#ifndef __my_formula_with_inverse_h__
#define __my_formula_with_inverse_h__


//#include "formula.h"

double my_b_to_p(double b, double rtt, double tzero, int psize, int bval) 
{
  //  printf("b=%f, rtt=%f, tzero=%f, psize=%d, bval=%d",b,rtt,tzero,psize,bval);
	double p, pi, bres;
	int ctr=0;
	p=0.5;pi=0.25;
	while(1) {
		bres=p_to_b(p,rtt,tzero,psize, bval);
		/*
		 * if we're within 5% of the correct value from below, this is OK
		 * for this purpose.
		 */
		if ((bres>0.95*b)&&(bres<1.05*b)) 
			return p;
		if (bres>b) {
			p+=pi;
		} else {
			p-=pi;
		}
		pi/=2.0;
		ctr++;
		if (ctr>30) {
			return p;
		}
	}
}

#endif /* __my_formula_with_inverse_h__ */