cuberite-2a/source/Endianness.h

#pragma once

#ifdef _WIN32
	#include <WinSock.h>
#else
	#include <sys/socket.h>
	#include <netinet/in.h>
#endif

// Changes endianness
inline unsigned long long HostToNetwork8( void* a_Value )
{
	unsigned long long __HostToNetwork8;
	memcpy( &__HostToNetwork8, a_Value, sizeof( __HostToNetwork8 ) );
	__HostToNetwork8 = (( ( (unsigned long long)htonl((u_long)__HostToNetwork8) ) << 32) + htonl(__HostToNetwork8 >> 32));
	return __HostToNetwork8;
}

inline unsigned int HostToNetwork4( void* a_Value )
{
	unsigned int __HostToNetwork4;
	memcpy( &__HostToNetwork4, a_Value, sizeof( __HostToNetwork4 ) );
	__HostToNetwork4 = ntohl( __HostToNetwork4 );
	return __HostToNetwork4;
}

inline double NetworkToHostDouble8( void* a_Value )
{
#define ntohll(x)   ((((unsigned long long)ntohl((u_long)x)) << 32) + ntohl(x >> 32))
	unsigned long long buf = 0;//(*(unsigned long long*)a_Value);
	memcpy( &buf, a_Value, 8 );
	buf = ntohll(buf);
	double x;
	memcpy(&x, &buf, sizeof(double));
	return x;
}

inline long long NetworkToHostLong8( void* a_Value )
{
	unsigned long long buf = *(unsigned long long*)a_Value;
	buf = ntohll(buf);
	return *reinterpret_cast<long long *>(&buf);
}

inline float NetworkToHostFloat4( void* a_Value )
{
	u_long buf = *(u_long*)a_Value;
	buf = ntohl( buf );
	float x = 0;
	memcpy( &x, &buf, sizeof(float) );
	return x;
}