/usr/include/trilinos/MueLu_SteepestDescentSolver_decl.hpp is in libtrilinos-muelu-dev 12.4.2-2.
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//
// ***********************************************************************
//
// MueLu: A package for multigrid based preconditioning
// Copyright 2012 Sandia Corporation
//
// Under the terms of Contract DE-AC04-94AL85000 with Sandia Corporation,
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// @HEADER
#ifndef MUELU_STEEPESTDESCENTSOLVER_DECL_HPP
#define MUELU_STEEPESTDESCENTSOLVER_DECL_HPP
#include <Xpetra_Matrix_fwd.hpp>
#include <Xpetra_MultiVector_fwd.hpp>
#include <Xpetra_CrsMatrixWrap_fwd.hpp>
#include <Xpetra_CrsMatrixFactory_fwd.hpp>
#include "MueLu_ConfigDefs.hpp"
#include "MueLu_SolverBase.hpp"
#include "MueLu_Constraint_fwd.hpp"
#include "MueLu_Utilities_fwd.hpp"
namespace MueLu {
/*!
@class SteepestDescentSolver class.
@brief Implements steepest descent algorithm for energy-minimization
*/
template <class Scalar = double, class LocalOrdinal = int, class GlobalOrdinal = LocalOrdinal, class Node = KokkosClassic::DefaultNode::DefaultNodeType>
class SteepestDescentSolver : public SolverBase<Scalar, LocalOrdinal, GlobalOrdinal, Node> {
#undef MUELU_STEEPESTDESCENTSOLVER_SHORT
#include "MueLu_UseShortNames.hpp"
public:
//! @name Constructors / destructors
//@{
/*! Constructor
\param Its -- Number of performed iterations
\param StepLength -- The modifier of the step length
*/
SteepestDescentSolver(size_t Its, SC StepLength = Teuchos::ScalarTraits<Scalar>::one());
//@}
//! @name Iterate methods.
//@{
//! Iterate
void Iterate(const Matrix& A, const Constraint& C, const Matrix& P0, RCP<Matrix>& P) const;
//@}
private:
size_t nIts_; //!< Number of performed iterations
SC stepLength_; //!< Modifier of the step length
};
} // namespace MueLu
#define MUELU_STEEPESTDESCENTSOLVER_SHORT
#endif // MUELU_STEEPESTDESCENTSOLVER_DECL_HPP
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