blob: 53c0e5ad84f75ff2e23b16c7ca1f2aca64c05e54 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
|
/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_atoi.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: kdx <marvin@42.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2022/07/25 16:53:01 by kdx #+# #+# */
/* Updated: 2022/10/13 22:31:22 by kdx ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
#include <limits.h>
int ft_atoi(const char *nptr)
{
long result;
int sign;
while (*nptr == ' ' || *nptr == '\n' || *nptr == '\t'
|| *nptr == '\r' || *nptr == '\f' || *nptr == '\v')
nptr += 1;
sign = 1;
if (*nptr == '+' || *nptr == '-')
{
if (*nptr == '-')
sign = -sign;
nptr += 1;
}
result = 0;
while (*nptr >= '0' && *nptr <= '9')
{
result = result * 10 + (*nptr - '0') * sign;
nptr += 1;
if (result > INT_MAX)
return (-1);
if (result < INT_MIN)
return (0);
}
return (result);
}
|
