ft_isprime.c

/* ************************************************************************** */
/*                                                                            */
/*                                                        :::      ::::::::   */
/*   ft_isprime.c                                       :+:      :+:    :+:   */
/*                                                    +:+ +:+         +:+     */
/*   By: igarbuz <marvin@42.fr>                     +#+  +:+       +#+        */
/*                                                +#+#+#+#+#+   +#+           */
/*   Created: 2018/11/16 18:22:26 by igarbuz           #+#    #+#             */
/*   Updated: 2018/11/16 18:48:36 by igarbuz          ###   ########.fr       */
/*                                                                            */
/* ************************************************************************** */

int		ft_isprime(long int i)
{
	long int d;

	if (i < 2)
		return (0);
	if (i == 2 || i == 3)
		return (1);
	d = 2;
	while (d * d <= i)
	{
		if (i % d == 0)
			return (0);
		d++;
	}
	return (1);
}