add ft_atof

srcs/ft_atof.c

@@ -0,0 +1,42 @@
+#include <stdio.h>
+#include "libft.h"
+
+double ft_atof(const char *str)
+{
+	double nbr;
+	int i;
+	int negatif;
+	double fraction;
+
+	i = 0;
+	negatif = 1;
+	nbr = 0.0;
+	fraction = 1.0;
+
+	// Skip leading whitespace
+	while ((str[i] == ' ') || (str[i] > 8 && str[i] < 14))
+		i++;
+
+	// Handle optional sign
+	if (str[i] == '-')
+		negatif = -1;
+	if (str[i] == '+' || str[i] == '-')
+		i++;
+
+	// Parse integer part
+	while (str[i] >= '0' && str[i] <= '9')
+		nbr = nbr * 10.0 + (str[i++] - '0');
+
+	// Parse fractional part if '.' is present
+	if (str[i] == '.')
+	{
+		i++;
+		while (str[i] >= '0' && str[i] <= '9')
+		{
+			fraction /= 10.0;
+			nbr += (str[i++] - '0') * fraction;
+		}
+	}
+
+	return (nbr * negatif);
+}

srcs/ft_atoi.c

@@ -12,22 +12,29 @@
 
 #include "libft.h"
 
-int		ft_atoi(const char *str)
+int ft_atoi(const char *str)
 {
-	long		nbr;
-	int			i;
-	int			negatif;
+	long nbr;
+	int i;
+	int negatif;
 
 	i = 0;
 	negatif = 1;
 	nbr = 0;
+
+	// Skip leading whitespace
 	while ((str[i] == ' ') || (str[i] > 8 && str[i] < 14))
 		i++;
+
+	// Handle optional sign
 	if (str[i] == '-')
 		negatif = -1;
 	if (str[i] == '+' || str[i] == '-')
 		i++;
+
+	// parse integer
 	while (str[i] >= '0' && str[i] <= '9')
 		nbr = nbr * 10 + (str[i++] - '0');
+
 	return (nbr * negatif);
 }

srcs/ft_atol.c

@@ -1,22 +1,29 @@
 
 #include "libft.h"
 
-long	ft_atol(const char *str)
+long ft_atol(const char *str)
 {
-	long long	nbr;
-	int			i;
-	int			negatif;
+	long long nbr;
+	int i;
+	int negatif;
 
 	i = 0;
 	negatif = 1;
 	nbr = 0;
+
+	// Skip leading whitespace
 	while ((str[i] == ' ') || (str[i] > 8 && str[i] < 14))
 		i++;
+
+	// Handle optional sign
 	if (str[i] == '-')
 		negatif = -1;
 	if (str[i] == '+' || str[i] == '-')
 		i++;
+
+	// parse integer
 	while (str[i] >= '0' && str[i] <= '9')
 		nbr = nbr * 10 + (str[i++] - '0');
+
 	return (nbr * negatif);
 }