C函数检测CPU架构为Little-Endian或Big-Endian

//返回1说明是Little-Endian,否则为Big-Endian
int CheckCpu(){
    //联合体从低位开始存储
    union w{
        int i;
        char b;
    } u;
    u.i=1;
    return (u.b==1);
}

 

C检测CPU架构为Little-Endian或Big-Endian.