This class implements a local (no spatial correlation) random function using Gaussian distribution. More...

#include <localgaussianrandomfunction.h>

Inheritance diagram for oofem::LocalGaussianRandomFunction:

Collaboration diagram for oofem::LocalGaussianRandomFunction:

Public Member Functions
	LocalGaussianRandomFunction (int n, Domain *d)
	Constructor. More...

virtual	~LocalGaussianRandomFunction ()
	Destructor. More...

virtual void	evaluate (FloatArray &answer, const std::map< std::string, FunctionArgument > &valDict, GaussPoint *gp=NULL, double param=0.)
	Returns the value of the function for given input. More...

virtual double	evaluateAtTime (double t)
	Returns the value of the function at given time. More...

virtual double	evaluateVelocityAtTime (double t)
	Returns the first time derivative of the function at given time. More...

virtual double	evaluateAccelerationAtTime (double t)
	Returns the second time derivative of the function at given time. More...

virtual IRResultType	initializeFrom (InputRecord *ir)
	Initializes receiver according to object description stored in input record. More...

virtual const char *	giveClassName () const

virtual const char *	giveInputRecordName () const

Public Member Functions inherited from oofem::Function
	Function (int n, Domain *d)
	Constructor. More...

virtual	~Function ()
	Destructor. More...

double	evaluate (TimeStep *tStep, ValueModeType mode)
	Returns the value of load time function at given time. More...

virtual double	evaluate (const std::map< std::string, FunctionArgument > &valDict)
	Returns the (scalar) value of the function for given input. More...

double	giveFunctionParameter (int paramID)

Public Member Functions inherited from oofem::FEMComponent
	FEMComponent (int n, Domain *d)
	Regular constructor, creates component with given number and belonging to given domain. More...

virtual	~FEMComponent ()
	Virtual destructor. More...

Domain *	giveDomain () const

virtual void	setDomain (Domain *d)
	Sets associated Domain. More...

int	giveNumber () const

void	setNumber (int num)
	Sets number of receiver. More...

virtual void	updateLocalNumbering (EntityRenumberingFunctor &f)
	Local renumbering support. More...

virtual void	giveInputRecord (DynamicInputRecord &input)
	Setups the input record string of receiver. More...

virtual contextIOResultType	saveContext (DataStream &stream, ContextMode mode, void *obj=NULL)
	Stores receiver state to output stream. More...

virtual contextIOResultType	restoreContext (DataStream &stream, ContextMode mode, void *obj=NULL)
	Restores the receiver state previously written in stream. More...

virtual int	checkConsistency ()
	Allows programmer to test some internal data, before computation begins. More...

virtual void	printOutputAt (FILE file, TimeStep tStep)
	Prints output of receiver to stream, for given time step. More...

virtual void	printYourself ()
	Prints receiver state on stdout. Useful for debugging. More...

virtual Interface *	giveInterface (InterfaceType t)
	Interface requesting service. More...

std::string	errorInfo (const char *func) const
	Returns string for prepending output (used by error reporting macros). More...

Protected Member Functions
double	ran1 (long *idum)
	Computes pseudo-random numbers. More...

double	normalCdfInverse (double cdf, double a, double b)
	Computes the inverse of the Gaussian CDF. More...

double	normal01CdfInverse (double p)
	Computes the inverse of the normal distribution. More...

double	dpolyValue (int n, double a[], double x)

Protected Attributes
long	randomInteger
	Integer which is the input of the pseudo-random number generator. More...

double	mean
	Gauss distribution parameters. More...

double	variance

Protected Attributes inherited from oofem::FEMComponent
int	number
	Component number. More...

Domain *	domain
	Link to domain object, useful for communicating with other FEM components. More...

Additional Inherited Members
Public Attributes inherited from oofem::Function
Domain *	funcDomain

int	parameterType

Detailed Description

This class implements a local (no spatial correlation) random function using Gaussian distribution.

Author: Peter Grassl

Definition at line 53 of file localgaussianrandomfunction.h.

Constructor & Destructor Documentation

oofem::LocalGaussianRandomFunction::LocalGaussianRandomFunction	(	int	n,
		Domain *	d
	)

Constructor.

Definition at line 44 of file localgaussianrandomfunction.C.

oofem::LocalGaussianRandomFunction::~LocalGaussianRandomFunction ( )

virtual

Destructor.

Definition at line 47 of file localgaussianrandomfunction.C.

Member Function Documentation

double oofem::LocalGaussianRandomFunction::dpolyValue	(	int	n,
		double	a[],
		double	x
	)

protected

Definition at line 252 of file localgaussianrandomfunction.C.

Referenced by normal01CdfInverse().

void oofem::LocalGaussianRandomFunction::evaluate	(	FloatArray &	answer,
		const std::map< std::string, FunctionArgument > &	valDict,
		GaussPoint *	gp = `NULL`,
		double	param = `0.`
	)

virtual

Returns the value of the function for given input.

Parameters

valDict	Map with inputs.
answer	Function value.

Reimplemented from oofem::Function.

Definition at line 51 of file localgaussianrandomfunction.C.

References evaluateAtTime().

double oofem::LocalGaussianRandomFunction::evaluateAccelerationAtTime ( double t )

virtual

Returns the second time derivative of the function at given time.

Parameters

t Time.

Returns: .

Implements oofem::Function.

Definition at line 70 of file localgaussianrandomfunction.C.

References OOFEM_ERROR.

double oofem::LocalGaussianRandomFunction::evaluateAtTime ( double t )

virtual

Returns the value of the function at given time.

Parameters

t Time.

Returns: .

Reimplemented from oofem::Function.

Definition at line 57 of file localgaussianrandomfunction.C.

References mean, normalCdfInverse(), ran1(), randomInteger, and variance.

Referenced by evaluate().

double oofem::LocalGaussianRandomFunction::evaluateVelocityAtTime ( double t )

virtual

Returns the first time derivative of the function at given time.

Parameters

t Time.

Returns: .

Implements oofem::Function.

Definition at line 63 of file localgaussianrandomfunction.C.

References OOFEM_ERROR.

virtual const char* oofem::LocalGaussianRandomFunction::giveClassName ( ) const

inlinevirtual

Returns: Class name of the receiver.

Implements oofem::FEMComponent.

Definition at line 73 of file localgaussianrandomfunction.h.

virtual const char* oofem::LocalGaussianRandomFunction::giveInputRecordName ( ) const

inlinevirtual

Returns: Input record name of the receiver.

Implements oofem::FEMComponent.

Definition at line 74 of file localgaussianrandomfunction.h.

References _IFT_LocalGaussianRandomFunction_Name.

IRResultType oofem::LocalGaussianRandomFunction::initializeFrom ( InputRecord * ir )

virtual

Initializes receiver according to object description stored in input record.

This function is called immediately after creating object using constructor. Input record can be imagined as data record in component database belonging to receiver. Receiver may use value-name extracting functions to extract particular field from record.