FTensor::DiffTensor< T > Class Template Reference

Fourth-order differential tensor symmetric in both index pairs. More...

#include "src/ftensor/src/FTensor/DiffTensor.hpp"

Public Types
using	value_type = typename promote< T, double >::V

Public Member Functions
constexpr value_type	operator() (const int N0, const int N1, const int N2, const int N3) const
template<char i, char j, char k, char l, int Dim01, int Dim23>
Ddg_Expr< DiffTensor< T >, value_type, Dim01, Dim23, i, j, k, l >	operator() (const Index< i, Dim01 > &, const Index< j, Dim01 > &, const Index< k, Dim23 > &, const Index< l, Dim23 > &) const

Detailed Description

template<class T = int>
class FTensor::DiffTensor< T >

Fourth-order differential tensor symmetric in both index pairs.

Template Parameters

T

Definition at line 15 of file DiffTensor.hpp.

Member Typedef Documentation

value_type

template<class T = int>

using FTensor::DiffTensor< T >::value_type = typename promote<T, double>::V

Definition at line 17 of file DiffTensor.hpp.

Member Function Documentation

operator()() [1/2]

template<class T = int>

template<char i, char j, char k, char l, int Dim01, int Dim23>

Ddg_Expr< DiffTensor< T >, value_type, Dim01, Dim23, i, j, k, l > FTensor::DiffTensor< T >::operator() ( const Index< i, Dim01 > &  , const Index< j, Dim01 > &  , const Index< k, Dim23 > &  , const Index< l, Dim23 > &    ) const

inline

Definition at line 30 of file DiffTensor.hpp.

                                                                     {
    return Ddg_Expr<DiffTensor<T>, value_type, Dim01, Dim23, i, j, k, l>(
        *this);
  };

operator()() [2/2]

template<class T = int>

constexpr value_type FTensor::DiffTensor< T >::operator() ( const int  N0, const int  N1, const int  N2, const int  N3  ) const

inlineconstexpr

Definition at line 19 of file DiffTensor.hpp.

                                                      {
    const auto first =
        (N0 == N2 && N1 == N3) ? value_type(1) : value_type(0);
    const auto second =
        (N0 == N3 && N1 == N2) ? value_type(1) : value_type(0);
    return (first + second) / value_type(2);
  }

---

The documentation for this class was generated from the following file:

• src/ftensor/src/FTensor/DiffTensor.hpp