/usr/include/trilinos/Stokhos_DerivBasis.hpp is in libtrilinos-stokhos-dev 12.4.2-2.
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#ifndef STOKHOS_DERIVBASIS_HPP
#define STOKHOS_DERIVBASIS_HPP
#include "Stokhos_OrthogPolyBasis.hpp"
namespace Stokhos {
/*!
* \brief Abstract base class for multivariate orthogonal polynomials
* that support computing double and triple products involving derivatives
* of the basis polynomials.
*/
template <typename ordinal_type, typename value_type>
class DerivBasis :
public virtual OrthogPolyBasis<ordinal_type, value_type> {
public:
//! Constructor
DerivBasis() {};
//! Destructor
virtual ~DerivBasis() {};
/*!
* \brief Compute triple product tensor
* \f$D_{ijk} = \langle\Psi_i\Psi_j D_v\Psi_k\rangle\f$ where
* \f$D_v\Psi_k\f$ represents the derivative of \f$\Psi_k\f$ in the
* direction \f$v\f$.
*/
/*!
* The definition of \f$v\f$ is defined by the derived class implementation.
*/
virtual
Teuchos::RCP< Stokhos::Dense3Tensor<ordinal_type, value_type> >
computeDerivTripleProductTensor(
const Teuchos::RCP< const Teuchos::SerialDenseMatrix<ordinal_type, value_type> >& Bij,
const Teuchos::RCP< const Stokhos::Sparse3Tensor<ordinal_type, value_type> >& Cijk) const = 0;
/*!
* \brief Compute double product tensor
* \f$B_{ij} = \langle \Psi_i D_v\Psi_j\rangle\f$ where \f$D_v\Psi_j\f$
* represents the derivative of \f$\Psi_j\f$ in the direction \f$v\f$.
*/
/*!
* The definition of \f$v\f$ is defined by the derived class implementation.
*/
virtual
Teuchos::RCP< Teuchos::SerialDenseMatrix<ordinal_type, value_type> >
computeDerivDoubleProductTensor() const = 0;
private:
// Prohibit copying
DerivBasis(const DerivBasis&);
// Prohibit Assignment
DerivBasis& operator=(const DerivBasis& b);
}; // class DerivBasis
} // Namespace Stokhos
#endif // STOKHOS_DERIVBASIS
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