大小端数据转换

来源：互联网发布：javascript全选框实现编辑：程序博客网时间：2024/06/10 13:14

#define NET_USHORT(u16)   ((unsigned short)((((unsigned short)(u16)) >> 8) | (((unsigned short)(u16)) << 8)))
#define NET_ULONG(u32)   ((unsigned long)(NET_USHORT((u32) >> 16) | (NET_USHORT(u32 & 0xFFFF) << 16)))
#define NET_SHORT(i16)   ((short)NET_USHORT(i16))
#define NET_LONG(i32)   ((long)(NET_USHORT((i32) >> 16) | (NET_USHORT(i32 & 0xFFFF) << 16)))

int _tmain(int argc, _TCHAR* argv[])
{
short a;
unsigned short b;
long c;
unsigned long d;

unsigned short n = 0x8765;
printf("n << 8 = 0x%X, n >> 8 = 0x%X/n", (n << 8), (n >> 8));

printf("n << 8 = 0x%X, n >> 8 = 0x%X/n", (((short)n) << 8), (((short)n) >> 8));

a = 12;
a = NET_SHORT(a);
a = NET_SHORT(a);

printf("a = %d/n", a);

b = 0x1234;
b = NET_USHORT(b);
b = NET_USHORT(b);

printf("b = %X/n", b);

c = 22;
c = NET_LONG(c);
c = NET_LONG(c);

printf("c = %d/n", c);

d = 0x12345678;
d = NET_ULONG(d);
d = NET_ULONG(d);

printf("d = %X/n", d);

return 0;
}