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/*
* Copyright 2008-2009 NVIDIA Corporation
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/*! \file cg_m.h
* \brief Multi-mass Conjugate Gradient (CG-M) method
*/
#pragma once
#include <cusp/detail/config.h>
namespace cusp
{
namespace krylov
{
/*! \addtogroup iterative_solvers Iterative Solvers
* \addtogroup krylov_methods Krylov Methods
* \ingroup iterative_solvers
* \{
*/
/*! \p cg_m : Multi-mass Conjugate Gradient method
*
* Solves the symmetric, positive-definited linear system (A+\sigma) x = b
* for some set of constant shifts \p sigma for the price of the smallest shift
* using the default monitor
*
* \param A matrix of the linear system
* \param x solutions of the system
* \param b right-hand side of the linear system
* \param sigma array of shifts
*
*/
template <class LinearOperator,
class VectorType1,
class VectorType2,
class VectorType3>
void cg_m(LinearOperator& A,
VectorType1& x,
VectorType2& b,
VectorType3& sigma);
/*! \p cg_m : Multi-mass Conjugate Gradient method
*
* Solves the symmetric, positive-definited linear system (A+\sigma) x = b
* for some set of constant shifts \p sigma for the price of the smallest shift
*
* \param A matrix of the linear system
* \param x solutions of the system
* \param b right-hand side of the linear system
* \param sigma array of shifts
* \param monitor monitors interation and determines stoppoing conditions
*
*/
template <class LinearOperator,
class VectorType1,
class VectorType2,
class VectorType3,
class Monitor>
void cg_m(LinearOperator& A,
VectorType1& x,
VectorType2& b,
VectorType3& sigma,
Monitor& monitor);
/*! \}
*/
} // end namespace krylov
} // end namespace cusp
#include <cusp/krylov/detail/cg_m.inl>
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