XS_EUPXS(XS_main_add) {
    dVAR; dXSARGS;
	int	a = (int)SvIV(ST(0))
	int	b = (int)SvIV(ST(1))
	int	RETVAL;
	dXSTARG;

	RETVAL = add(a, b);
	XSprePUSH; 
	PUSHi((IV)RETVAL);
    XSRETURN(1);
}