codi::MappedAdjoints< T_Identifier, T_Gradient > Struct Template Reference

Implementation of adjoints via a map. More...

#include <customAdjoints.hpp>

Public Types
using	Gradient = T_Gradient
	See MappedAdjoints.
using	Identifier = T_Identifier
	See MappedAdjoints.

Public Member Functions
Gradient &	operator[] (Identifier const &i)
	Access operator in non-constant call contexts.
Gradient const &	operator[] (Identifier const &i) const
	Access operator in constant call contexts.

Public Attributes
std::map< Identifier, Gradient >	adjoints

Detailed Description

template<typename T_Identifier, typename T_Gradient>
struct codi::MappedAdjoints< T_Identifier, T_Gradient >

Implementation of adjoints via a map.

Useful for the evaluation of tape parts with non-contiguous, far-apart identifiers. Can be used as custom adjoints for tape evaluations, see CustomAdjointVectorEvaluationTapeInterface. Can also be used for Jacobian computations with custom adjoints, see Algorithms::computeJacobianCustomAdjoints().

The implementation ensures that any identifier can be used to access the map, both in constant and non-constant calling contexts. Entries that do not exist yet are created on the fly and default-initialized.

Template Parameters

T_Identifier	Identifier type, usually chosen as Tape::Identifier.
T_Gradient	Gradient type, corresponds to the Adjoint template parameter in the referred-to functions.

Member Data Documentation

adjoints

template<typename T_Identifier , typename T_Gradient >

std::map<Identifier, Gradient> codi::MappedAdjoints< T_Identifier, T_Gradient >::adjoints

mutable

Internal map implementation, kept public for flexibility. Mutable so that access in constant call contexts does not prevent the insertion of new elements.

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

• include/codi/tools/data/customAdjoints.hpp