/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_atoi.c                                          :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: whaffman <whaffman@student.codam.nl>       +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2024/07/05 18:42:02 by whaffman          #+#    #+#             */
/*   Updated: 2024/07/09 22:20:16 by whaffman         ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

#include "libft.h"

static int	ft_isspace(int c)
{
	return (' ' == c || '\f' == c || \
			'\n' == c || '\r' == c || \
			'\t' == c || '\v' == c);
}

int	ft_atoi(const char *nptr)
{
	int	sign;
	int	res;

	while (ft_isspace(*nptr))
		nptr++;
	res = 0;
	sign = 1;
	while (*nptr == '-' || *nptr == '+')
	{
		if (*nptr == '-')
			sign *= -1;
		nptr++;
	}
	while (ft_isdigit(*nptr))
		res = 10 * res + sign * (*nptr++ - '0');
	return (res);
}