lua 10进制转换成其它进制table表示

-- params@num integer
-- params@radix integer 进制基数(~) 默认为10
-- NOTE:先不输出符号
function NumberToArray(num, radix)
    if type(num) ~= "number" and tonumber(num) == nil then
        ERROR("NumberToArray", "params is not a number : ",num);
        return {};
    end

    num = math.abs(tonumber(num));if num ==  then
        INFO("tl.NumberToArray", "params 0 ");
        return {};
    end

    radix = math.abs(tonumber(radix) or );
    if radix <=  then
        ERROR("tl.NumberToArray", "radix is error : ",num);
        return {};
    end

    local retArray = {};
    while num ~=  do
        table.insert(retArray, , math.mod(num, radix));
        num = math.floor(num/radix);
    end

    return retArray;
end