Endian 관련 함수들

int SHORT_little_endian_TO_big_endian(int i)
{
return ((i>>8)&0xff)+((i << 8)&0xff00);
}

// 4-byte number
int INT_little_endian_TO_big_endian(int i)
{
return((i&0xff)<<24)+((i&0xff00)<<8)+((i&0xff0000)>>8)+((i>>24)&0xff);
}

ntohl() //Network to Host byte order (Long)
htonl() //Host to Network byte order (Long)

ntohs() //Network to Host byte order (Short)
htons() //Host to Network byte order (Short)

unsigned int change_endian(unsinged int x)
{
unsigned char *ptr = (unsigned char *)&x;
return (ptr[0] << 24) | (ptr[1] << 16) | (ptr[2] << 8) | ptr[3];
}