Added ft_itoa_cpy

1 files changed, 44 insertions, 0 deletions

diff --git a/src/str/ft_itoa_cpy.c b/src/str/ft_itoa_cpy.c
new file mode 100644
index 0000000..a66d016
--- /dev/null
+++ b/src/str/ft_itoa_cpy.c
@@ -0,0 +1,44 @@
+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_itoa_cpy.c                                      :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: cacharle <marvin@42.fr>                    +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2019/10/07 10:19:56 by cacharle          #+#    #+#             */
+/*   Updated: 2020/09/14 15:59:28 by charles          ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+/*
+** \brief      itoa but cpy number in a buffer instead of allocating memory
+** \param dst  Buffer where to put the string representation of the number
+** \param n    Number to convert
+** \return     Always dst
+*/
+
+char		*ft_itoa_cpy(char *dst, int n)
+{
+	int				len;
+	unsigned int	u_nbr;
+
+	len = n < 0 || n == 0 ? 1 : 0;
+	u_nbr = n < 0 ? -n : n;
+	while (u_nbr > 0)
+	{
+		u_nbr /= 10;
+		len++;
+	}
+	dst[len] = '\0';
+	u_nbr = n < 0 ? -n : n;
+	if (n < 0)
+		dst[0] = '-';
+	while (--len >= (n < 0 ? 1 : 0))
+	{
+		dst[len] = (u_nbr % 10) | 0x30;
+		u_nbr /= 10;
+	}
+	return (dst);
+}