diff --git a/add_to_list.c b/add_to_list.c
index 0eb22ac..791fb9a 100644
--- a/add_to_list.c
+++ b/add_to_list.c
@@ -6,7 +6,7 @@
 /*   By: hulamy <hulamy@student.42.fr>              +#+  +:+       +#+        */
 /*                                                +#+#+#+#+#+   +#+           */
 /*   Created: 2019/04/14 15:20:53 by hulamy            #+#    #+#             */
-/*   Updated: 2019/04/16 15:32:14 by hulamy           ###   ########.fr       */
+/*   Updated: 2019/04/18 01:33:00 by hulamy           ###   ########.fr       */
 /*                                                                            */
 /* ************************************************************************** */
 
diff --git a/test_mask.c b/test_mask.c
index ef8547d..c157fd2 100644
--- a/test_mask.c
+++ b/test_mask.c
@@ -1,17 +1,80 @@
 #include "libft.h"
 
+void	print_bits(int octet)
+{
+	int i;
+	int j;
+
+	i = 1 << 12;
+	j = 4096;
+	while (i >>= 1)
+		(octet & i) ? ft_putnbr(1) : ft_putnbr(0);
+	ft_putchar('\n');
+	while (j >>= 1)
+		(octet & j) ? ft_putnbr(1) : ft_putnbr(0);
+	ft_putchar('\n');
+}
+
+void	compare(int initial, int compare)
+{
+	int i;
+	int j;
+
+	i = 1 << 3;
+	initial ^= i;
+	j = 1 << 12;
+	while (j >>= 1)
+		(initial & j) ? ft_putnbr(1) : ft_putnbr(0);
+	ft_putchar('\n');
+	j = 1 << 12;															// il faut utiliser le & car il transforme
+	while (j >>= 1)															// 0+0=0 1+0=0 0+1=0 mais 1+1=1
+		(initial & compare) & j ? ft_putnbr(1) : ft_putnbr(0);				// donc si rien ne se superpose on obtient 0
+	ft_putchar('\n');														// et si un seul bit se superpose on obtient 1
+	(initial & compare) ? ft_putendl("&: fit") : ft_putendl("&: not fit");	// (penser a l'utiliser a l'envers donc)
+	j = 1 << 12;
+	while (j >>= 1)
+		(initial | compare) & j ? ft_putnbr(1) : ft_putnbr(0);
+	ft_putchar('\n');
+	(initial | compare) ? ft_putendl("|: fit") : ft_putendl("|: not fit");
+	j = 1 << 12;
+	while (j >>= 1)
+		(initial ^ compare) & j ? ft_putnbr(1) : ft_putnbr(0);
+	ft_putchar('\n');
+	(initial ^ compare) ? ft_putendl("^: fit") : ft_putendl("^: not fit");
+}
+
 int		main(int ac, char **av)
 {
-	int	init;
-	int	mask;
+	int i;
+	int j;
 
-	mask = (1 << 4);
-	if (ac == 4)
+	i = 56173;
+	j = 9362;
+	if (ac > 0)
 	{
-		ft_putendl(ft_convertbase(av[1], av[2], av[3]));
-		ft_putnbrendl(init);
-		init |= mask;
-		ft_putnbrendl(init);
+		if (ac > 1)
+			ft_putendl(ft_convertbase(av[1], "0123456789", "01"));
+		print_bits(i);
+		print_bits(j);
+		compare(i, j);
 	}
 	return (0);
 }
+
+/*
+**int		main(int ac, char **av)
+**{
+**	int	init;
+**	int	mask;
+**
+**	mask = (1 << 4);
+**	if (ac == 4)
+**	{
+**		ft_putendl(ft_convertbase(av[1], av[2], av[3]));
+**		ft_putnbrendl(init);
+**		init |= mask;
+**		ft_putnbrendl(init);
+**	}
+**	return (0);
+**}
+*/