static int  ft_power(int nb, int power, int i)
{
    if (nb < i)
        return (i);
    else
        return (ft_power(nb, power, i * power));
}

int         ft_next_power(int nb, int power)
{
    return (ft_power(nb, power, 1));
}

int         ft_last_power(int nb, int power)
{
    return (ft_power(nb, power, 1) / power);
}