byteorder.h

来自「Zigbee的nesc源码」· C头文件 代码 · 共 29 行

//$Id: byteorder.h,v 1.2 2005/06/14 09:29:24 cssharp Exp $

#ifndef __BYTEORDER
#define __BYTEORDER

inline int is_host_msb()
{
   const uint8_t n[2] = {0,1};
   return ((*(uint16_t*)n) == 1);
}

inline int is_host_lsb()
{
   const uint8_t n[2] = {1,0};
   return ((*(uint16_t*)n) == 1);
}

inline uint16_t toLSB16( uint16_t a )
{
   return is_host_lsb() ? a : ((a<<8)|(a>>8));
}

inline uint16_t fromLSB16( uint16_t a )
{
   return is_host_lsb() ? a : ((a<<8)|(a>>8));
}

#endif