Function Class Reference

Inheritance diagram for Function:

List of all members.

Classes
struct	Multi
Public Member Functions
	Function (const Settings *settings, const std::string &name, const Tplate::Ptr tp, const std::vector< std::string > &vars)
virtual void	init ()
const Tplate::Ptr &	tp () const
int	nv () const
	number of variables
virtual void	calculate_value_in_range (const std::vector< realt > &x, std::vector< realt > &y, int first, int last) const =0
	calculate value at x[i] and _add_ the result to y[i] (for each i)
void	calculate_value (const std::vector< realt > &x, std::vector< realt > &y) const
realt	calculate_value (realt x) const
virtual void	calculate_value_deriv_in_range (const std::vector< realt > &x, std::vector< realt > &y, std::vector< realt > &dy_da, bool in_dx, int first, int last) const =0
	wrapper around array version
void	calculate_value_deriv (const std::vector< realt > &x, std::vector< realt > &y, std::vector< realt > &dy_da, bool in_dx=false) const
void	do_precomputations (const std::vector< Variable * > &variables)
virtual void	more_precomputations ()
void	erased_parameter (int k)
virtual bool	get_nonzero_range (double, realt &, realt &) const
virtual bool	get_center (realt *a) const
virtual bool	get_height (realt *) const
virtual bool	get_fwhm (realt *) const
virtual bool	get_area (realt *) const
bool	get_iwidth (realt *a) const
	integral width := area / height
virtual const std::vector < std::string > &	get_other_prop_names () const
	get list of other properties (e.g. like Lorentzian-FWHM of Voigt)
virtual realt	get_other_prop (const std::string &) const
	returns value of the property, or 0 if not defined
const std::vector< realt > &	av () const
std::string	get_basic_assignment () const
	return sth like: f = Linear($foo, $_2)
std::string	get_current_assignment (const std::vector< Variable * > &variables, const std::vector< realt > &parameters) const
	return sth like: f = Linear(a0=$foo, a1=~3.5)
virtual std::string	get_current_formula (const std::string &x="x") const
virtual std::string	get_param (int n) const
int	get_param_nr (const std::string &param) const
realt	get_param_value (const std::string &param) const
realt	numarea (realt x1, realt x2, int nsteps) const
realt	find_x_with_value (realt x1, realt x2, realt val, int max_iter=1000) const
realt	find_extremum (realt x1, realt x2, int max_iter=1000) const
	finds root of derivative, using bisection method
virtual std::string	get_bytecode () const
Static Public Member Functions
static Function *	factory (const Settings *settings, const std::string &name, const Tplate::Ptr tp, const std::vector< std::string > &vars)
Protected Attributes
const Settings *	settings_
Tplate::Ptr	tp_
std::vector< realt >	av_
std::vector< Multi >	multi_
int	center_idx_

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Detailed Description

Definition at line 16 of file func.h.

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Member Function Documentation

realt Function::find_x_with_value	(	realt	x1,
		realt	x2,
		realt	val,
		int	max_iter = 1000
	)			const

search x in [x1, x2] for which f(x)==val, x1, x2, val: f(x1) <= val <= f(x2) or f(x2) <= val <= f(x1) bisection + Newton-Raphson

Definition at line 239 of file func.cpp.

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Member Data Documentation

std::vector<realt> Function::av_ [protected]

current values of arguments, the vector can be extended by derived classes to store temporary values

Definition at line 103 of file func.h.

Referenced by nv().

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

• /home/wojdyr/fityk/src/func.h
• /home/wojdyr/fityk/src/func.cpp