Added the function itoa_base fr unsigned integers. Changed libft.h accordingly.

diff --git a/ft_uitoa_base.c b/ft_uitoa_base.c
new file mode 100644 (file)
index 0000000..3d446c2
--- /dev/null
+++ b/ft_uitoa_base.c
@@ -0,0 +1,73 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_uitoa_base.c                                    :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/09/05 09:46:11 by ljiriste          #+#    #+#             */
+/*   Updated: 2023/09/15 18:43:25 by ljiriste         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include <stdlib.h>    //malloc
+#include <stdint.h>    //intmax_t
+#include "libft.h"
+
+static int     size_needed(uintmax_t n, size_t base_len)
+{
+       int     res;
+
+       if (n == 0)
+               return (2);
+       res = 1;
+       while (n != 0)
+       {
+               ++res;
+               n /= base_len;
+       }
+       return (res);
+}
+
+static int     valid_base(const char *base)
+{
+       int     i;
+       int     j;
+
+       if (ft_strlen(base) < 2)
+               return (0);
+       i = 0;
+       while (base[i])
+       {
+               j = i + 1;
+               while (base[j])
+                       if (base[i] == base[j++])
+                               return (0);
+               ++i;
+       }
+       return (1);
+}
+
+char   *ft_uitoa_base(uintmax_t n, const char *base)
+{
+       int             size;
+       int             base_len;
+       char    *res;
+
+       if (!valid_base(base))
+               return (NULL);
+       base_len = ft_strlen(base);
+       size = size_needed(n, base_len);
+       res = malloc(size);
+       if (res == NULL)
+               return (res);
+       res[--size] = '\0';
+       if (n == 0)
+               res[0] = base[0];
+       while (n != 0)
+       {
+               res[--size] = base[n % base_len];
+               n /= base_len;
+       }
+       return (res);
+}

diff --git a/libft.h b/libft.h
index c837206e84007406a48bd8778e95a28ebb9c8510..2a9f9ec08feea685690161da51ada2c786350b51 100644 (file)
--- a/libft.h
+++ b/libft.h
@@ -6,7 +6,7 @@
 /*   By: ljiriste <marvin@42.fr>                    +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2023/08/15 12:58:15 by ljiriste          #+#    #+#             */
-/*   Updated: 2023/09/05 12:06:26 by ljiriste         ###   ########.fr       */
+/*   Updated: 2023/09/15 18:43:23 by ljiriste         ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
@@ -57,6 +57,7 @@ char  **ft_split(const char *s, char c);
 
 char   *ft_itoa(int n);
 char   *ft_itoa_base(intmax_t n, const char *base);
+char   *ft_uitoa_base(uintmax_t n, const char *base);
 char   *ft_ctoa(char c);
 
 char   *ft_strmapi(const char *s, char (*f)(unsigned int, char));