Seluj78/Minishell

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_itoa_base_ll.c                                  :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: jlasne <marvin@42.fr>                      +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2016/11/28 11:08:31 by jlasne            #+#    #+#             */
/*   Updated: 2016/11/28 11:09:50 by jlasne           ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static int    ft_nblen_base_ll(unsigned long long int n, int base)
{
    int        len;

    len = 1;
    while (n >= (unsigned long long int)base)
    {
        n /= base;
        len++;
    }
    return (len);
}

char        *ft_itoa_base_ll(unsigned long long int n, int base)
{
    int                len;
    char            *str;
    static char        tab[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8',
    '9', 'A', 'B', 'C', 'D', 'E', 'F'};

    if (base > 16 || base <= 1)
        return (NULL);
    len = ft_nblen_base_ll(n, base);
    if (!(str = ft_strnew(len)))
        return (NULL);
    while (len)
    {
        str[--len] = tab[n % base];
        n = n / base;
    }
    return (str);
}