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/*
* Copyright (c) 2012, Michael Lehn, Klaus Pototzky * * 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. */ /* Based on * SUBROUTINE ZHPTRF( UPLO, N, AP, IPIV, INFO ) * * -- LAPACK routine (version 3.2) -- * -- LAPACK is a software package provided by Univ. of Tennessee, -- * -- Univ. of California Berkeley, Univ. of Colorado Denver and NAG Ltd..-- * November 2006 */ #ifndef FLENS_LAPACK_HP_TRF_TCC #define FLENS_LAPACK_HP_TRF_TCC 1 #include <algorithm> #include <flens/blas/blas.h> #include <flens/lapack/lapack.h> namespace flens { namespace lapack { //== interface for native lapack =============================================== #ifdef USE_CXXLAPACK namespace external { //-- (hp)trf [complex variant] ------------------------------------------------- template <typename MA, typename VP> typename HpMatrix<MA>::IndexType trf_impl(HpMatrix<MA> &A, DenseVector<VP> &piv) { typedef typename HpMatrix<MA>::IndexType IndexType; return cxxlapack::hptrf<IndexType>(getF77Char(A.upLo()), A.dim(), A.data(), piv.data()); } } // namespace external #endif // USE_CXXLAPACK //== public interface ========================================================== #ifdef USE_CXXLAPACK //-- (hp)trf [complex variant] ------------------------------------------------- template <typename MA, typename VPIV> typename RestrictTo<IsHpMatrix<MA>::value && IsIntegerDenseVector<VPIV>::value, typename RemoveRef<MA>::Type::IndexType>::Type trf(MA &&A, VPIV &&piv) { // // Remove references from rvalue types // typedef typename RemoveRef<MA>::Type MatrixA; typedef typename MatrixA::IndexType IndexType; if (piv.length()<A.dim()) { piv.resize(A.dim()); } # ifndef NDEBUG // // Test the input parameters // ASSERT(A.firstIndex()==1); ASSERT((piv.inc()>0 && piv.firstIndex()==1) || (piv.inc()<0 && piv.firstIndex()==A.dim())); # endif // // Call implementation // IndexType info = external::trf_impl(A, piv); return info; } #endif // USE_CXXLAPACK } } // namespace lapack, flens #endif // FLENS_LAPACK_HP_TRF_TCC |