Trol Incrementation and ft_atoi

ft_atoi_and_incrementation_trol.c

#include <stdio.h>

int	ft_atoi(char *str)
{
	long long			to_dec = 0;
	int				neg = 1;

	while (!(*str ^ ' ') || (*str >= '\t' && *str <= '\r'))
		str = (char *)-~(unsigned long long)str; // Wtff dude
	while ((!(*str ^ '+') || !(*str ^ '-')))
		if (!(*str++ ^ '-'))
			neg = ~(neg - 1);
	while (*str >= '0' && *str <= '9')
		to_dec = (to_dec << 1) + (to_dec << 3) + (*str++ & 0xF);
	if (to_dec > 0x7FFFFFFF || to_dec > -0x80000000) return (0);
	return (to_dec * neg);
}

int main(int ac, char **av)
{
	if (ac < 2)
		return (1);
	unsigned char	buf[] = "hello";
	char			*ptr = buf;
	unsigned long long	tmp;

	printf("%d\n", ft_atoi(av[1]));
	printf("%s\n", ptr);
	tmp = -~(unsigned long long)ptr;
	ptr = (char *)tmp;
	printf("%s\n", ptr);
	return (0);
}