/* ************************************************************************** */
/*                                                                            */
/*                                                  :::  o_   ::::::    :::   */
/*   ph_atoi.c                                     :+:  /    :+::+:    :+:    */
/*                                                +:+   >   +:++:+    +:+     */
/*   By: whaffman <whaffman@student.codam.nl>    +#+  +:+  +#++#++:++#++      */
/*                                              +#+ +#+#+ +#++#+    +#+ \o/   */
/*   Created: 2025/01/20 14:27:09 by whaffman   #+#+# #+#+# #+#    #+#   |    */
/*   Updated: 2025/01/27 14:14:05 by whaffman   ###   ###  ###    ###   / \   */
/*                                                                            */
/* ************************************************************************** */

#include "philo.h"

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

static int	ph_isdigit(int c)
{
	return ('0' <= c && '9' >= c);
}

int	ph_atoi(const char *nptr, int *res)
{
	while (ph_isspace(*nptr))
		nptr++;
	*res = 0;
	while (ph_isdigit(*nptr))
		*res = 10 * *res + (*nptr++ - '0');
	if (*nptr != '\0')
		return (FAILURE);
	return (SUCCESS);
}