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/*
* Copyright (c) 2009, 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_SYR2_TCC #define CXXBLAS_LEVEL2_SYR2_TCC 1 #include <complex> #include <cxxblas/cxxblas.h> namespace cxxblas { template <typename IndexType, typename ALPHA, typename VX, typename VY, typename MA> void syr2_generic(StorageOrder order, StorageUpLo upLo, IndexType n, const ALPHA &alpha, const VX *x, IndexType incX, const VY *y, IndexType incY, MA *A, IndexType ldA) { if (order==ColMajor) { upLo = (upLo==Upper) ? Lower : Upper; syr2_generic(RowMajor, upLo, n, alpha, y, incY, x, incX, A, ldA); return; } #ifdef CXXBLAS_USE_XERBLA // insert error check here #endif if (upLo==Upper) { for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) { axpy_generic(n-i, alpha*x[iX], y+iY, incY, A+i*(ldA+1), IndexType(1)); axpy_generic(n-i, alpha*y[iY], x+iX, incX, A+i*(ldA+1), IndexType(1)); } } else { for (IndexType i=0, iX=0, iY=0; i<n; ++i, iX+=incX, iY+=incY) { axpy_generic(i+1, alpha*x[iX], y, incY, A+i*ldA, IndexType(1)); axpy_generic(i+1, alpha*y[iY], x, incX, A+i*ldA, IndexType(1)); } } } template <typename IndexType, typename ALPHA, typename VX, typename VY, typename MA> void syr2(StorageOrder order, StorageUpLo upLo, IndexType n, const ALPHA &alpha, const VX *x, IndexType incX, const VY *y, IndexType incY, MA *A, IndexType ldA) { CXXBLAS_DEBUG_OUT("syr2_generic"); if (incX<0) { x -= incX*(n-1); } if (incY<0) { y -= incY*(n-1); } syr2_generic(order, upLo, n, alpha, x, incX, y, incY, A, ldA); } #ifdef HAVE_CBLAS // ssyr2 template <typename IndexType> typename If<IndexType>::isBlasCompatibleInteger syr(StorageOrder order, StorageUpLo upLo, IndexType n, float alpha, const float *x, IndexType incX, const float *y, IndexType incY, float *A, IndexType ldA) { CXXBLAS_DEBUG_OUT("[" BLAS_IMPL "] cblas_ssyr2"); cblas_ssyr2(CBLAS::getCblasType(order), CBLAS::getCblasType(upLo), n, alpha, x, incX, y, incY, A, ldA); } // dsyr2 template <typename IndexType> typename If<IndexType>::isBlasCompatibleInteger syr2(StorageOrder order, StorageUpLo upLo, IndexType n, double alpha, const double *x, IndexType incX, const double *y, IndexType incY, double *A, IndexType ldA) { CXXBLAS_DEBUG_OUT("[" BLAS_IMPL "] cblas_dsyr2"); cblas_dsyr2(CBLAS::getCblasType(order), CBLAS::getCblasType(upLo), n, alpha, x, incX, y, incY, A, ldA); } #endif // HAVE_CBLAS } // namespace cxxblas #endif // CXXBLAS_LEVEL2_SYR2_TCC |