GlobalLinSysDirect.cpp

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///////////////////////////////////////////////////////////////////////////////
//
// File: GlobalLinSysDirect.cpp
//
// For more information, please see: http://www.nektar.info
//
// The MIT License
//
// Copyright (c) 2006 Division of Applied Mathematics, Brown University (USA),
// Department of Aeronautics, Imperial College London (UK), and Scientific
// Computing and Imaging Institute, University of Utah (USA).
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the "Software"),
// to deal in the Software without restriction, including without limitation
// the rights to use, copy, modify, merge, publish, distribute, sublicense,
// and/or sell copies of the Software, and to permit persons to whom the
// Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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//
// Description: GlobalLinSysDirect definition
//
///////////////////////////////////////////////////////////////////////////////
 
#include <boost/core/ignore_unused.hpp>
 
#include <MultiRegions/GlobalLinSysDirect.h>
 
namespace Nektar
{
namespace MultiRegions
{
/**
 * @class GlobalLinSysDirect
 *
 * Solves a linear system using direct methods.
 */
 
//        GlobalLinSysDirect::GlobalLinSysDirect(void)
//        {
//        }
 
/// Constructor for full direct matrix solve.
GlobalLinSysDirect::GlobalLinSysDirect(
    const GlobalLinSysKey &pKey, const std::weak_ptr<ExpList> &pExp,
    const std::shared_ptr<AssemblyMap> &pLocToGloMap)
    : GlobalLinSys(pKey, pExp, pLocToGloMap)
{
}
 
GlobalLinSysDirect::~GlobalLinSysDirect()
{
}
 
/// Solve the linear system for given input and output vectors.
void GlobalLinSysDirect::v_SolveLinearSystem(
    const int pNumRows, const Array<OneD, const NekDouble> &pInput,
    Array<OneD, NekDouble> &pOutput, const AssemblyMapSharedPtr &pLocToGloMap,
    const int pNumDir)
{
    boost::ignore_unused(pLocToGloMap);
 
    const int nHomDofs = pNumRows - pNumDir;
 
    DNekVec Vin(nHomDofs, pInput + pNumDir);
 
    Array<OneD, NekDouble> tmp = pOutput + pNumDir;
    DNekVec Vout(nHomDofs, tmp, eWrapper);
 
    m_linSys->Solve(Vin, Vout);
}
} // namespace MultiRegions
} // namespace Nektar