New libft, feelsgoodman

1 files changed, 62 insertions, 0 deletions

diff --git a/libft/src/ft_itoa.c b/libft/src/ft_itoa.c
new file mode 100644
index 0000000..bf3c0c8
--- /dev/null
+++ b/libft/src/ft_itoa.c
@@ -0,0 +1,62 @@
+/* ************************************************************************** */
+/*                                                          LE - /            */
+/*                                                              /             */
+/*   ft_itoa.c                                        .::    .:/ .      .::   */
+/*                                                 +:+:+   +:    +:  +:+:+    */
+/*   By: rbousset <marvin@le-101.fr>                +:+   +:    +:    +:+     */
+/*                                                 #+#   #+    #+    #+#      */
+/*   Created: 2019/10/13 02:22:48 by rbousset     #+#   ##    ##    #+#       */
+/*   Updated: 2019/10/13 13:35:46 by rbousset    ###    #+. /#+    ###.fr     */
+/*                                                         /                  */
+/*                                                        /                   */
+/* ************************************************************************** */
+
+#include "libft.h"
+#include <inttypes.h>
+#include <stdlib.h>
+
+static uint8_t
+	ft_intlen(int n)
+{
+	uint8_t	len;
+
+	len = 0;
+	if (!n)
+		return (1);
+	if (n < 0)
+		len = 1;
+	while (n != 0)
+	{
+		n /= 10;
+		len++;
+	}
+	return (len);
+}
+
+char
+	*ft_itoa(int n)
+{
+	char			*s;
+	unsigned int	nb;
+	uint8_t			i;
+
+	i = ft_intlen(n) - 1;
+	if (!(s = (char*)malloc((i + 2) * sizeof(char))))
+		return (NULL);
+	if (!n)
+		s[i] = '0';
+	nb = n;
+	if (n < 0)
+	{
+		s[0] = '-';
+		nb = -n;
+	}
+	s[i + 1] = '\0';
+	while (nb > 0)
+	{
+		s[i] = 48 + (nb % 10);
+		nb = nb / 10;
+		i--;
+	}
+	return (s);
+}