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// ************************************************************************
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// Intrepid Package
// Copyright (2007) Sandia Corporation
//
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// 1. Redistributions of source code must retain the above copyright
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//
// 2. Redistributions in binary form must reproduce the above copyright
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// 3. Neither the name of the Corporation nor the names of the
// contributors may be used to endorse or promote products derived from
// this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY SANDIA CORPORATION "AS IS" AND ANY
// EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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// Denis Ridzal (dridzal@sandia.gov), or
// Kara Peterson (kjpeter@sandia.gov)
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// @HEADER
/** \file Intrepid_AdaptiveSparseGridInterface.hpp
\brief Header file for the Intrepid::AdaptiveSparseGridInterface class.
\author Created by D. Kouri and D. Ridzal.
*/
#ifndef INTREPID_ADAPTIVESPARSEGRIDINTERFACE_HPP
#define INTREPID_ADAPTIVESPARSEGRIDINTERFACE_HPP
#include "Intrepid_CubatureTensorSorted.hpp"
namespace Intrepid {
/** \class Intrepid::AdaptiveSparseGrid
\brief Builds general adaptive sparse grid rules (Gerstner and Griebel)
using the 1D cubature rules in the Intrepid::CubatureLineSorted
class.
*/
template<class Scalar, class UserVector>
class AdaptiveSparseGridInterface {
protected:
/** \brief The dimension of the integration domain.
*/
int dimension_;
/** \brief The maximum allowable level of quadrature.
*/
int maxLevel_;
/** \brief The initial contribution to the integral.
*/
Scalar initialDiff_;
/** \brief Whether or not to normalize the weights.
*/
bool isNormalized_;
/** \brief The user defined 1D cubature rules.
*/
std::vector<EIntrepidBurkardt> rule1D_;
/** \brief The user defined 1D growth rules.
*/
std::vector<EIntrepidGrowth> growth1D_;
public:
/** \brief Destructor.
*/
virtual ~AdaptiveSparseGridInterface() {};
/** \brief Constructor starts with index [1,...,1].
\param dimension [in] - Dimension of integration domain.
\param rule1D [in] - 1D cubature rule names.
\param growth1D [in] - 1D cubature growth rules.
\param maxlevel [in] - Maximum level of sparse grid.
\param isNormalized [in] - Flag whether to normalize cubature weights.
*/
AdaptiveSparseGridInterface(
int dimension,
std::vector<EIntrepidBurkardt> rule1D,
std::vector<EIntrepidGrowth> growth1D,
int maxLevel,
bool isNormalized);
/** \brief Evaluate the integrand function.
\param output [out] - Output of integrand evaluation.
\param input [in] - Evaluation points.
*/
virtual void eval_integrand(
UserVector & output,
std::vector<Scalar> & input) = 0;
/** \brief Evaluate the cubature rule.
\param output [out] - Output of cubature evaluation.
\param cubRule [in] - Cubature rule.
*/
virtual void eval_cubature(
UserVector & output,
CubatureTensorSorted<Scalar> & cubRule);
/** \brief User defined error indicator function.
\param input [in] - Reduction of high dimensional integral value to a Scalar.
*/
virtual Scalar error_indicator(
UserVector & input) = 0;
/** \brief User defined test for maximum level of cubature.
\param index [in] - Multi-index of cubature levels.
*/
virtual bool max_level(
std::vector<int> index);
/** \brief Compute initial quantities for sparse grid adaptation
\param output [out] - Vector of outputs.
*/
void init(UserVector & output);
/** \brief Return user defined 1D quadrature rules.
\param rule1D [out] - 1D quadrature rules names.
*/
void getRule(std::vector<EIntrepidBurkardt> & rule1D);
/** \brief Return user defined 1D growth rules.
\param growth1D [out] - 1D quadrature growth rules.
*/
void getGrowth(std::vector<EIntrepidGrowth> & growth1D);
/** \brief Return dimension of integration domain.
*/
int getDimension();
/** \brief Return initial error indicator.
*/
Scalar getInitialDiff();
/** \brief Return whether or not cubature weights are normalized.
*/
bool isNormalized();
};
} // End Intrepid namespace
// include templated definitions
#include <Intrepid_AdaptiveSparseGridInterfaceDef.hpp>
#endif
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