This class is an implementation of CustomFunction that does no computation. More...

#include <CustomFunction.h>

Inheritance diagram for PLMD::lepton::PlaceholderFunction:

Public Member Functions
	PlaceholderFunction (int numArgs)
	Create a Placeholder function.

CustomFunction *	clone () const
	Create a new duplicate of this object on the heap using the "new" operator.

double	evaluate (const double *arguments) const
	Evaluate the function.

double	evaluateDerivative (const double arguments, const int derivOrder) const
	Evaluate a derivative of the function.

int	getNumArguments () const
	Get the number of arguments this function expects.

Private Attributes
int	numArgs

Detailed Description

This class is an implementation of CustomFunction that does no computation.

It just returns 0 for the value and derivatives. This is useful when using the parser to analyze expressions rather than to evaluate them. You can just create PlaceholderFunctions to represent any custom functions that may appear in expressions.

Constructor & Destructor Documentation

◆ PlaceholderFunction()

PLMD::lepton::PlaceholderFunction::PlaceholderFunction ( int numArgs )

inline

Create a Placeholder function.

Parameters

numArgs the number of arguments the function expects

Member Function Documentation

◆ clone()

CustomFunction * PLMD::lepton::PlaceholderFunction::clone ( ) const

inlinevirtual

Create a new duplicate of this object on the heap using the "new" operator.

Implements PLMD::lepton::CustomFunction.

◆ evaluate()

double PLMD::lepton::PlaceholderFunction::evaluate ( const double * arguments ) const

inlinevirtual

Evaluate the function.

Parameters

arguments the array of argument values

Implements PLMD::lepton::CustomFunction.

◆ evaluateDerivative()

double PLMD::lepton::PlaceholderFunction::evaluateDerivative	(	const double *	arguments,
		const int *	derivOrder ) const

inlinevirtual

Evaluate a derivative of the function.

Parameters

arguments	the array of argument values
derivOrder	an array specifying the number of times the function has been differentiated with respect to each of its arguments. For example, the array {0, 2} indicates a second derivative with respect to the second argument.

Implements PLMD::lepton::CustomFunction.