将低序字节存储在内存的起始地址,这称为小端字节序。
将高序字节存储在内存的起始地址,这称为大端字节序。
检查大小端字节序的简单代码如下:
int
main(int argc, char **argv)
{
union {
short s;
char c[sizeof(short)];
} un;
un.s = 0x0102;
printf("%s: ", CPU_VENDOR_OS);
if (sizeof(short) == 2) {
if (un.c[0] == 1 && un.c[1] == 2)
printf("big-endian\n");
else if (un.c[0] == 2 && un.c[1] == 1)
printf("little-endian\n");
else
printf("unknown\n");
}
else
printf("sizeof(short) = %d\n", sizeof(short));
exit(0);
}
时间: 2024-08-26 13:14:13