Dune::ACFem::PlaceholderOperation< Placeholder > Struct Template Reference

Placeholder operation wraps another object and attaches an id to it. More...

#include <dune/acfem/expressions/expressionoperations.hh>

Detailed Description

template<class Placeholder>
struct Dune::ACFem::PlaceholderOperation< Placeholder >

Placeholder operation wraps another object and attaches an id to it.

Placeholder operations are used in order to identify placeholders in an expression chain. The difference to IndeterminateOperation is that during auto-differentiation the derivative of an "indetermiante expression" is the constant 1 (what "1" may ever mean in the given context) and the derivative of a "placeholder expression" is not known unless explicitly implemented.

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

• dune/acfem/expressions/expressionoperations.hh