#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <math.h>
#include <string.h>
#include <time.h>
#include <ctype.h>
#include "decpoint.h"
#include "petunits.h"
#include "datetime.h"
#include "backup.h"
#include "include/mathfunc.h"

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Functions
void	fitEmpty (FIT *fit)
void	fitInit (FIT *fit)
int	fitWrite (FIT fit, char filename)
int	fitSetmem (FIT *fit, int voiNr)
void	fitPrint (FIT *fit)
int	fitRead (char filename, FIT fit)
int	fitFunctionformat (int type, char *str)
int	fitFunctionname (int type, char *str)
int	fitEval (FitVOI r, double x, double y)
int	fitEvaltac (FitVOI r, double x, double *y, int dataNr)
int	fitIntegralEval (FitVOI r, double x, double yi)
int	fitIntegralEvaltac (FitVOI r, double x, double *yi, int dataNr)
int	fitDerivEval (FitVOI r, double x, double yd)
int	fitDerivEvaltac (FitVOI r, double x, double *yd, int dataNr)

Function Documentation

int fitDerivEval	(	FitVOI *	r,
		double	x,
		double *	yd
	)

Evaluates yd=Df(x).

Returns:: Returns 0, if ok.

Parameters:

r	Fit parameters of a single region
x	Time where to evaluate the derivative of the function
yd	The derivative of the function is returned here

Definition at line 1319 of file mathfunc.c.

References FitVOI::p, and FitVOI::type.

Referenced by fitDerivEvaltac().

int fitDerivEvaltac	(	FitVOI *	r,
		double *	x,
		double *	yd,
		int	dataNr
	)

Evaluates an array yd[i]=Df(x[i]).

Returns:: Returns 0, if ok.

Parameters:

r	Fit parameters of a single region
x	Times where to evaluate the function derivatives
yd	Array for the function derivatives
dataNr	Nr of (x,yd) data

Definition at line 1425 of file mathfunc.c.

References fitDerivEval().

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void fitEmpty ( FIT * fit )

Free memory allocated for FIT. All contents are cleared.

Definition at line 194 of file mathfunc.c.

References FIT::_voidataNr, FIT::datafile, FIT::program, FIT::time, FIT::timeunit, FIT::unit, FIT::voi, and FIT::voiNr.

Referenced by fitRead(), and fitSetmem().

int fitEval	(	FitVOI *	r,
		double	x,
		double *	y
	)

Evaluate y=f(x).

Returns:: Returns 0, if ok.

Parameters:

r	Fit parameters of a single region
x	Time where to evaluate the function
y	The value of the function is returned here

Definition at line 675 of file mathfunc.c.

References MATHFUNC_TEST, FitVOI::p, FitVOI::parNr, and FitVOI::type.

Referenced by fitEvaltac().

int fitEvaltac	(	FitVOI *	r,
		double *	x,
		double *	y,
		int	dataNr
	)

Evaluates an array y[i]=f(x[i]).

Returns:: Returns 0, if ok.

Parameters:

r	Fit parameters of a single region
x	Times where to evaluate the function
y	Array for the function values
dataNr	Nr of (x,y) data

Definition at line 1116 of file mathfunc.c.

References fitEval().

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int fitFunctionformat	(	int	type,
		char *	str
	)

Copies the description of a function type to the specified string which must have space for >=128 characters.

Parameters:

type	The number of function
str	Representation of the format of the function

Definition at line 464 of file mathfunc.c.

int fitFunctionname	(	int	type,
		char *	str
	)

Copies the name of the function to the specified string which must have space for >=128 characters.

Parameters:

type	The number of function
str	Name of the function

Definition at line 588 of file mathfunc.c.

void fitInit ( FIT * fit )

Initiate FIT structure. Call this once before first use.

Definition at line 209 of file mathfunc.c.

References FIT::_voidataNr, and FIT::voiNr.

int fitIntegralEval	(	FitVOI *	r,
		double	x,
		double *	yi
	)

Evaluates yi=Integral of f(x) between 0 and x.

Returns:: Returns 0, if ok.

Parameters:

r	Fit parameters of a single region
x	Time where to evaluate integral of the function
yi	The integral value of the function is returned here

Definition at line 1138 of file mathfunc.c.

References FitVOI::p, and FitVOI::type.

Referenced by fitIntegralEvaltac().

int fitIntegralEvaltac	(	FitVOI *	r,
		double *	x,
		double *	yi,
		int	dataNr
	)

Evaluate an array yi[i]=Integral of f(x[i]) between 0 and x.

Returns:: Returns 0, if ok.

Parameters:

r	Fit parameters of a single region
x	Times where to evaluate the function integrals
yi	Array for the function integral values
dataNr	Nr of (x,yi) data

Definition at line 1297 of file mathfunc.c.

References fitIntegralEval().

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void fitPrint ( FIT * fit )

Print to stdout the contents of FIT data structure. Mainly for testing purposes.

Definition at line 332 of file mathfunc.c.

References FIT::_voidataNr, fitWrite(), MATHFUNC_TEST, and FIT::voiNr.

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int fitRead	(	char *	filename,
		FIT *	fit
	)

Read FIT file contents to the specified data structure, emptying its old contents.

Returns:: In case of an error, >0 is returned, and a description is written in fiterrmsg.

Parameters:

filename	Pointer to filename
fit	Pointer to initiated FIT struct

Definition at line 346 of file mathfunc.c.

References FIT::datafile, FitVOI::dataNr, FitVOI::end, FIT_VER, fitEmpty(), fiterrmsg, fitSetmem(), FitVOI::hemisphere, MATHFUNC_TEST, FitVOI::name, FitVOI::p, FitVOI::parNr, FitVOI::place, FIT::program, FitVOI::start, FIT::time, FIT::timeunit, FitVOI::type, FIT::unit, FIT::voi, FitVOI::voiname, FIT::voiNr, and FitVOI::wss.

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int fitSetmem	(	FIT *	fit,
		int	voiNr
	)

Allocate memory for FIT data. Any previous contents are destroyed.

Definition at line 311 of file mathfunc.c.

References FIT::_voidataNr, fitEmpty(), FIT::voi, and FIT::voiNr.

Referenced by fit_allocate_with_dft(), and fitRead().

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int fitWrite	(	FIT *	fit,
		char *	filename
	)

Write function parameters in FIT into specified file. If necessary, a backup file (+BACKUP_EXTENSION) is created. In case of an error, >0 is returned, and a description is written in fiterrmsg.

Definition at line 222 of file mathfunc.c.

References FIT::datafile, FitVOI::dataNr, FitVOI::end, FIT_VER, fiterrmsg, FitVOI::hemisphere, MATHFUNC_TEST, FitVOI::p, FitVOI::parNr, FitVOI::place, FIT::program, FitVOI::start, FIT::time, FIT::timeunit, FitVOI::type, FIT::unit, FIT::voi, FitVOI::voiname, FIT::voiNr, and FitVOI::wss.

Referenced by fitPrint().

Functions

Function Documentation