CoDiPack  3.0.0
A Code Differentiation Package
SciComp TU Kaiserslautern
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codi::UnaryJacobianOperation< T_Real, T_Impl > Struct Template Reference

Implements UnaryOperation for functions where the gradient can be computed and transposed. More...

#include <computeExpression.hpp>

Inheritance diagram for codi::UnaryJacobianOperation< T_Real, T_Impl >:

Public Types

using Impl = T_Impl
 See UnaryOperation.
 
using Real = T_Real
 See UnaryJacobianOperation.
 
- Public Types inherited from codi::UnaryOperation< T_Real, T_Impl >
using Impl = T_Impl
 See UnaryOperation.
 
using Real = T_Real
 See UnaryOperation.
 
- Public Types inherited from codi::ComputeOperation< T_Real >
using Real = T_Real
 See ComputeOperation.
 

Static Public Member Functions

template<typename Adjoint, typename Arg>
static inlineArg applyAdjointArg (Adjoint const &adjoint, Real const &result, Arg const &arg)
 
template<typename Tangent, typename Arg>
static inlineauto applyTangentArg (Tangent const &tangent, Real const &result, Arg const &arg)
 
template<typename Arg>
static inlineauto gradient (Arg const &arg, Real const &result)
 Compute $ \frac{\d f}{\d x} $.
 
template<typename Arg>
static inlineReal primal (Arg const &arg)
 
- Static Public Member Functions inherited from codi::UnaryOperation< T_Real, T_Impl >
template<size_t argNumber, typename Adjoint, typename Arg>
static inlineauto applyAdjoint (Adjoint const &adjoint, Real const &result, Arg const &arg)
 
template<typename Adjoint, typename Arg>
static inlineauto applyAdjointArg (Adjoint const &adjoint, Real const &result, Arg const &arg)
 
template<size_t argNumber, typename Tangent, typename Arg>
static inlineauto applyTangent (Tangent const &tangent, Real const &result, Arg const &arg)
 
template<typename Tangent, typename Arg>
static inlineauto applyTangentArg (Tangent const &tangent, Real const &result, Arg const &arg)
 
template<typename Arg>
static inlineReal primal (Arg const &arg)
 
- Static Public Member Functions inherited from codi::ComputeOperation< T_Real >
template<size_t argNumber, typename Adjoint, typename... Args>
static inlineauto applyAdjoint (Adjoint const &adjoint, Real const &result, Args const &... args)
 
template<size_t argNumber, typename Tangent, typename... Args>
static inlineauto applyTangent (Tangent const &tangent, Real const &result, Args const &... args)
 
static inlinestd::string getMathRep ()
 Get the math symbol of the operation. E.g. + for operators and pow() for functions.
 
template<typename... Args>
static inlineReal primal (Args const &... args)
 

Detailed Description

template<typename T_Real, typename T_Impl>
struct codi::UnaryJacobianOperation< T_Real, T_Impl >

Implements UnaryOperation for functions where the gradient can be computed and transposed.

Implementations need to define primal and gradient.

See UnaryOperation for details.

Template Parameters
T_RealOriginal primal value of the statement/expression.
T_ImplFinal implementation of the operation.

Member Function Documentation

◆ applyAdjointArg()

template<typename T_Real, typename T_Impl>
template<typename Adjoint, typename Arg>
static inlineArg codi::UnaryJacobianOperation< T_Real, T_Impl >::applyAdjointArg ( Adjoint const & adjoint,
Real const & result,
Arg const & arg )
inlinestatic

Apply the reverse AD mode with respect to the argument on the adjoint and return the result. Computes $ \bar x = \frac{\d f}{\d x}^T \bar w $

Calls gradient, transposes the result and multiplies with adjoint.

◆ applyTangentArg()

template<typename T_Real, typename T_Impl>
template<typename Tangent, typename Arg>
static inlineauto codi::UnaryJacobianOperation< T_Real, T_Impl >::applyTangentArg ( Tangent const & tangent,
Real const & result,
Arg const & arg )
inlinestatic

Apply the forward AD mode with respect to the argument on the tangent and return the result. Computes $ \dot w = \frac{\d f}{\d x} \dot x $

Calls gradient and multiplies with tangent.

◆ primal()

template<typename T_Real, typename T_Impl>
template<typename Arg>
static inlineReal codi::UnaryJacobianOperation< T_Real, T_Impl >::primal ( Arg const & arg)
static

Compute the primal value from the arguments. E.g. evaluates $ w = f(x)$

The argument types are the types of the result of a getValue call on the expression.


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