int hsgn(double input, double thresh){
        int ret;
        if(input > math.abs(thresh))
                ret = 1;
        else if(input < math.abs(thresh))
                ret = -1;
        else
                ret = 0;

        return ret;
}

zeroCrossCounter(double input, double thresh){
    static int xzc;
    static int xc;

        int ysgn = hsgn(input, thresh);
    int xzcn = kzc(ysgn, xzc);
    xzc = xzcn;
    int yzc = hzc(ysgn, xzc);
    int xcn = kc(yzc, xc);
    xc = xcn;
    return 0;
}