/* svd form to int value */
_svdf2i(f)
{
        local str;

        switch (f)
        {
                case 0:
                default:
                        str = "00";
                        break;
                case 1:
                        str = "01";
                        break;
                case 2:
                        str = "10";
                        break;
                case 3:
                        str = "11";
                        break;
        }
        return(str);
}