Reference documentation for deal.II version 9.4.1

#include <deal.II/differentiation/ad/ad_helpers.h>
Public Types  
using  type = typename HessianType< ExtractorType_Row, ExtractorType_Col >::template type< rank, dim, NumberType > 
Static Public Attributes  
static const int  rank 
A helper struct that defines the final return type of Hessian (second derivative) calculations of scalar fields with respect to fields defined by the two extractortype template parameters. The first, ExtractorType_Row
, defines the field that the first derivatives are taken with respect to while the second, ExtractorType_Col
, defines the field that the second derivatives are taken with respect to.
Definition at line 2300 of file ad_helpers.h.
using Differentiation::AD::internal::ScalarFieldHessian< dim, NumberType, ExtractorType_Row, ExtractorType_Col >::type = typename HessianType<ExtractorType_Row, ExtractorType_Col>:: template type<rank, dim, NumberType> 
The type associated with computing the Hessian of a scalar field with first respect to the field defined by the ExtractorType_Row
and then with respect to the field defined by the ExtractorType_Col
.
Definition at line 2314 of file ad_helpers.h.

static 
The tensor rank of the resulting derivative computation.
Definition at line 2305 of file ad_helpers.h.