powell.c File Reference

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include "include/powell.h"

Functions
void	_powell_linmin (double *p, double *xi, int n, double *fret)
double	_powell_brent (double ax, double bx, double cx, double tol, double *xmin)
double	_powell_f1dim (double x)
void	_powell_mnbrak (double *ax, double *bx, double *cx, double *fa, double *fb, double *fc)
double	_powell_sqr (double x)
void	_powell_shft (double *a, double *b, double *c, double *d)
double	_powell_sign (double a, double b)
double	_powell_fmax (double a, double b)
int	powell (double *p, double *delta, int parNr, double ftol, int *iterNr, double *fret, double(*_fun)(double *))
Variables
int	_powell_ncom
double	_powell_pcom [MAX_PARAMETERS]
double	_powell_xicom [MAX_PARAMETERS]
double(*	_powellFunc )(double *)

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Function Documentation

double _powell_brent (  double  ax, double  bx, double  cx, double  tol, double *  xmin )

double _powell_f1dim (  double  x  )

double _powell_fmax (  double  a, double  b )

void _powell_linmin (  double *  p, double *  xi, int  n, double *  fret )

void _powell_mnbrak (  double *  ax, double *  bx, double *  cx, double *  fa, double *  fb, double *  fc )

void _powell_shft (  double *  a, double *  b, double *  c, double *  d )

double _powell_sign (  double  a, double  b )

double _powell_sqr (  double  x  )

int powell (  double *  p, double *  delta, int  parNr, double  ftol, int *  iterNr, double *  fret, double(*)(double *)  _fun )

Powell function minimization routine. Returns: Returns 0, if succesful, 1 if required tolerance was not reached, and >1 in case of an error. Parameters: p  Initial guess and final set of parameters delta  Initial changes for parameters, ==0 if fixed parNr  Nr of parameters ftol  Fractional tolerance (for WSS); 0<ftol<1 iterNr  Max nr of iterations, and nr of required iters fret  Function return value (WSS) at minimum _fun  Function to minimize (must return the WSS)

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Variable Documentation

int _powell_ncom

double _powell_pcom[MAX_PARAMETERS]

double _powell_xicom[MAX_PARAMETERS]

double(* _powellFunc)(double *)

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