Intrepid2_HGRAD_HEX_C2_FEM.hpp

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// @HEADER
// *****************************************************************************
//                           Intrepid2 Package
//
// Copyright 2007 NTESS and the Intrepid2 contributors.
// SPDX-License-Identifier: BSD-3-Clause
// *****************************************************************************
// @HEADER

#ifndef __INTREPID2_HGRAD_HEX_C2_FEM_HPP__
#define __INTREPID2_HGRAD_HEX_C2_FEM_HPP__

#include "Intrepid2_Basis.hpp"
#include "Intrepid2_HGRAD_QUAD_C2_FEM.hpp"

namespace Intrepid2 {

  namespace Impl {

    template<bool serendipity>
    class Basis_HGRAD_HEX_DEG2_FEM {
    public:
      typedef struct Hexahedron<serendipity ? 20 : 27> cell_topology_type;
      template<EOperator opType>
      struct Serial {
        template<typename OutputViewType,
                 typename inputViewType>
        KOKKOS_INLINE_FUNCTION
        static void
        getValues(       OutputViewType output,
                   const inputViewType input );

      };

      template<typename DeviceType,
               typename outputValueValueType, class ...outputValueProperties,
               typename inputPointValueType,  class ...inputPointProperties>
      static void
      getValues( const typename DeviceType::execution_space& space,
                       Kokkos::DynRankView<outputValueValueType,outputValueProperties...> outputValues,
                 const Kokkos::DynRankView<inputPointValueType, inputPointProperties...>  inputPoints,
                 const EOperator operatorType);

      template<typename outputValueViewType,
               typename inputPointViewType,
               EOperator opType>
      struct Functor {
              outputValueViewType _outputValues;
        const inputPointViewType  _inputPoints;

        KOKKOS_INLINE_FUNCTION
        Functor(       outputValueViewType outputValues_,
                       inputPointViewType  inputPoints_ )
          : _outputValues(outputValues_), _inputPoints(inputPoints_) {}

        KOKKOS_INLINE_FUNCTION
        void operator()(const ordinal_type pt) const {
          switch (opType) {
          case OPERATOR_VALUE : {
            auto       output = Kokkos::subview( _outputValues, Kokkos::ALL(), pt );
            const auto input  = Kokkos::subview( _inputPoints,                 pt, Kokkos::ALL() );
            Serial<opType>::getValues( output, input );
            break;
          }
          case OPERATOR_GRAD :
          case OPERATOR_D1 :
          case OPERATOR_D2 :
          case OPERATOR_D3 :
          case OPERATOR_D4 :
          case OPERATOR_MAX : {
            auto       output = Kokkos::subview( _outputValues, Kokkos::ALL(), pt, Kokkos::ALL() );
            const auto input  = Kokkos::subview( _inputPoints,                 pt, Kokkos::ALL() );
            Serial<opType>::getValues( output, input );
            break;
          }
          default: {
            INTREPID2_TEST_FOR_ABORT( opType != OPERATOR_VALUE &&
                                      opType != OPERATOR_GRAD &&
                                      opType != OPERATOR_D1 &&
                                      opType != OPERATOR_D2 &&
                                      opType != OPERATOR_D3 &&
                                      opType != OPERATOR_D4 &&
                                      opType != OPERATOR_MAX,
                                      ">>> ERROR: (Intrepid2::Basis_HGRAD_HEX_DEG2_FEM::Serial::getValues) operator is not supported");
          }
          }
        }
      };
    };
  }

  template<bool serendipity,
           typename DeviceType,
           typename outputValueType,
           typename pointValueType>
  class Basis_HGRAD_HEX_DEG2_FEM : public Basis<DeviceType,outputValueType,pointValueType> {
  public:
    using BasisBase = Basis<DeviceType,outputValueType,pointValueType>;
    using typename BasisBase::ExecutionSpace;

    using typename BasisBase::OrdinalTypeArray1DHost;
    using typename BasisBase::OrdinalTypeArray2DHost;
    using typename BasisBase::OrdinalTypeArray3DHost;

    using typename BasisBase::OutputViewType;
    using typename BasisBase::PointViewType ;
    using typename BasisBase::ScalarViewType;

    Basis_HGRAD_HEX_DEG2_FEM();

    using BasisBase::getValues;

    virtual
    void
    getValues( const ExecutionSpace& space,
                     OutputViewType  outputValues,
               const PointViewType   inputPoints,
               const EOperator       operatorType = OPERATOR_VALUE ) const override {
#ifdef HAVE_INTREPID2_DEBUG
      // Verify arguments
      Intrepid2::getValues_HGRAD_Args(outputValues,
                                      inputPoints,
                                      operatorType,
                                      this->getBaseCellTopology(),
                                      this->getCardinality());
#endif
      if constexpr (serendipity)
        Impl::Basis_HGRAD_HEX_DEG2_FEM<true>::
          getValues<DeviceType>(space,
                                outputValues,
                                inputPoints,
                                operatorType);
      else
        Impl::Basis_HGRAD_HEX_DEG2_FEM<false>::
          getValues<DeviceType>(space,
                                outputValues,
                                inputPoints,
                                operatorType);
    }

    virtual void 
    getScratchSpaceSize(      ordinal_type& perTeamSpaceSize,
                              ordinal_type& perThreadSpaceSize,
                        const PointViewType inputPointsconst,
                        const EOperator operatorType = OPERATOR_VALUE) const override;

