1  /* ************************************************************************** */
 2  /*                                                                            */
 3  /*                                                        :::      ::::::::   */
 4  /*   ft_itoa_base.c                                     :+:      :+:    :+:   */
 5  /*                                                    +:+ +:+         +:+     */
 6  /*   By: ll-hotel <ll-hotel@student.42lyon.fr>      +#+  +:+       +#+        */
 7  /*                                                +#+#+#+#+#+   +#+           */
 8  /*   Created: 2024/03/17 16:39:32 by ll-hotel          #+#    #+#             */
 9  /*   Updated: 2024/08/20 17:49:22 by ll-hotel         ###   ########.fr       */
10  /*                                                                            */
11  /* ************************************************************************** */
12  
13  #include "ft_basics.h"
14  #include "ft_math.h"
15  
16  char	*ft_itoa_base(int n, const char *base_a)
17  {
18  	const unsigned char	is_negative = (n < 0);
19  	const unsigned char	base = ft_strlen(base_a);
20  	char				*n_a;
21  	long				tmp;
22  	short				i;
23  
24  	i = ft_log_b(n, base) + 1;
25  	n_a = ft_calloc(i + 1 + is_negative, sizeof(char));
26  	if (!n_a)
27  		return (0);
28  	i += is_negative;
29  	tmp = n * (!is_negative - is_negative);
30  	while (i-- > is_negative)
31  	{
32  		n_a[i] = base_a[tmp % base];
33  		tmp /= base;
34  	}
35  	if (is_negative)
36  		n_a[0] = '-';
37  	return (n_a);
38  }