Reference documentation for deal.II version 9.3.3
Differentiation::AD::internal::HessianType< FEValuesExtractors::SymmetricTensor< 2 >, FEValuesExtractors::Scalar > Struct Reference

#include <deal.II/differentiation/ad/ad_helpers.h>

## Public Types

template<int , int dim, typename NumberType >
using type = SymmetricTensor< 2, dim, NumberType >

## Detailed Description

An intermediate helper struct that defines the return type of Hessian (second derivative) calculations of scalar fields with respect to fields defined by the two extractor-type template parameters. This particular specialization is for taking the first derivative with respect to a symmetric tensor field, and the second with respect to a scalar field.

Definition at line 2223 of file ad_helpers.h.

## ◆ type

template<int , int dim, typename NumberType >
 using Differentiation::AD::internal::HessianType< FEValuesExtractors::SymmetricTensor< 2 >, FEValuesExtractors::Scalar >::type = SymmetricTensor<2 , dim, NumberType>

The type associated with computing the gradient of a scalar field with respect to the given ExtractorType_Row = FEValuesExtractors::SymmetricTensor<2> followed by the ExtractorType_Col = FEValuesExtractors::Scalar.

Definition at line 2234 of file ad_helpers.h.

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