thrieg/ft_malloc
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Thomas Rieg 2025-11-28 19:50:58 +01:00
commit 42653de246
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libft/ft_addr_to_str.c Executable file
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/* ************************************************************************** */
/* */
/* ::: :::::::: */
/* ft_addr_to_str.c :+: :+: :+: */
/* +:+ +:+ +:+ */
/* By: thrieg <thrieg@student.42mulhouse.fr> +#+ +:+ +#+ */
/* +#+#+#+#+#+ +#+ */
/* Created: 2024/10/22 16:54:09 by thrieg #+# #+# */
/* Updated: 2025/02/16 19:02:50 by thrieg ### ########.fr */
/* */
/* ************************************************************************** */
#include "libft.h"
#include <stdint.h>
void ft_convert_to_hexa(char c, char hex_buff[2])
{
hex_buff[1] = c & 0b00001111;
hex_buff[0] = (c >> 4) & 0b00001111;
if (hex_buff[0] <= 9)
hex_buff[0] += '0';
else
hex_buff[0] += 'a' - 10;
if (hex_buff[1] <= 9)
hex_buff[1] += '0';
else
hex_buff[1] += 'a' - 10;
}
//convert the address addr in hexadecimal and returns a standard c string.
//returns NULL if the allocation fails
char *ft_addr_to_strhex(void *addr)
{
char hex_buff[2];
int i;
int j;
uintptr_t address;
char *ret;
ret = malloc((sizeof(char) * sizeof(uintptr_t) * 2) + 1);
if (!ret)
return (NULL);
address = (uintptr_t)addr;
i = (sizeof(uintptr_t) * 8) - 8;
j = 0;
while (i >= 0)
{
ft_convert_to_hexa(((address >> i) & 0xFF), hex_buff);
ret[j++] = hex_buff[0];
ret[j++] = hex_buff[1];
i -= 8;
}
ret[j] = '\0';
return (ret);
}