#ifndef _BYTESWAP_H_
#define _BYTESWAP_H_

#define SWAP_2(x) ( (((x) & 0xff) << 8) | ((unsigned short)(x) >> 8) )
#define SWAP_4(x) ( ((x) << 24) | (((x) << 8) & 0x00ff0000) | (((x) >> 8) & 0x0000ff00) | ((x) >> 24) )

inline void SWAP_SHORT(short& x) { (*(unsigned short *)&(x) = SWAP_2(*(unsigned short *)&(x))); }
inline void SWAP_INT(int& x)   { (*(unsigned int *)&(x)   = SWAP_4(*(unsigned int *)&(x))); }
inline void SWAP_FLOAT(float& x) { SWAP_INT((*(int*)&(x))); }
inline void SWAP_DOUBLE(double& x)
{
	double retVal;
	char* p = (char*)&retVal;
	char* i = (char*)&x;
	p[0] = i[7];
	p[1] = i[6];
	p[2] = i[5];
	p[3] = i[4];
	
	p[4] = i[3];
	p[5] = i[2];
	p[6] = i[1];
	p[7] = i[0];
	
	x = retVal;
}

inline void SWAP_SHORT(short* x, long nSize)
{
	for (int i = 0; i < nSize; i++)
		SWAP_SHORT(x[i]);
}

inline void SWAP_INT(int* x, long nSize)
{
	for (int i = 0; i < nSize; i++)
		SWAP_INT(x[i]);
}

inline void SWAP_FLOAT(float* x, long nSize)
{
	for (int i = 0; i < nSize; i++)
		SWAP_FLOAT(x[i]);
}

inline void SWAP_DOUBLE(double* x, long nSize)
{
	for (int i = 0; i < nSize; i++)
		SWAP_DOUBLE(x[i]);
}


#endif // _BYTESWAP_H_