Hi everyone,

I have a simple question about calling the downhill simplex routine amoeba. If my objective function is called obj, how do I pass this to amoeba? I see in the amoeba declaration, the format is

float (*funk)(float[])

Do I need to declare a pointer to obj and use this pointer when I call amoeba? What is the format?

Thanks for any help,
Daryl

Hi Daryl,

you can just define your function, e.g. in the file functionfile.c (with associated header file functionfile.h), as

float obj(float *x)

Then in the beginning of main.c say

#include <amoeba.h>
#include <functionfile.h>

and in the body of main() you call

amoeba (p, y, ndim, ftols, &obj, &fevals);

where p is a starting configuration of ndim+1 points.

Wies.