The inverse tangent of the ratio of two Scalar functions. More...

#include <ScalarInverseTangent.h>

Inheritance diagram for MEAL::ScalarInverseTangent:

Public Member Functions
double	function (double x) const
	The function.

double	dfdx (double x) const
	And its first derivative. More...

std::string	get_name () const
	Return the name of the class.

Public Member Functions inherited from MEAL::UnaryRule< Scalar >
	UnaryRule ()
	Default constructor.

	UnaryRule (const UnaryRule &rule)
	Copy constructor.

UnaryRule &	operator= (const UnaryRule &rule)
	Assignment operator.

	~UnaryRule ()
	Destructor.

void	set_model (Scalar *model)
	Set the Function on which the operation will be performed.

Public Member Functions inherited from MEAL::Scalar
virtual Scalar *	clone () const
	Clone method.

Public Member Functions inherited from MEAL::Evaluable< double >
	Evaluable ()
	Default constructor.

	Evaluable (const Evaluable &copy)
	Copy constructor.

Evaluable &	operator= (const Evaluable &copy)
	Assignment operator.

double	evaluate (std::vector< double > *grad=0) const
	Return the Jones matrix and its gradient.

EstimateTraits< double >::type	estimate () const
	Return the Jones Estimate matrix.

Public Member Functions inherited from MEAL::Function
	Function ()
	Default constructor.

	Function (const Function &model)
	Copy constructor.

Function &	operator= (const Function &model)
	Assignment operator.

virtual	~Function ()
	Virtual destructor.

virtual void	copy (const Function *model)
	Does the work for operator =.

virtual TextInterface::Parser *	get_interface ()
	Return a text interface that can be used to access this instance.

virtual void	parse (const std::string &text)
	Parses the values of model parameters and fit flags from a string.

virtual void	print (std::string &text) const
	Prints the values of model parameters and fit flags to a string.

virtual std::string	get_description () const
	Return the description of the class.

unsigned	get_nparam () const
	Return the number of parameters.

std::string	get_param_name (unsigned index) const
	Return the name of the specified parameter.

std::string	get_param_description (unsigned index) const
	Return the description of the specified parameter.

double	get_param (unsigned index) const
	Return the value of the specified parameter.

void	set_param (unsigned index, double value)
	Set the value of the specified parameter.

double	get_variance (unsigned index) const
	Return the variance of the specified parameter.

void	set_variance (unsigned index, double value)
	Set the variance of the specified parameter.

bool	get_infit (unsigned index) const
	Return true if parameter at index is to be fitted.

void	set_infit (unsigned index, bool flag)
	Set flag for parameter at index to be fitted.

void	set_argument (unsigned dimension, Argument *axis)
	Set the independent variable of the specified dimension.

Estimate< double >	get_Estimate (unsigned index) const
	Return an Estimate of the specified parameter.

void	set_Estimate (unsigned index, const Estimate< double > &param)
	Set the Estimate of the specified parameter.

void	set_verbose (bool)
	Set the verbosity of this instance.

bool	get_verbose () const
	Get the verbosity of this instance.

void	set_evaluation_changed (bool _changed=true)
	Set true if the Function evaluation has changed.

bool	get_evaluation_changed () const
	Return true if the Function evaluation has changed.

const ParameterPolicy *	get_parameter_policy () const
	Provide access to the parameter_policy attribute.

bool	has_parameter_policy () const
	Some wrappers may not have a parameter policy.

virtual void	print_parameters (std::string &text, const std::string &separator) const
	Prints the values of model parameters and fit flags to a string.

Public Member Functions inherited from Reference::Able
	Able (const Able &)

Able &	operator= (const Able &)

unsigned	get_reference_count () const

Public Member Functions inherited from Reference::HeapTracked
	HeapTracked (const HeapTracked &)

HeapTracked &	operator= (const HeapTracked &)

bool	__is_on_heap () const

Additional Inherited Members
Public Types inherited from MEAL::Evaluable< double >
typedef double	Result
	The return type of the evaluate method.

Public Types inherited from MEAL::Function
enum	Attribute { ParameterCount, Evaluation }
	Function attributes that require the attention of Composite models. More...

Static Public Member Functions inherited from MEAL::Function
template<class Model >
static Model *	load (const std::string &filename)
	Construct a new Model instance from a file.

static Function *	load_Function (const std::string &filename)
	Construct a new Function instance from a file.

static Function *	factory (const std::string &text)
	Construct a new Function instance from a string. More...

Static Public Member Functions inherited from Reference::Able
static size_t	get_instance_count ()

Static Public Member Functions inherited from Reference::HeapTracked
static void *	operator new (size_t size, void *ptr=0)

static void	operator delete (void location, void ptr)

static void	operator delete (void *location)

static size_t	get_heap_queue_size ()

Public Attributes inherited from MEAL::Function
Callback< Attribute >	changed
	Callback executed when a Function Attribute has been changed.

Static Public Attributes inherited from MEAL::Scalar
static const char *	Name = "Scalar"
	The name of the class. More...

Static Public Attributes inherited from MEAL::Evaluable< double >
static const char *	Name
	The name of the class.

Static Public Attributes inherited from MEAL::Function
static bool	verbose = false
	Verbosity flag.

static bool	very_verbose = false
	Low-level verbosity flag.

static bool	check_zero = false
	When set, some Functions will throw an Error if they evaluate to zero.

static bool	check_variance = false
	When set, some Functions will throw an Error if input variance <= 0.

static bool	cache_results = false
	When set, use the Cached evaluation policy and callbacks.

Protected Member Functions inherited from MEAL::UnaryScalar
void	calculate (double &result, std::vector< double > *gradient)
	Return the result and its gradient.

Protected Member Functions inherited from MEAL::Evaluable< double >
void	calculate (Evaluable eval, double &result, std::vector< double > grad)
	Use the calculate method of another Evaluable instance.

void	copy_evaluation_policy (const Evaluable *other)

Protected Member Functions inherited from MEAL::Function
void	copy_evaluation_changed (const Function &model)
	Copy the evaluation changed state of another model instance.

void	copy_parameter_policy (const Function *)
	Copy the parameter policy of another instance.

void	set_parameter_policy (ParameterPolicy *policy)
	Set the parameter policy.

Protected Member Functions inherited from Reference::Able
Handle *	__reference (bool active) const

void	__dereference (bool auto_delete=true) const

Protected Attributes inherited from MEAL::UnaryRule< Scalar >
Project< Scalar >	model
	The Function on which the operation will be performed.

Protected Attributes inherited from MEAL::Evaluable< double >
Reference::To< EvaluationPolicy< double > >	evaluation_policy
	The policy for managing function evaluation.

Protected Attributes inherited from MEAL::Function
Reference::To< ParameterPolicy >	parameter_policy
	The policy for managing function parameters.

Reference::To< ArgumentPolicy >	argument_policy
	The policy for managing function arguments.

bool	set_parameter_policy_context
	Set the parameter policy context.

bool	this_verbose
	The verbosity of this instance.

Detailed Description

The inverse tangent of the ratio of two Scalar functions.

Member Function Documentation

◆ dfdx()

double MEAL::ScalarInverseTangent::dfdx ( double x ) const

virtual

And its first derivative.

The partial derivative with respect to arg1.

Implements MEAL::UnaryScalar.

The documentation for this class was generated from the following files:

ScalarInverseTangent.h
ScalarInverseTangent.C

Public Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ dfdx()