    KOKKOS_INLINE_FUNCTION
    virtual void 
    getValues(       
          OutputViewType outputValues,
      const PointViewType  inputPoints,
      const EOperator operatorType,
      const typename Kokkos::TeamPolicy<typename DeviceType::execution_space>::member_type& team_member,
      const typename DeviceType::execution_space::scratch_memory_space & scratchStorage, 
      const ordinal_type subcellDim = -1,
      const ordinal_type subcellOrdinal = -1) const override;

    virtual
    void
    getDofCoords( ScalarViewType dofCoords ) const override {
#ifdef HAVE_INTREPID2_DEBUG
      // Verify rank of output array.
      INTREPID2_TEST_FOR_EXCEPTION( rank(dofCoords) != 2, std::invalid_argument,
                                    ">>> ERROR: (Intrepid2::Basis_HGRAD_HEX_DEG2_FEM::getDofCoords) rank = 2 required for dofCoords array");
      // Verify 0th dimension of output array.
      INTREPID2_TEST_FOR_EXCEPTION( static_cast<ordinal_type>(dofCoords.extent(0)) != this->getCardinality(), std::invalid_argument,
                                    ">>> ERROR: (Intrepid2::Basis_HGRAD_HEX_DEG2_FEM::getDofCoords) mismatch in number of dof and 0th dimension of dofCoords array");
      // Verify 1st dimension of output array.
      INTREPID2_TEST_FOR_EXCEPTION( dofCoords.extent(1) != this->getBaseCellTopology().getDimension(), std::invalid_argument,
                                    ">>> ERROR: (Intrepid2::Basis_HGRAD_HEX_DEG2_FEM::getDofCoords) incorrect reference cell (1st) dimension in dofCoords array");
#endif
      Kokkos::deep_copy(dofCoords, this->dofCoords_);
    }

    virtual
    void
    getDofCoeffs( ScalarViewType dofCoeffs ) const override {
#ifdef HAVE_INTREPID2_DEBUG
      // Verify rank of output array.
      INTREPID2_TEST_FOR_EXCEPTION( rank(dofCoeffs) != 1, std::invalid_argument,
                                    ">>> ERROR: (Intrepid2::Basis_HGRAD_HEX_DEG2_FEM::getdofCoeffs) rank = 1 required for dofCoeffs array");
      // Verify 0th dimension of output array.
      INTREPID2_TEST_FOR_EXCEPTION( static_cast<ordinal_type>(dofCoeffs.extent(0)) != this->getCardinality(), std::invalid_argument,
                                    ">>> ERROR: (Intrepid2::Basis_HGRAD_HEX_DEG2_FEM::getdofCoeffs) mismatch in number of dof and 0th dimension of dofCoeffs array");
#endif
      Kokkos::deep_copy(dofCoeffs, 1.0);
    }

    virtual
    const char*
    getName() const override {
      return serendipity ? "Intrepid2_HGRAD_HEX_I2_FEM" : "Intrepid2_HGRAD_HEX_C2_FEM";
    }

    BasisPtr<DeviceType,outputValueType,pointValueType>
      getSubCellRefBasis(const ordinal_type subCellDim, const ordinal_type subCellOrd) const override{
      if(subCellDim == 1) {
        return Teuchos::rcp(new
            Basis_HGRAD_LINE_C2_FEM<DeviceType,outputValueType,pointValueType>());
      } else if(subCellDim == 2) {
        return Teuchos::rcp(new
            Basis_HGRAD_QUAD_DEG2_FEM<serendipity, DeviceType, outputValueType, pointValueType>());
      }
      INTREPID2_TEST_FOR_EXCEPTION(true,std::invalid_argument,"Input parameters out of bounds");
    }

    BasisPtr<typename Kokkos::HostSpace::device_type,outputValueType,pointValueType>
    getHostBasis() const override{
      return Teuchos::rcp(new Basis_HGRAD_HEX_DEG2_FEM<serendipity, typename Kokkos::HostSpace::device_type,outputValueType,pointValueType>());
    }
  };

  template<typename DeviceType = void, typename outputValueType = double, typename pointValueType = double>
  using Basis_HGRAD_HEX_C2_FEM = Basis_HGRAD_HEX_DEG2_FEM<false, DeviceType, outputValueType, pointValueType>;

  template<typename DeviceType = void, typename outputValueType = double, typename pointValueType = double>
  using Basis_HGRAD_HEX_I2_FEM = Basis_HGRAD_HEX_DEG2_FEM<true, DeviceType, outputValueType, pointValueType>;

}// namespace Intrepid2

#include "Intrepid2_HGRAD_HEX_C2_FEMDef.hpp"

#endif