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Reference documentation for deal.II version 9.1.1
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#include <deal.II/differentiation/ad/ad_helpers.h>
Public Types | |
template<int , int dim, typename NumberType > | |
using | type = SymmetricTensor< 4, dim, NumberType > |
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 both the first and second derivatives with respect to symmetric tensor fields.
Definition at line 2281 of file ad_helpers.h.
using Differentiation::AD::internal::HessianType< FEValuesExtractors::SymmetricTensor< 2 >, FEValuesExtractors::SymmetricTensor< 2 > >::type = SymmetricTensor<4 , 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::SymmetricTensor<2>
.
Definition at line 2293 of file ad_helpers.h.