function result = rtsInt2Str(num, digits)%get the number of digits in the current numbertemp = num;current_digits = 0;while temp >= 1 temp = temp/10; current_digits = current_digits+1;endif current_digits > digits result = int2str(num);else result = []; for i = 1:digits - current_digits result = [result '0']; end result = [result int2str(num)];end