T'; \
- if (LhsStorageOrder==RowMajor) { \
- m=cols; \
- n=rows; \
- }\
- assign_scalar_eig2mkl(alpha_, alpha); \
- assign_scalar_eig2mkl(beta_, myone); \
- GEMVVector x_tmp; \
- if (ConjugateRhs) { \
- Map<const GEMVVector, 0, InnerStride<> > map_x(rhs,cols,1,InnerStride<>(incx)); \
- x_tmp=map_x.conjugate(); \
- x_ptr=x_tmp.data(); \
- incx=1; \
- } else x_ptr=rhs; \
- MKLPREFIX##gemv(&trans, &m, &n, &alpha_, (const MKLTYPE*)lhs, &lda, (const MKLTYPE*)x_ptr, &incx, &beta_, (MKLTYPE*)res, &incy); \
-}\
-};
-
-EIGEN_MKL_GEMV_SPECIALIZATION(double, double, d)
-EIGEN_MKL_GEMV_SPECIALIZATION(float, float, s)
-EIGEN_MKL_GEMV_SPECIALIZATION(dcomplex, MKL_Complex16, z)
-EIGEN_MKL_GEMV_SPECIALIZATION(scomplex, MKL_Complex8, c)
-
-} // end namespase internal
-
-} // end namespace Eigen
-
-#endif // EIGEN_GENERAL_MATRIX_VECTOR_MKL_H