关于大端与小端的判断

uint8_t Is_Little_endian(void)
{
uint16_t i = 1;
return (*(uint8_t *)&i);
}

uint8_t Is_Little_endian(void)
{
union
{
uint16_t  big;
uint8_t   lit;
} check;
check.big = 1;
return check.lit;
}

static union
{
uint8_t a[2];
uint16_t i;
}endian = {1,0};

#define Is_Little_endian() ((uint8_t)endian.i)

int main()
{
if(Is_Little_endian())
printf("It's Little-endian");
return 1;
}