#include <stddef.h>
#include <stdint.h>

int ft_memcmp(const void *s1, const void *s2, size_t n)
{
    const unsigned char *p1 = s1, *p2 = s2;

    while (n >= sizeof(size_t)) {
        size_t w1 = *(const size_t *)p1;
        size_t w2 = *(const size_t *)p2;
        if (w1 != w2) {
            for (size_t i = 0; i < sizeof(size_t); ++i) {
                if (p1[i] != p2[i])
                    return (p1[i] - p2[i]);
            }
        }
        p1 += sizeof(size_t);
        p2 += sizeof(size_t);
        n  -= sizeof(size_t);
    }
    while (n--) {
        if (*p1 != *p2)
            return (*p1 - *p2);
        ++p1;
        ++p2;
    }
    return (0);
}