typedef struct {
	float	y;
	float	minus_c0;
	float	amp_korr;
	float  	rez_amp_korr;
	}DigiF;


void digif_init(DigiF *filter,float minus_c0)
{
	filter->y=0;
	filter->minus_c0=minus_c0;
	filter->amp_korr=1.-minus_c0;
	filter->rez_amp_korr=1./filter->amp_korr;
}

int digif_cycle(DigiF *filter,float x)
{
	filter->y=((float)x)+(filter->minus_c0*filter->y);
	return (int)(filter->y*filter->amp_korr);
}