amoeba.c File Reference

#include <volume_io/internal_volume_io.h>
#include <bicpl/numerical.h>

Include dependency graph for amoeba.c:

Go to the source code of this file.

Defines
#define	FLIP_RATIO   1.0
#define	CONTRACT_RATIO   0.5
#define	STRETCH_RATIO   2.0
#define	N_STEPS_NO_IMPROVEMENT   20
Functions
private Real	get_function_value (amoeba_struct *amoeba, float parameters[])
public void	initialize_amoeba (amoeba_struct *amoeba, int n_parameters, Real initial_parameters[], Real parameter_deltas[], amoeba_function function, void *function_data, Real tolerance)
public Real	get_amoeba_parameters (amoeba_struct *amoeba, Real parameters[])
public void	terminate_amoeba (amoeba_struct *amoeba)
private Real	try_amoeba (amoeba_struct *amoeba, Real sum[], int high, Real fac)
public BOOLEAN	perform_amoeba (amoeba_struct *amoeba)

---

Define Documentation

#define CONTRACT_RATIO   0.5

Definition at line 23 of file amoeba.c. Referenced by perform_amoeba().

#define FLIP_RATIO   1.0

Definition at line 22 of file amoeba.c. Referenced by perform_amoeba().

#define N_STEPS_NO_IMPROVEMENT   20

Definition at line 213 of file amoeba.c. Referenced by perform_amoeba().

#define STRETCH_RATIO   2.0

Definition at line 24 of file amoeba.c. Referenced by perform_amoeba().

---

Function Documentation

public Real get_amoeba_parameters (  amoeba_struct *  amoeba, Real  parameters[] )

Definition at line 118 of file amoeba.c. References amoeba_struct::n_parameters, amoeba_struct::parameters, and amoeba_struct::values. Referenced by optimize_simplex().

private Real get_function_value (  amoeba_struct *  amoeba, float  parameters[] )

Definition at line 41 of file amoeba.c. References amoeba_struct::function, and amoeba_struct::function_data. Referenced by initialize_amoeba(), perform_amoeba(), and try_amoeba().

public void initialize_amoeba (  amoeba_struct *  amoeba, int  n_parameters, Real  initial_parameters[], Real  parameter_deltas[], amoeba_function  function, void *  function_data, Real  tolerance )

Definition at line 66 of file amoeba.c. References amoeba_struct::function, amoeba_struct::function_data, get_function_value(), amoeba_struct::n_parameters, amoeba_struct::n_steps_no_improvement, amoeba_struct::parameters, amoeba_struct::sum, amoeba_struct::tolerance, and amoeba_struct::values. Referenced by optimize_simplex().

public BOOLEAN perform_amoeba (  amoeba_struct *  amoeba  )

Definition at line 232 of file amoeba.c. References CONTRACT_RATIO, FALSE, FLIP_RATIO, get_function_value(), amoeba_struct::n_parameters, N_STEPS_NO_IMPROVEMENT, amoeba_struct::n_steps_no_improvement, numerically_close(), amoeba_struct::parameters, STRETCH_RATIO, amoeba_struct::sum, amoeba_struct::tolerance, TRUE, try_amoeba(), and amoeba_struct::values. Referenced by optimize_simplex().

public void terminate_amoeba (  amoeba_struct *  amoeba  )

Definition at line 150 of file amoeba.c. References amoeba_struct::parameters, amoeba_struct::sum, and amoeba_struct::values. Referenced by optimize_simplex().

private Real try_amoeba (  amoeba_struct *  amoeba, Real  sum[], int  high, Real  fac )

Definition at line 177 of file amoeba.c. References get_function_value(), amoeba_struct::n_parameters, amoeba_struct::parameters, and amoeba_struct::values. Referenced by perform_amoeba().

---