From: Lukas Jiriste <ljiriste@student.42prague.com>
Date: Wed, 6 Dec 2023 09:45:45 +0000 (+0100)
Subject: Add long and long long versions of ft_atoi.
X-Git-Url: https://git.ljiriste.work/?a=commitdiff_plain;h=979c7eed8d16d89f0a0241d6124a89ea39f2ad94;p=Libft.git

Add long and long long versions of ft_atoi.

Add the functions ft_atol and ft_atoll to the file ft_atoi.c.
Add prototypes of these functions to libft.h.
---

diff --git a/ft_atoi.c b/ft_atoi.c
index 881b763..3910863 100644
--- a/ft_atoi.c
+++ b/ft_atoi.c
@@ -35,3 +35,51 @@ int	ft_atoi(const char *nptr)
 	}
 	return (sign * res);
 }
+
+long	ft_atol(const char *nptr)
+{
+	long	res;
+	int		sign;
+
+	res = 0;
+	sign = 1;
+	while (ft_isspace(*nptr))
+		++nptr;
+	if ((*nptr == '+' || *nptr == '-'))
+	{
+		if (*nptr == '-')
+			sign *= -1;
+		++nptr;
+	}
+	while (ft_isdigit(*nptr))
+	{
+		res *= 10;
+		res += *nptr - '0';
+		++nptr;
+	}
+	return (sign * res);
+}
+
+long long	ft_atoll(const char *nptr)
+{
+	long long	res;
+	int			sign;
+
+	res = 0;
+	sign = 1;
+	while (ft_isspace(*nptr))
+		++nptr;
+	if ((*nptr == '+' || *nptr == '-'))
+	{
+		if (*nptr == '-')
+			sign *= -1;
+		++nptr;
+	}
+	while (ft_isdigit(*nptr))
+	{
+		res *= 10;
+		res += *nptr - '0';
+		++nptr;
+	}
+	return (sign * res);
+}
diff --git a/libft.h b/libft.h
index ac0e5b2..bc40688 100644
--- a/libft.h
+++ b/libft.h
@@ -50,6 +50,8 @@ int		ft_toupper(int c);
 int		ft_tolower(int c);
 
 int		ft_atoi(const char *nptr);
+long	ft_atol(const char *nptr);
+long long	ft_atoll(const char *nptr);
 
 char	*ft_substr(const char *s, unsigned int start, size_t len);
 char	*ft_strjoin(const char *s1, const char *s2);