unsigned long long 大小端互转

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netinet/in.h>
#include <arpa/inet.h>

#define ntohll(src) convert(src)
#define htonll(src) convert(src)

inline unsigned long long convert(unsigned long long src)
{
    unsigned long long dst = 0;
    <