/* normalization string to integer */
_int2nrm(ival)
{
        switch (ival)
        {
                case 0:
                default:
                        return(_nonestr);

                case 1:
                        return(_normalizedstr);

                case 2:
                        return(_biasedstr);

                case 3:
                        return(_unbiasedstr);
        }
}