/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: bszilas <bszilas@student.42vienna.com>     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/04/10 10:49:04 by vvobis            #+#    #+#             */
/*   Updated: 2024/09/13 22:19:12 by bszilas          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

int    is_space(char const c)
{
    if ((c >= 9 && c <= 13) || c == ' ')
        return (1);
    return (0);
}

int    ft_atoi(char const *s)
{
    int            nb;
    char const    *tmp;

    nb = 0;
    while (is_space(*s))
        s++;
    tmp = s;
    if (*tmp == '+' || *tmp == '-')
        tmp++;
    while (*tmp >= '0' && *tmp <= '9')
    {
        nb *= 10;
        nb += (*tmp - '0');
        tmp++;
    }
    if (*s == '-')
        nb = -nb;
    return (nb);
}

long    ft_atol(const char *nptr)
{
    int64_t    n;
    int        sign;

    n = 0;
    sign = 1;
    while (ft_isspace(*nptr))
        nptr++;
    if (*nptr == '-')
        sign = -1;
    if (sign == -1 || *nptr == '+')
        nptr++;
    while (*nptr >= '0' && *nptr <= '9')
        n = n * 10 + (*nptr++ - '0');
    return (n * sign);
}