ft_atol.c File Reference

#include "libft.h"

Include dependency graph for ft_atol.c:

Go to the source code of this file.

Functions
long	ft_atol (const char *nptr)

Function Documentation

ft_atol()

long ft_atol

(

const char *

nptr

)

Definition at line 15 of file ft_atol.c.

{
    int     i;
    int     neg;
    long    res;
 
    i = 0;
    neg = 1;
    res = 0;
    while (nptr[i] == '\t' || nptr[i] == '\v' || nptr[i] == '\n'
        || nptr[i] == '\f' || nptr[i] == '\r' || nptr[i] == ' ')
        i++;
    if (nptr[i] == '-' || nptr[i] == '+')
    {
        if (nptr[i] == '-')
            neg = -neg;
        i++;
    }
    while (nptr[i] >= '0' && nptr[i] <= '9')
        res = res * 10 + (nptr[i++] - 48);
    return (res * neg);
}