UtilLib

2025-08-04 13:20:27 +02:00
commit d215954dec
43 changed files with 1931 additions and 0 deletions
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+/* ************************************************************************** */
+/*                                                                            */
+/*                                                        :::      ::::::::   */
+/*   ft_atoi.c                                          :+:      :+:    :+:   */
+/*                                                    +:+ +:+         +:+     */
+/*   By: hexplor <marvin@42.fr>                     +#+  +:+       +#+        */
+/*                                                +#+#+#+#+#+   +#+           */
+/*   Created: 2023/11/13 15:57:24 by hexplor           #+#    #+#             */
+/*   Updated: 2024/07/01 17:59:13 by yantoine         ###   ########.fr       */
+/*                                                                            */
+/* ************************************************************************** */
+
+#include "libft.h"
+
+static int	ft_isspace(char c)
+{
+	if (c == '\t' || c == '\n' || c == '\v' \
+	|| c == '\f' || c == '\r' || c == ' ')
+		return (1);
+	return (0);
+}
+
+static int	ft_fsign(char c)
+{
+	if (c == '-')
+		return (-1);
+	return (1);
+}
+
+int	ft_atoi(const char *text)
+{
+	long	sign;
+	long	number;
+
+	number = 0;
+	sign = 1;
+	while (ft_isspace(*text) == 1)
+		text++;
+	if (*text == '-' || *text == '+')
+	{
+		sign = ft_fsign(*text);
+		text++;
+	}
+	while (ft_isdigit(*text) == 1)
+	{
+		number *= 10;
+		number += *text - '0';
+		text++;
+	}
+	return (sign * number);
+}