diff --git a/Makefile b/Makefile
index 97c5179..3863b5b 100644
--- a/Makefile
+++ b/Makefile
@@ -120,9 +120,11 @@ SRCS	=	ft_memset.c \
 			pf_utils.c \
 			\
 			ft_abs.c \
+			ft_abs_f.c \
 			ft_greater.c \
 			ft_smaller.c \
 			ft_sign.c \
+			ft_sign_f.c \
 			ft_sqrt.c \
 			ft_free_tab.c \
 			\
diff --git a/includes/libft.h b/includes/libft.h
index 7946cd0..83b736d 100644
--- a/includes/libft.h
+++ b/includes/libft.h
@@ -122,9 +122,11 @@ void ft_putnbrendl(int n);
 void ft_putnbrendl_fd(int n, int fd);
 char *ft_concat_free(char *str1, char *str2);
 int ft_abs(int n);
+double ft_abs_f(double n);
 int ft_greater(int a, int b);
 int ft_smaller(int a, int b);
 int ft_sign(int i);
+int ft_sign_f(double i);
 int ft_sqrt(int i);
 void ft_free_tab(char **tab);
 
diff --git a/srcs/ft_abs.c b/srcs/ft_abs.c
index 3cdb51f..c4743a0 100644
--- a/srcs/ft_abs.c
+++ b/srcs/ft_abs.c
@@ -1,6 +1,6 @@
 #include "libft.h"
 
-int		ft_abs(int n)
+int ft_abs(int n)
 {
 	if (n < 0)
 		n *= -1;
diff --git a/srcs/ft_abs_f.c b/srcs/ft_abs_f.c
new file mode 100644
index 0000000..4d0121a
--- /dev/null
+++ b/srcs/ft_abs_f.c
@@ -0,0 +1,8 @@
+#include "libft.h"
+
+double ft_abs_f(double n)
+{
+	if (n < 0)
+		n *= -1;
+	return (n);
+}
diff --git a/srcs/ft_sign.c b/srcs/ft_sign.c
index b665855..31d2e29 100644
--- a/srcs/ft_sign.c
+++ b/srcs/ft_sign.c
@@ -1,6 +1,6 @@
 #include "libft.h"
 
-int		ft_sign(int i)
+int ft_sign(int i)
 {
 	if (i < 0)
 		return (-1);
diff --git a/srcs/ft_sign_f.c b/srcs/ft_sign_f.c
new file mode 100644
index 0000000..141fbf0
--- /dev/null
+++ b/srcs/ft_sign_f.c
@@ -0,0 +1,8 @@
+#include "libft.h"
+
+int ft_sign_f(double i)
+{
+	if (i < 0)
+		return (-1);
+	return (1);
+}