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// $Source$
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// ************************************************************************
//
// NOX: An Object-Oriented Nonlinear Solver Package
// Copyright (2002) Sandia Corporation
//
// LOCA: Library of Continuation Algorithms Package
// Copyright (2005) Sandia Corporation
//
// Under terms of Contract DE-AC04-94AL85000, there is a non-exclusive
// license for use of this work by or on behalf of the U.S. Government.
//
// This library is free software; you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as
// published by the Free Software Foundation; either version 2.1 of the
// License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
// USA
//
// Questions? Contact Roger Pawlowski (rppawlo@sandia.gov) or
// Eric Phipps (etphipp@sandia.gov), Sandia National Laboratories.
// ************************************************************************
// CVS Information
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#ifndef NOX_SOLVER_GENERIC_H
#define NOX_SOLVER_GENERIC_H
#include "NOX_StatusTest_Generic.H" // for NOX::StatusTest::StatusType
// Forward declarations
namespace Teuchos {
class ParameterList;
}
namespace NOX {
namespace Abstract {
class Vector;
class Group;
}
}
#include "Teuchos_RCP.hpp"
namespace NOX {
/*!
\brief %NOX nonlinear solvers namespace.
The Generic class spells out the interface. The Manager class can
instantiate any other concrete implementation. The remaining classes
are concrete implementations.
*/
namespace Solver {
/*!
\brief %Abstract nonlinear solver method interface.
Defines the type of access methods into the iterative nonlinear solvers.
<ul>
<li>Instantiate or reset() the solver.
<li>Find the solution via solve() or perform a single iterations via iterate().
<li>Get information about the current solver state via
getSolutionGroup(), getPreviousSolutionGroup(),
getNumIterations(), and getList() --- particularily
useful for NOX::StatusTest methods.
<li>Get the current status of the solver via getStatus().
</ul>
*/
class Generic {
public:
//! Constructor (does nothing)
Generic() {};
//! Destructor (does nothing)
virtual ~Generic() {};
//! Resets the solver and sets a new initial guess.
virtual void reset(const NOX::Abstract::Vector& initial_guess) = 0;
//! Resets the solver, sets a new status test, and sets a new initial guess.
virtual void reset(const NOX::Abstract::Vector& initial_guess,
const Teuchos::RCP<NOX::StatusTest::Generic>& test) = 0;
//! Check current convergence and failure status.
virtual NOX::StatusTest::StatusType getStatus() = 0;
//! Do one nonlinear step in the iteration sequence and return status.
virtual NOX::StatusTest::StatusType step() = 0;
/*!
\brief Solve the nonlinear problem and return final status.
By "solve", we call iterate() until the NOX::StatusTest value is
either NOX::StatusTest::Converged or NOX::StatusTest::Failed.
*/
virtual NOX::StatusTest::StatusType solve() = 0;
//! Return a reference to the current solution group.
virtual const NOX::Abstract::Group& getSolutionGroup() const = 0;
//! Return a reference to the previous solution group.
virtual const NOX::Abstract::Group& getPreviousSolutionGroup() const = 0;
//! Get number of iterations.
virtual int getNumIterations() const = 0;
//! Return a refernece to the solver parameters.
virtual const Teuchos::ParameterList& getList() const = 0;
};
} // namespace Solver
} // namespace NOX
#endif
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