#include "header.h"

// Function for Optimization Function A
// Compute f(x) and return it in fp

int fA(Vector x,float *fp,int spec)
{
	int i;
	static int c=0; // a counter, static variable, always in the same place
	float fsum=0.0;

	if(spec==1)	// spec=1 for give the count of the current number of evaluations
	{
		return c;
	}
	else			// spec=0 for compute the function 
	{
		c++;
		for(i=1; i<=(x.n)-2; i++)
		{
			fsum+=(float) sin(x.fp[i]*x.fp[i+1]+cos(x.fp[i-1]-x.fp[i]));  // calculate the value of f(x)
		}
		*fp=fsum;
	}
	return 0;
}