#include <os_endian.h>
#include "os_types.h"

int os_endian_is_little_endian(void){
    union {
        uint32_t    i;
        uint8_t     c;
    } test;

    test.i = 0x12345678;
    return (test.c == 0x78); // 如果取到的是低位字节，则是小端
}