lanczos.h

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/*
 *  Copyright 2008-2014 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.
 */
 
#pragma once
 
#include <cusp/detail/config.h>
 
#include <cusp/eigen/lanczos_options.h>
 
namespace cusp
{
namespace eigen
{
 
/* \cond */
template <typename MatrixType,
          typename Array1d>
void lanczos(const MatrixType& A,
                   Array1d& eigVals);
 
template <typename MatrixType,
          typename Array1d,
          typename Array2d>
void lanczos(const MatrixType& A,
                   Array1d& eigVals,
                   Array2d& eigVecs);
/* \endcond */
 
template <typename LinearOperator,
          typename Array1d,
          typename Array2d,
          typename LanczosOptions>
void lanczos(const LinearOperator& A,
             Array1d& eigVals,
             Array2d& eigVecs,
             LanczosOptions& options);
 
} // end namespace eigen
} // end namespace cusp
 
#include <cusp/eigen/detail/lanczos.inl>