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/*
* Copyright (c) 2010, Michael Lehn * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1) Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2) 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. * 3) Neither the name of the FLENS development group 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. */ #ifndef CXXBLAS_LEVEL2_HEMV_TCC #define CXXBLAS_LEVEL2_HEMV_TCC 1 #include <cxxblas/cxxblas.h> namespace cxxblas { template <typename IndexType, typename ALPHA, typename MA, typename VX, typename BETA, typename VY> void hemv_generic(StorageOrder order, StorageUpLo upLo, Transpose conjugateA, IndexType n, const ALPHA &alpha, const MA *A, IndexType ldA, const VX *x, IndexType incX, const BETA &beta, VY *y, IndexType incY) { if (order==ColMajor) { upLo = (upLo==Upper) ? Lower : Upper; conjugateA = Transpose(conjugateA^Conj); } scal_generic(n, beta, y, incY); if (upLo==Upper) { if (conjugateA==Conj) { for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) { y[iY] += alpha*cxxblas::real(A[i*ldA+i]) * x[iX]; VY _y = VY(0); dot_generic(n-i-1, A+i*ldA+i+1, IndexType(1), x+iX+incX, incX, _y); y[iY] += alpha*_y; axpy_generic(n-i-1, alpha*x[iX], A+i*ldA+i+1, IndexType(1), y+iY+incY, incY); } } else { for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) { y[iY] += alpha*cxxblas::real(A[i*ldA+i]) * x[iX]; VY _y = VY(0); dotu_generic(n-i-1, A+i*ldA+i+1, IndexType(1), x+iX+incX, incX, _y); y[iY] += alpha*_y; acxpy_generic(n-i-1, alpha*x[iX], A+i*ldA+i+1, IndexType(1), y+iY+incY, incY); } } } else { if (conjugateA==Conj) { for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) { y[iY] += alpha*cxxblas::real(A[i*ldA+i]) * x[iX]; VY _y = VY(0); dot_generic(i, A+i*ldA, IndexType(1), x, incX, _y); y[iY] += alpha*_y; axpy_generic(i, alpha*x[iX], A+i*ldA, IndexType(1), y, incY); } } else { for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) { y[iY] += alpha*cxxblas::real(A[i*ldA+i]) * x[iX]; VY _y = VY(0); dotu_generic(i, A+i*ldA, IndexType(1), x, incX, _y); y[iY] += alpha*_y; acxpy_generic(i, alpha*x[iX], A+i*ldA, IndexType(1), y, incY); } } } } //------------------------------------------------------------------------------ template <typename IndexType, typename ALPHA, typename MA, typename VX, typename BETA, typename VY> void hemv(StorageOrder order, StorageUpLo upLo, IndexType n, const ALPHA &alpha, const MA *A, IndexType ldA, const VX *x, IndexType incX, const BETA &beta, VY *y, IndexType incY) { CXXBLAS_DEBUG_OUT("hemv_generic"); if (incX<0) { x -= incX*(n-1); } if (incY<0) { y -= incY*(n-1); } hemv_generic(order, upLo, NoTrans, n, alpha, A, ldA, x, incX, beta, y, incY); } #ifdef HAVE_CBLAS // chemv template <typename IndexType> typename If<IndexType>::isBlasCompatibleInteger hemv(StorageOrder order, StorageUpLo upLo, IndexType n, const ComplexFloat &alpha, const ComplexFloat *A, IndexType ldA, const ComplexFloat *x, IndexType incX, const ComplexFloat &beta, ComplexFloat *y, IndexType incY) { CXXBLAS_DEBUG_OUT("[" BLAS_IMPL "] cblas_chemv"); cblas_chemv(CBLAS::getCblasType(order), CBLAS::getCblasType(upLo), n, reinterpret_cast<const float *>(&alpha), reinterpret_cast<const float *>(A), ldA, reinterpret_cast<const float *>(x), incX, reinterpret_cast<const float *>(&beta), reinterpret_cast<float *>(y), incY); } // zhemv template <typename IndexType> typename If<IndexType>::isBlasCompatibleInteger hemv(StorageOrder order, StorageUpLo upLo, IndexType n, const ComplexDouble &alpha, const ComplexDouble *A, IndexType ldA, const ComplexDouble *x, IndexType incX, const ComplexDouble &beta, ComplexDouble *y, IndexType incY) { CXXBLAS_DEBUG_OUT("[" BLAS_IMPL "] cblas_zhemv"); cblas_zhemv(CBLAS::getCblasType(order), CBLAS::getCblasType(upLo), n, reinterpret_cast<const double *>(&alpha), reinterpret_cast<const double *>(A), ldA, reinterpret_cast<const double *>(x), incX, reinterpret_cast<const double *>(&beta), reinterpret_cast<double *>(y), incY); } #endif // HAVE_CBLAS } // namespace cxxblas #endif // CXXBLAS_LEVEL2_HEMV_TCC |